New Circuits Page 192
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The 100k potentiometers set the voltage level reaching the Op Amps. A dual ganged 100K-Ohm audio-taper potentiometer should be used over a linear taper or potentiometer. In some cases the component may be called a ganged stereo taper. The schematic does not....
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I am using BQ24020 charger IC to charge 120mAh Li-ion battery. I set the charge current to around 100mA. Attached is the circuit schematic. The problem I am facing is STAT1 and STAT2 signals indicate that battery is fully charged even though battery charge....
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This is schematic of a synthesized PLL for the Low Power FM transmitter. By the way, you also can use it with other circuits, just pay attention to recalculate the loop filter response and components, VCO tank circuit, and the correct thumbswitch programming....
-
Close to human perception and stable color sensing is an ubiquitous problem found in numerous disciplinces, e. g. , in machine vision for classification and recognition or in general intelligent systems, for instance for intelligent illumination systems in....
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-
-
-
To complement the 60 Watt MosFet Audio Amplifier a High Quality Preamplifier design was necessary. A discrete components topology, using and - 24V supply rails was chosen, keeping the transistor count to the minimum, but still allowing low noise, very low....
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-
-
-
Low Ripple Regulated Power Supply Circuit Diagram This circuit may be used where a high current is required with a low ripple voltage (such as in a high powered class AB amplifier when high quality reproduction is necessary ). PARTS LISTR12....
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The basic bipolar transistor (BJT) version of an astable multivibrator as shown in Fig. 4. 1. 1 has two outputs that repeatedly change state at a rate determined by the time constants of its feedback network. Although largely superseded by its equivalent op....
-
To generate and maintain the EP, perilymphatic K+ enters fibrocytes (F) via Na+/K+-ATPase and Na-K-Cl cotransporter. Gap junction networks connect fibrocytes to strial basal (SB) and intermediate (SI) cells, allowing ions to enter the intrastrial space via....
-
In order to understand how the following circuits are connected to each other you have to read the concept chapter first. Of course it is up to you to take just one or two of these circuits for your own developments. Lets start with the 6 MHz oscillator. The....
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Hey guys, I am new to the forum. I hope this is the right section. Sorry if I ask some dumb questions, I am new to circuit design. This is for my....
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-
-
-
Circuit bellow shows about LM741 IC for Light Dark Sensor Circuit diagram. This circuit have a many features, among others: 1 Watt LED spotlight, advantageous and able in a advanced ambit of renewable activity projects from automated lighting to aegis....
-
-
This regulator uses the drop across R3 to sense current draw, turning on Q2, removing drive from Q1, and lowering the output voltage. Limiting occurs when Q2 has 0. 65 V across the base-emitter junction. This circuit has foldback characteristics as seen from....
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Start to build the circuit as pictured in the schematic. To see the schematic larger, click the little i in the upper right-hand corner of the image....
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Based on a National Semiconductor application note, this circuit uses an LM317 3-terminal regulator (REG1), chosen because of its built-in over-current and over-temperature protection. Its output is boosted up to just over 5A by the MJ2955 transistor (Q1).....
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The thermistor used has a resistance of 15k at 25 degrees and 45k at 0 degrees celsius. A suitable bead type thermistor is found in the Maplin catalogue. The 100k pot allows this circuit to trigger over a wide range of temperatures. A slight amount of....
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The function for automatically control the speed of your fan according to the temperature.? Component: BT136 Triac, Capacitor, Resistor, Relay, Fan Motor, ...
-
RF is just way too cool not to use in your designs. But if you`re a newbie like me it is difficult to successfully build solid RF transmitters and receiver....
-
This circuit is design for provide automatic current limiting up to 8. 4A. Unlike current limiter that uses only a resistor, this current limiting circuit doesn`t drop the voltage, or at least keep the voltage drop at minimum, until a certain current amount....
-
An increasing number of appliances draw a very small current from the power supply. If you need to design a mains powered device, you could generally choose between a linear and a switch-mode power supply. However, what if the appliance`s total power....
-
Check your work for possible dry joints, bridges across adjacent tracks or soldering flux residues that usually cause problems. Check again all the external connections to and from the circuit to see if there is a mistake there. - Make sure that all the....
-
This is a circuit where an alarm will go off once the circuit is tilted. Once the circuit is tilted beyond a certain degree, a loud buzzer will go off, alerting us to this. Many different types of electronics have tip-over protection circuits. One such....
-
This stereo balance indicator circuit diagram is designed using few common external components. The schematic circuit is very simple to build and will provide an visual indication with LEDs for left, right and center balance. Outputs from each channel are....
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The proximity detector senses the passing of the PC board pieces as the wheel rotates, providing an output signal, which has a clean transition between high and low voltage levels, and is ideal for triggering counting or processing circuits. Next is the....
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-
-
-
Typical F71T12 100 W bi-pin lamp used in tanning beds. Note the (Hg) symbol indicating it contains mercury. In the US this symbol is now required on all fluorescent lamps that contain mercury. [1] Inside the lamp end of a preheat bi-pin lamp. In this lamp....
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The power supply is pretty mundane. The 110VAC comes in on connector N17 and is hooked in series with a power switch SW1, a fuse F1, and the primary coil of transformer T1. The secondary coil of T1 produces 24VAC at 12 Amps and is routed through the full....
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Model SimpleSolenoid "Simple network model of a lifting magnet with planar armature end face" parameter SI. Resistance R = 10 "Armature coil resistance"; parameter Real N = 957 "Number of turns"; //yoke parameter SI. Radius r_yokeOut = 15e-3 "Outer yoke....
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The following schematic has been taken from buildcircuit. com. The following circuit can work as a music generator, Infrared transmitter and LED blinker depending upon the values of R1, R2 and C1. Making a minor modification in the previous circuit makes it....
-
Oatley Electronics in New South Wales Australia makes a few kits based around the Raytheon JAN 6418 sub-miniature valve (tube). I decided to try out the $27AU K272A Stereo Tube Preamplifier - Headphone Driver kit. [Note - the K272 has been replaced with the....
-
The amp has been designed to be an ideal upgrade for builders wishing to step up from Gainclones. This amp will kick out the power where Gainclones fall over, yet still maintain a sweet sound. The use of n-channel MOSFETs in the output makes the amp easy to....
-
When using an analog meter to set the output of a power supply used for testing 12-volt equipment, an expanded voltmeter scale has a decided advantage and accuracy over a linear scale. Figure 1 shows the original meter scale and the expanded scale used in....
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The circuit gates the output of a continuously operating 32KHz crystal oscillator to the input of a C-MOS buffer when clock pulses are needed. The technique gets around the problem of a slow starting crystal oscillator by keeping the oscillator going and....
-
This is a very straightforward circuit. The first stage acts as a crystal receiver. Use a germanium detector diode (like 1N34, but AA119 is much more common in Europe), a silicon one won`t do. The frequency is determined by L and C. For the FM band and VHF,....
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I have a portable 50W light that is run off a 12V 7Ah battery. In some cases the light is too bright so i was wondering what parts i would need to mak....
-
Some months ago a surprise package turned up in my mailbox. Ananonymous donor had sent me threewonderful, old germanium transistors. The2N170 and a pair of 2N107`s (all date-coded December 1956) werestill in theiroriginal plastic tube packaging. Athin....
-
The Mini AV Test Box circuit is as simple and straight forward as I could design. It has three main sections that I split up in the schematic. The main devices used in the circuit are the 7805 +5v Regulator, 16F84A Microcontroller and 555 Timer. This is a....
-
In this small switching power supply, a Schmitt trigger oscillator is used to drive a switching transistor that supplies current to a small inductor. Energy is stored in the inductor while the transistor is on, and released into the load circuit when the....
-
This is a FM transmitter circuit diagram. This circuit using 2N2222 Transistor so can be operated with 3V, and also can send signals up to 50m ....
-
The drop-down category menus above may help you find what you are looking for. Be sure to also look under the Bodo`s Power by Topic sub-categories. They include topics similar to our general categories. If the above suggestions were of no help, you can....
-
The PCD3360 is a CMOS integrated circuit, designed to replace the electro-mechanical bell in telephone sets. It meets most postal requirements, with selectivity of output Tone sequences and input ringer frequencies. Output signals for a loudspeaker or for a....
-
Aubrey Scoon`s early 1940`s Beam Rays Replica Rife Machine, Aubrey Scoon s 1940 s Beam Rays Clinical replica Rife Machine was originally mistaken for a genuine 1938-1939 Beam Rays instrument built by Philip Hoyland and the Beam Rays Corporation....
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-
If you have a digital voltmeter, or any voltmeter with millivolt resolution and high input impedance, then you can use this temperature-to-voltage adapter...
-
The circuit of active shortwave antenna presented here boosts weak shortwave signals so that these can be heard with enhanced clarity over a shortwave receiver. Further, the receiver doesn`t require any physical connection as its placement in the vicinity....
-
-
This is flashing lamp circuit. This circuit operate with 6V power supply. You can fix this circuit for your bick or for your car. Here I have used common transsistor 2N3904...
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-
Sometimes it is desired to power a circuit from a battery where the required supply voltage lies within the discharge curve of the battery. If the battery is new, the circuit receives a higher voltage than required, whereas if the battery is towards the end....
-
Here is the circuit diagram of a simple AM transmitter circuit that can transmit your audios to your backyard. This circuit is designed with limited power output to match the FCC regulations and still produces enough amplitude modulation of voice in the....
-
Here is a schematic of a simple water or liquid level sensor relay switch circuit, which can be used to switch on or off electronic appliances at the desired level of water. The circuit is ideal for automatically switch off the water pump when your water....
-
A 4-bit adder which adds two four bit binary numbers with a Carry in line. The diagram above show the logic gate schematic of a 4-bit adder. A full adder take in two number and a carry in line, while a half adder does not allow a carry-in bit. Although both....
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Originally Posted by CDRIVE Thanks for clarifying that. Since you have a dual (+-) supply a SPDT relay will suffice. Do you want a solid state....
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Using this circuit, audio musical notes can be generated and heard up to a distance of 10 metres. The circuit can be divided into two parts: IR music tran....
-
Here is the circuit diagram of a simple stepper motor controller using only elementary parts. The driver circuit uses, four transistor (SL100) to drive the motor windings, two NOT gates and one XOR gate to decode the two bit control logic to drive the four....
-
-
This is one complete inverter project which features automatic mains switching, automatic charging when mains is present, and automatically starts inverter when mains is off. Sir, I want to build solar inverter for driving A. C. load of 200watt for 5 hours.....
-
Even though today`s electrical appliances are increasingly often self-powered, especially the portable ones you carry around when camping or holidaying in summer, you do still sometimes need a source of 230 V AC - and while we`re about it, why not at a....
-
Converser of temperature tension. To be used with a digital multimeter with reach from -40 °C to 110 °C. With checker of the state of it laughed and a without any adjustment, thanks to LM35! The ice is founded the 0 °C and the point of ebullition of the....
-
-
RTD sensors are measured with a precision 24-bit A/D (analog to digital converter) with built-in programmable gain amplifier. Connections for 2-wire RTDs, 3-wire RTDs, and 4-wire RTDs are shown. Connecting and measuring RTDs with amplifiers and data....
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-
The 12F629/675 PICs are small 8 pin DIP devices that are ideal for our applications. They include and internal oscillator, a comparator, an analog/digital converter and timers. The Microchip PICkit1 is an ideal USB programmer. PicBasic Pro (PBP) is an easy....
-
-
With the connections made in this order on the connector it will not matter if the connector is placed the wrong way round as GND and VCC are then applied to clock and data. If VCC and GND had been at opposite ends of the connector then there would be a....
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circuit diagram of audio distortion meter has been described here. Audio distortion meter is used to measure Total Harmonic Distortion...
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Doing the caller id with the pic 16f628A. My programming and ic are working very well but my mt8870 decoder is not working. i need some help here. i stay in Malaysia please help if anyone got any idea..
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The circuit below is configured as a comparator. A fixed reference voltage at the non inverting input is provided by R1 and R2. The inverting input voltage is....
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You can get booster for fuel pumps to increase their rating, but is it possible to do anything to the wireing of an external pump to get it to flow LESS fuel Reason I ask is I am helping my brother out with an engine swap (admittidly, its not a rotary, or an....
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This circuit is average reading use rms calibrated AC voltmeter. Deletion of C2 removes the averaging function and provides a precision full-wave rectifier, and deletion of C1 provides an absolute value generator. Circuit operation may be understood by....
-
The circuit used was basically for audio mixing, it had an input from the triangular wave generator and the noise generator. And it is passsed through the audio mixer to form the wave...
-
The modification I`ve made is based on Steve Chambers SC1 modification and the further improvement by Phil Davis, but does not use the additional parallel port connection. I consider all differences from the original SC1 modification and Phil`s improvement....
-
Most thefts happen after midnight hours when people enter the second phase of sleep called ˜paradoxical sleep. Here is an energy-saving circuit that causes the thieves to abort the theft attempt by lighting up the possible sites of intrusion (such as kitchen....
-
PIC16C57-RCT is communication single-chip microcomputer integrated circuit, which is widely used in Qiao Xing series of IC card management telephone. 1. Function descriptionPIC16C57-RC integrated circuit includes pulse and dual-tone dialing circuit, memory....
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While traveling, charging of the mobile phone, cellphone battery is a big problem as power supply source is not generally accessible. Battery will go flat....
-
-
The circuit was designed to provide an adjustment with a power supply that is symmetrically designed while providing a voltage range of 1.25V to 30V at 1A....
-
This project combines several features in one compact unit. The fundamental driver consists of a NE 555 square wave generator. During development, consideration and a certain amount of experimentation was given to the construction of a square wave unit using....
-
The Spartan-3 board has external 5v Relay interfacing, indicated as in Figure. ULN2803 is used as a driver for FPGA I/O lines, drivers output connected to relay modules. PTB connector provided for external power supply if needed...
-
This is a class AB transistor power amplifier. It is a simple amplifier to build, uses standard parts and is stable and reliable. The entire circuit utilizes commonly available components and may be simply built over a general-purpose board. But this....
-
The schematic diagram below shows a simple trivial low-cost 12 volt DC 50W off-line SMPS switching power supply circuit. It can be used for DIY home projects or to learn operation of flyback converters. This PSU can work over a universal input AC line range....
-
The different strengths between the PMOS and NMOS transistors can be observed through a simple test of ramping up the input voltage an observing the point at which the output voltage will switch from 5V to 0V. To perform this test, click on the cell named....
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The latest circuit diagram of the AD2496 is shown here. All modifacations I intended and described in the article about the prototype have been implemented. Additionally I introduced two current compensated chokes for higher EMV immunity. Not that I....
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This manual will show you how to use each of the components in the kit, and give you software Sketch examples for each one. Then you can combine some components to make examples of Automatic Systems such as a lighting controller. The Arduino "IDE" software....
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Components like resistors R1 and R2, capacitors C1, C2, and C3, diodes D1 and D2, and zener ZD1 are used to develop a fairly steady 5V DC supply voltage that provides the required current to operate the multivibrator circuit and trigger triac BT136 via LED1.....
The 100k potentiometers set the voltage level reaching the Op Amps. A dual ganged 100K-Ohm audio-taper potentiometer should be used over a linear taper or potentiometer. In some cases the component may be called a ganged stereo taper. The schematic does not....
I am using BQ24020 charger IC to charge 120mAh Li-ion battery. I set the charge current to around 100mA. Attached is the circuit schematic. The problem I am facing is STAT1 and STAT2 signals indicate that battery is fully charged even though battery charge....
This is schematic of a synthesized PLL for the Low Power FM transmitter. By the way, you also can use it with other circuits, just pay attention to recalculate the loop filter response and components, VCO tank circuit, and the correct thumbswitch programming....
Close to human perception and stable color sensing is an ubiquitous problem found in numerous disciplinces, e. g. , in machine vision for classification and recognition or in general intelligent systems, for instance for intelligent illumination systems in....
To complement the 60 Watt MosFet Audio Amplifier a High Quality Preamplifier design was necessary. A discrete components topology, using and - 24V supply rails was chosen, keeping the transistor count to the minimum, but still allowing low noise, very low....
Low Ripple Regulated Power Supply Circuit Diagram This circuit may be used where a high current is required with a low ripple voltage (such as in a high powered class AB amplifier when high quality reproduction is necessary ). PARTS LISTR12....
The basic bipolar transistor (BJT) version of an astable multivibrator as shown in Fig. 4. 1. 1 has two outputs that repeatedly change state at a rate determined by the time constants of its feedback network. Although largely superseded by its equivalent op....
To generate and maintain the EP, perilymphatic K+ enters fibrocytes (F) via Na+/K+-ATPase and Na-K-Cl cotransporter. Gap junction networks connect fibrocytes to strial basal (SB) and intermediate (SI) cells, allowing ions to enter the intrastrial space via....
In order to understand how the following circuits are connected to each other you have to read the concept chapter first. Of course it is up to you to take just one or two of these circuits for your own developments. Lets start with the 6 MHz oscillator. The....
Hey guys, I am new to the forum. I hope this is the right section. Sorry if I ask some dumb questions, I am new to circuit design. This is for my....
Circuit bellow shows about LM741 IC for Light Dark Sensor Circuit diagram. This circuit have a many features, among others: 1 Watt LED spotlight, advantageous and able in a advanced ambit of renewable activity projects from automated lighting to aegis....
This regulator uses the drop across R3 to sense current draw, turning on Q2, removing drive from Q1, and lowering the output voltage. Limiting occurs when Q2 has 0. 65 V across the base-emitter junction. This circuit has foldback characteristics as seen from....
Start to build the circuit as pictured in the schematic. To see the schematic larger, click the little i in the upper right-hand corner of the image....
Based on a National Semiconductor application note, this circuit uses an LM317 3-terminal regulator (REG1), chosen because of its built-in over-current and over-temperature protection. Its output is boosted up to just over 5A by the MJ2955 transistor (Q1).....
The thermistor used has a resistance of 15k at 25 degrees and 45k at 0 degrees celsius. A suitable bead type thermistor is found in the Maplin catalogue. The 100k pot allows this circuit to trigger over a wide range of temperatures. A slight amount of....
The function for automatically control the speed of your fan according to the temperature.? Component: BT136 Triac, Capacitor, Resistor, Relay, Fan Motor, ...
RF is just way too cool not to use in your designs. But if you`re a newbie like me it is difficult to successfully build solid RF transmitters and receiver....
This circuit is design for provide automatic current limiting up to 8. 4A. Unlike current limiter that uses only a resistor, this current limiting circuit doesn`t drop the voltage, or at least keep the voltage drop at minimum, until a certain current amount....
An increasing number of appliances draw a very small current from the power supply. If you need to design a mains powered device, you could generally choose between a linear and a switch-mode power supply. However, what if the appliance`s total power....
Check your work for possible dry joints, bridges across adjacent tracks or soldering flux residues that usually cause problems. Check again all the external connections to and from the circuit to see if there is a mistake there. - Make sure that all the....
This is a circuit where an alarm will go off once the circuit is tilted. Once the circuit is tilted beyond a certain degree, a loud buzzer will go off, alerting us to this. Many different types of electronics have tip-over protection circuits. One such....
This stereo balance indicator circuit diagram is designed using few common external components. The schematic circuit is very simple to build and will provide an visual indication with LEDs for left, right and center balance. Outputs from each channel are....
The proximity detector senses the passing of the PC board pieces as the wheel rotates, providing an output signal, which has a clean transition between high and low voltage levels, and is ideal for triggering counting or processing circuits. Next is the....
Typical F71T12 100 W bi-pin lamp used in tanning beds. Note the (Hg) symbol indicating it contains mercury. In the US this symbol is now required on all fluorescent lamps that contain mercury. [1] Inside the lamp end of a preheat bi-pin lamp. In this lamp....
The power supply is pretty mundane. The 110VAC comes in on connector N17 and is hooked in series with a power switch SW1, a fuse F1, and the primary coil of transformer T1. The secondary coil of T1 produces 24VAC at 12 Amps and is routed through the full....
Model SimpleSolenoid "Simple network model of a lifting magnet with planar armature end face" parameter SI. Resistance R = 10 "Armature coil resistance"; parameter Real N = 957 "Number of turns"; //yoke parameter SI. Radius r_yokeOut = 15e-3 "Outer yoke....
The following schematic has been taken from buildcircuit. com. The following circuit can work as a music generator, Infrared transmitter and LED blinker depending upon the values of R1, R2 and C1. Making a minor modification in the previous circuit makes it....
Oatley Electronics in New South Wales Australia makes a few kits based around the Raytheon JAN 6418 sub-miniature valve (tube). I decided to try out the $27AU K272A Stereo Tube Preamplifier - Headphone Driver kit. [Note - the K272 has been replaced with the....
The amp has been designed to be an ideal upgrade for builders wishing to step up from Gainclones. This amp will kick out the power where Gainclones fall over, yet still maintain a sweet sound. The use of n-channel MOSFETs in the output makes the amp easy to....
When using an analog meter to set the output of a power supply used for testing 12-volt equipment, an expanded voltmeter scale has a decided advantage and accuracy over a linear scale. Figure 1 shows the original meter scale and the expanded scale used in....
The circuit gates the output of a continuously operating 32KHz crystal oscillator to the input of a C-MOS buffer when clock pulses are needed. The technique gets around the problem of a slow starting crystal oscillator by keeping the oscillator going and....
This is a very straightforward circuit. The first stage acts as a crystal receiver. Use a germanium detector diode (like 1N34, but AA119 is much more common in Europe), a silicon one won`t do. The frequency is determined by L and C. For the FM band and VHF,....
I have a portable 50W light that is run off a 12V 7Ah battery. In some cases the light is too bright so i was wondering what parts i would need to mak....
Some months ago a surprise package turned up in my mailbox. Ananonymous donor had sent me threewonderful, old germanium transistors. The2N170 and a pair of 2N107`s (all date-coded December 1956) werestill in theiroriginal plastic tube packaging. Athin....
The Mini AV Test Box circuit is as simple and straight forward as I could design. It has three main sections that I split up in the schematic. The main devices used in the circuit are the 7805 +5v Regulator, 16F84A Microcontroller and 555 Timer. This is a....
In this small switching power supply, a Schmitt trigger oscillator is used to drive a switching transistor that supplies current to a small inductor. Energy is stored in the inductor while the transistor is on, and released into the load circuit when the....
This is a FM transmitter circuit diagram. This circuit using 2N2222 Transistor so can be operated with 3V, and also can send signals up to 50m ....
The drop-down category menus above may help you find what you are looking for. Be sure to also look under the Bodo`s Power by Topic sub-categories. They include topics similar to our general categories. If the above suggestions were of no help, you can....
The PCD3360 is a CMOS integrated circuit, designed to replace the electro-mechanical bell in telephone sets. It meets most postal requirements, with selectivity of output Tone sequences and input ringer frequencies. Output signals for a loudspeaker or for a....
Aubrey Scoon`s early 1940`s Beam Rays Replica Rife Machine, Aubrey Scoon s 1940 s Beam Rays Clinical replica Rife Machine was originally mistaken for a genuine 1938-1939 Beam Rays instrument built by Philip Hoyland and the Beam Rays Corporation....
If you have a digital voltmeter, or any voltmeter with millivolt resolution and high input impedance, then you can use this temperature-to-voltage adapter...
The circuit of active shortwave antenna presented here boosts weak shortwave signals so that these can be heard with enhanced clarity over a shortwave receiver. Further, the receiver doesn`t require any physical connection as its placement in the vicinity....
This is flashing lamp circuit. This circuit operate with 6V power supply. You can fix this circuit for your bick or for your car. Here I have used common transsistor 2N3904...
Sometimes it is desired to power a circuit from a battery where the required supply voltage lies within the discharge curve of the battery. If the battery is new, the circuit receives a higher voltage than required, whereas if the battery is towards the end....
Here is the circuit diagram of a simple AM transmitter circuit that can transmit your audios to your backyard. This circuit is designed with limited power output to match the FCC regulations and still produces enough amplitude modulation of voice in the....
Here is a schematic of a simple water or liquid level sensor relay switch circuit, which can be used to switch on or off electronic appliances at the desired level of water. The circuit is ideal for automatically switch off the water pump when your water....
A 4-bit adder which adds two four bit binary numbers with a Carry in line. The diagram above show the logic gate schematic of a 4-bit adder. A full adder take in two number and a carry in line, while a half adder does not allow a carry-in bit. Although both....
Originally Posted by CDRIVE Thanks for clarifying that. Since you have a dual (+-) supply a SPDT relay will suffice. Do you want a solid state....
Using this circuit, audio musical notes can be generated and heard up to a distance of 10 metres. The circuit can be divided into two parts: IR music tran....
Here is the circuit diagram of a simple stepper motor controller using only elementary parts. The driver circuit uses, four transistor (SL100) to drive the motor windings, two NOT gates and one XOR gate to decode the two bit control logic to drive the four....
This is one complete inverter project which features automatic mains switching, automatic charging when mains is present, and automatically starts inverter when mains is off. Sir, I want to build solar inverter for driving A. C. load of 200watt for 5 hours.....
Even though today`s electrical appliances are increasingly often self-powered, especially the portable ones you carry around when camping or holidaying in summer, you do still sometimes need a source of 230 V AC - and while we`re about it, why not at a....
Converser of temperature tension. To be used with a digital multimeter with reach from -40 °C to 110 °C. With checker of the state of it laughed and a without any adjustment, thanks to LM35! The ice is founded the 0 °C and the point of ebullition of the....
RTD sensors are measured with a precision 24-bit A/D (analog to digital converter) with built-in programmable gain amplifier. Connections for 2-wire RTDs, 3-wire RTDs, and 4-wire RTDs are shown. Connecting and measuring RTDs with amplifiers and data....
The 12F629/675 PICs are small 8 pin DIP devices that are ideal for our applications. They include and internal oscillator, a comparator, an analog/digital converter and timers. The Microchip PICkit1 is an ideal USB programmer. PicBasic Pro (PBP) is an easy....
With the connections made in this order on the connector it will not matter if the connector is placed the wrong way round as GND and VCC are then applied to clock and data. If VCC and GND had been at opposite ends of the connector then there would be a....
circuit diagram of audio distortion meter has been described here. Audio distortion meter is used to measure Total Harmonic Distortion...
Doing the caller id with the pic 16f628A. My programming and ic are working very well but my mt8870 decoder is not working. i need some help here. i stay in Malaysia please help if anyone got any idea..
The circuit below is configured as a comparator. A fixed reference voltage at the non inverting input is provided by R1 and R2. The inverting input voltage is....
This circuit is average reading use rms calibrated AC voltmeter. Deletion of C2 removes the averaging function and provides a precision full-wave rectifier, and deletion of C1 provides an absolute value generator. Circuit operation may be understood by....
The circuit used was basically for audio mixing, it had an input from the triangular wave generator and the noise generator. And it is passsed through the audio mixer to form the wave...
The modification I`ve made is based on Steve Chambers SC1 modification and the further improvement by Phil Davis, but does not use the additional parallel port connection. I consider all differences from the original SC1 modification and Phil`s improvement....
Most thefts happen after midnight hours when people enter the second phase of sleep called ˜paradoxical sleep. Here is an energy-saving circuit that causes the thieves to abort the theft attempt by lighting up the possible sites of intrusion (such as kitchen....
PIC16C57-RCT is communication single-chip microcomputer integrated circuit, which is widely used in Qiao Xing series of IC card management telephone. 1. Function descriptionPIC16C57-RC integrated circuit includes pulse and dual-tone dialing circuit, memory....
While traveling, charging of the mobile phone, cellphone battery is a big problem as power supply source is not generally accessible. Battery will go flat....
The circuit was designed to provide an adjustment with a power supply that is symmetrically designed while providing a voltage range of 1.25V to 30V at 1A....
This project combines several features in one compact unit. The fundamental driver consists of a NE 555 square wave generator. During development, consideration and a certain amount of experimentation was given to the construction of a square wave unit using....
The Spartan-3 board has external 5v Relay interfacing, indicated as in Figure. ULN2803 is used as a driver for FPGA I/O lines, drivers output connected to relay modules. PTB connector provided for external power supply if needed...
This is a class AB transistor power amplifier. It is a simple amplifier to build, uses standard parts and is stable and reliable. The entire circuit utilizes commonly available components and may be simply built over a general-purpose board. But this....
The schematic diagram below shows a simple trivial low-cost 12 volt DC 50W off-line SMPS switching power supply circuit. It can be used for DIY home projects or to learn operation of flyback converters. This PSU can work over a universal input AC line range....
The different strengths between the PMOS and NMOS transistors can be observed through a simple test of ramping up the input voltage an observing the point at which the output voltage will switch from 5V to 0V. To perform this test, click on the cell named....
The latest circuit diagram of the AD2496 is shown here. All modifacations I intended and described in the article about the prototype have been implemented. Additionally I introduced two current compensated chokes for higher EMV immunity. Not that I....
This manual will show you how to use each of the components in the kit, and give you software Sketch examples for each one. Then you can combine some components to make examples of Automatic Systems such as a lighting controller. The Arduino "IDE" software....
Components like resistors R1 and R2, capacitors C1, C2, and C3, diodes D1 and D2, and zener ZD1 are used to develop a fairly steady 5V DC supply voltage that provides the required current to operate the multivibrator circuit and trigger triac BT136 via LED1.....
