New Circuits Page 11
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Below is a block diagram of a modern automated systems incorporate closed-loop feedback for motion control. They typically include a servo system that consist...
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The circuit is use to regulation dual power supply that provides +12V and -12V from the AC mains. A power supply like this is a very essential tool on the work bench of an electronic hobbyist. This is the figure of the schematic of the circuit. This circuit....
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This is the schematic diagram of 15W inverter circuit. The circuit is based PNP power transistor such us TIP32 and other similar transistors. This inverter is producing square wave, there may be some noticeable hum on audio units which powered using this....
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This watt-meter circuit has measurement range up to 1-KW. This circuit can give the complete (X)(Y) function although uses only one transistor. Actually, this circuit is used for 117 Vac ±50 Vac operation. For lower or lower voltage, this circuit can be....
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This circuit shows about 4017 IC For Flip-Flop Timer Circuit DIagram. Features: Push-button S1 will discharge capacitor C1 through R2. Component: ....
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This circuit optimises the operation of a solar hot water system. When the water in the solar collector is hotter than the storage tank, the pump runs. The circuit comprises two LM335Z temperature sensors, a comparator and Mosfet. Sensor 1 connects to the....
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As found in SLAA458, the revised pulseoximeter application, I`ve attached an image of the USB schematic that is used to output collected data. I just had a few questions about this schematic. 1) What do J3 and J6 correspond to I can see the corresponding....
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In the circuit, a quad voltage comparator (LM339) is used as a simple bar graph meter to indicate the charge condition of a 12 volt, lead acid battery. A 5 volt reference voltage is connected to each of the (+) inputs of the four comparators and the (-)....
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What that flip-flop does, but mostly why those two NAND gates aren`t just inverters. and why the one on the bottom (and the inverter next to it) are even there. You should wait with accepting the answer and allow others to have a look and write up their....
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An LCD basically consists of two glass plates with some liquid crystal material between them. The LCD has an electrically controlled light polarising liqui....
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Wireless FM Transmitter. The site has some explanation on how the circuit works, however I`m not sure about a few things, including the electret mic & how the frequency modulation takes place. The electret microphone has a current of 200uA which changes by....
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How to connect up some lights so that when the phone rings, they flash. This is very useful in a situation were there is lots of noise and it is impossable to hear the phone, such as a workshop. Here is such a device. The ring detect part of this circuit....
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Line Follower Robot Project Using 8051 with circuit diagram is explained in this abstract. Download line follower or chaser robot full project report..
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As you see in the circuit above the four pins "Controller pin 1", 2, 3 and 4 will control the motion and direction of the stepper motor according to the step sequece programmed in the controller. As already discussed in case of L293D, Here in this circuit....
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The important part of the circuit is formed of the Colpitts type oscillator. C3, C4, C5, C6, CD1-CD2 and L1 determines the frequency. BF982 and dual gate MOSFET are active parts in the oscillator. When the input impedance of the MOSFET gate inputs are high,....
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There are systems in which it is imperative that the supply voltage of, say, a motor, always has the correct polarity. It is, of course, possible to use a bridge rectifier for this, but if large currents are involved, this is not always possible. This may be....
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There are many circuits for low voltage regulators. For higher voltages, such as supplies for valve circuits, the situation is different. That s why we de....
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A very simple dimmer circuit with only the essentials. (In this circuit, the values are given for a BT138 at 220V AC, for 115V AC you may have to experiment with the values. ) R1 can vary from one triac to another, put a 220K © trimmer in its place and....
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Here is the circuit diagram of Two Flashing LED`s for different applications (such as model construction), and recreational. Having adjustable flashing speed with two potentiometers. It is the collection of a few active and passive components. This circuit....
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This IR remote extender can increase the range of most simple IR remotes (those operating on a 40KHz modulation) a significant distance. In use, the remote is pointed toward the detector on the circuit, and a button is pressed. The Sharp IR detector then....
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The ADRF6702 TxMod is an IQ Modulator with integrated PLL and VCO The PLL Synthesizer uses a Fractional-N PLL to generate a 2*FLO input to the I-Q Modulator The PLL reference input is supported from 12MHz to 160MHz. The phase detector output controls a....
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VU Meter Driver PCB Completed Board Stereo for Two VU Meters Audio Amplifier. VU Meter Driver PCB Completed TA7318P Board Stereo for Two VU Meters Features : Specifications:Power voltage: AC 20V to AC 26V(not more than 26V)size : 52 x 67 x 32mmIt can connect....
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Hello all, Recently I acquired some samples of IR LED`s, and a matching IR Phototransistor. I was bored, and decided to make something with it!....
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The ISL8107 is a single phase, non-synchronous buck controller with an integrated high-side MOSFET driver. The controller operates from 9V to 75V input voltage range. The internal 1. 192V reference voltage has a tolerance of ±1% over the industrial....
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The APX9132 integrated circuit, is an ultra-sensitive, pole independent Hall-effect Switch with a latched digital output. A 2. 5 volt to 3. 5 volt operation and a unique clock- ing scheme reduce the average operating power requirements, either a north or....
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Motor Bike Headlight Controller Circuit Circuit This circuit automatically turns a motor cycle`s headlight on and off, independently of both the light and ignition switches, provided the battery is fully charged. The first stage....
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This is a PIN diode based RF signal attenuator circuit operates with 1MHz 500MHz input. PIN diodes are one of the most common parts used in RF applicati....
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hello, i am doing a practical on lm 741. i want to make it to use it as an wein bridge oscillator.the value of c1=c2=0.01uF, R1=R2=3K, Rf=2k, Ra=1k.acc....
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It is ADC0804 to be left-handed, it is 74HC573 latch to be right hand, the latch connected the one-chip computer and has not drawn at the same time. The pin CSAD of ADC0804 is a chip selection pin because acted as effectively by the low level Hand over 0....
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Using modulated rectangular waves of different time periods, the circuit presented here produces ringing tones similar to those produced by a telephone. The circuit requires four astable multivibrators for its working. Therefore two 556 ICs are used here.....
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Simple add-on module, Switchable “Control-flat†option In order to obtain a good audio reproduction at different listening levels, a different tone-contro....
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This page documents an older version of the project that proved very unreliable. This is (still) an ongoing project when I get free time, so I post periodic updates here until I get a proper design/rig and eventually create a new page for it (with pictures....
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The clock described on this page is the result of both events, a simple single digit nixie clock with some interesting features, but without any difficult components. This clock first of all demonstrates that it is possible to use standard, low-voltage,....
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This circuit in below uses the Mitsubishi M65830 Digital Delay chip. This has been around for a while now, and is simple and effective (provided that a fixed delay is acceptable). The serial data required to obtain different delay settings is not easily....
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and the most likely problem with my wiring is ME. My apologies for the long post but I thought the more information and pictures I can provide the....
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If you have an application in which a MOSFET is already used to switch a load, it is relatively easy to add short-circuit or overload protection. Here we make use of the internal resistance RDS(ON), which produces a voltage drop that depends on the amount of....
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This circuit is for graphic equalizer that can build with low components count and control using LA3600 single IC chip. The internal design of the chip uses transistors gyrator circuit, with connections to external capacitors to set the response. This is the....
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This time on we Will Share About Yo3dac Homebrew Rf Circuit Design Ideas Latest Info at Onmilwiki....
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NEC`s UPB1008K is a Silicon RFIC especially designed for handheld low power/low cost GPs receivers. The IC com- bines an LNA followed by a double-conversion RF/IF downconverter block and a PLL Frequency Synthesizer on one chip. The second IF Freqency is a....
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The tuner is programmable via I ²C-Bus and provides a FBAS signal at its output. There is also the homepage of Georg Acher containing information about this tuner. I have developed a control circuit for this tuner which uses the AT89C2051 from Atmel.....
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It is illegal in most countries to operate radio transmitters without a license so take care with transmitter circuits. This FM low power circuit may be tuned to operate over the range 87-108 MHz band II, with a range of 20 or 30 metres. Active components in....
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One spark gap (in a first version these were just copper wires bent into a ring at the end to suppress corona, the current design is somewhat more sophisticated and uses spherical electrodes), It produces a 300kV output pulse with a discharge energy of 36....
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This handy circuit can be used to charge from one to 12 NiCd cells from a car battery. Up to six cells can be charged with switch S1 in the "normal" position. The LM317regulator operates as a simple current source, providing about 530mA when R1 = 2. 35O (two....
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Need to amplify the output of the iPod`s headphone jack would not be enough to provide the chip with a large enough signal to respond to, but this was because I had been researching three different chips. The LM3914 is a linearly calibrated device, so its....
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This Precision Power Supply is a nice addition on your workbench as primary, or in my case, a supplementary power supply. With zero to 40V and 2A with adjustable current limiting it will surely gets lots of use on your bench. On average the most amperage for....
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The hobby circuit below uses an unusual method to generate about 12, 000 volts with about 5uA of current. Two SCRs form two pulse generator circuits. The two SCRs discharge a 0. 047uF a 400v capacitor through a xenon lamp trigger coil at 120 times a second.....
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Here are two simple 12V DC motor speed controllers that can be built for just a few dollars. They exploit the fact that the rotational speed of a DC motor....
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The Passive tone control circuit be the circuit fines the bass that has no the expansion but will give kind equipment R and C. It perform filter frequency then the circuit that build easy and must not use power supply. By can concede the porch with part....
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Function: to increase or decrease the time constant with the capacitor, which increases or decreases the ramp time. Component: Transistor, Capacitor, Resistor, ....
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This inductance meter is actually an adapter to your digital voltmeter (DVM). Using this circuit now your voltmeter is capable of measuring inductor value. Inductance meter is very helpful in designing switch mode power supply, since its often needed to wind....
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A very simple high efficiency switching mode buckboost power supply circuit can be designed using the LTM4609 switching regulator IC. This switching power supply circuit will provide an fixed output voltage of 12 volt. As you can see in the schematic....
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Ever accidentally left your front door ajar and had a pet escape Here is a smart solution to this problem. The circuit is fairly simple but a great example of using a tiny circuit to get the job done. All you need is a CD4011 IC plus a handful of components.....
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Using a single 7812 IC voltage regulator and multiple outboard pass transistors, this power supply can deliver output load currents of up to 30 amps....
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Squarer circuit is used to shape signal, to get more defined square wave. This circuit is useful to make convert the signal so it has very fast rise time. Here....
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Circuits that generates PWM pulses. Most of them will translate a resistor value into duty cycle change. Although that is handy and easy, sometimes a voltage controlled PWM generator is needed. There are of course those micro-controllers that could make....
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This project shows how to create an MB Electronics Simon game clone using an 8-pin PIC12F683 microcontroller. The game includes a full emulation of the original Simon `game 1` and the ability to select from 4 skill levels which control the number of colours....
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An automatic brightness adjustment is a closed loop system that has the capability to assess ambient light and adjust the brightness of the display accordingly. In ....
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The following circuit shows about IC BA1404 For Stereo FM Transmitter Circuit Diagram. Features: easy enough for everyone to build, has a ....
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22Watt x 2 audio amplifier circuit diagram. This circuit uses IC TDA 1558 from Philips. TDA1558 is a monolithic integrated class-B Output power amplifier in 17-lead single-in-line (SIL) plastic package. The amplifier based on the class H from Philips audio....
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This circuit is a circuit that sounds a siren-like sound of ambulance sirens. This circuit is different to an ambulance siren circuit generally, is to use transistors instead of IC 555. Which allows economical and easy to tailor a network. Operation of the....
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At low output power, up to 18 W, the device operates as a normal BTL amplifier. When a larger output voltage swing is required, the internal supply voltage is lifted by means of the external electrolytic capacitors. Due to this momentarily higher supply....
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This is a circuit of difference amplifier. This circuit is an inverting amplifier that allows the subtraction of two voltages and that is the summing....
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We can construct a tachometer using the TC9400 in the F/V mode to convert the frequency information (RPM) into a linearly proportional voltage. Then we can compare this voltage to one of n comparators (on this example using 8). The respective LED lights up....
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This thing is a very nifty capacitive sensor. For you europeans, this little gem is used in north america mostly for detecting wooden beams behind drywall or plaster. I`ll take one of these over the new design any day, because these ones don`t error out....
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In this diagram, look to see if you have battery voltage at these points. You don`t have to check every point, just enough of them to confirm that all points have power. Let me know and I`ll bring you to the next level after you report back. Ok Dave, fuses....
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Voltage depletion is also called "sag" by some folks. The same general concept I`m covering in this project may be referred to as a 9v sag circuit. I learned to avoid using the word "sag" as many folks confuse it with tube amp sag which is an entirely....
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a circuit diagram showing how the accelerometer is connected to an Arduino board & external power source (not complicated at all, is it)..
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This amplifier was designed to provide a use for the otherwise useless TO3 power transistors that many hobbyists have in their junk pile. With good construction the module is capable of high quality performance and is rated to 300 watts into a 4 ohm load....
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I`ve been working on a project that will allow me to determine the number of sun hours available in a given spot, and track that over time, as a component of solar power installation design. The idea is to get a light detector in the sun, record the number....
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A 6 watt audio amplifier circuit using TDA2613 is shown here. TDA2613 is an integrated Hi-Fi audio amplifier IC from Philips Semiconductors. The IC is swi....
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A dancing light can be easily constructed using a 555 timer wired in astable mode. Please read the article Astable Multivibrator using 555 Timer before continuing. This circuit blinks two LEDsalternativelywith some delay and it can be easily modified to....
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Strictly speaking, this simple circuit shouldn t work! How could anyone expect an ordinary light dependent resistor photo cell to ‘see through a fingerti....
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This circuit is designed to provide an inexpensive way to create a High Impedance Voltmeter while making use of an inexpensive analog or digital multi meter. The circuit is specifically designed for testing phototransistors. This the figure for the circuit;....
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This schematic below was built using a 2-layer evaluation board for the AD9662 3-Channel Laser Diode Driver,this device are used mainly for high performance CD-DVD recordable drives and laser diode current switching..