New Circuits Page 188
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This inverter circuit can offer a really stable 230V Output Voltage. Frequency of operation is decided by a VR1 and is generally set to 60 Hz. varied off the shelf transformers can be used. Or Custom wind your own for best results. additional MosFets can....
-
Flying hand launch gliders means living with small capacity receiver NiCad battery packs. These small packs are light, but have the distinct disadvantage of rapidly depleting. You can carefully time your flights, but you end up either crashing when your....
-
With the following circuit you can easily program the AVR microcontrollers AT90S1200, AT90S2313 (or ATtiny2313), AT90S8515 and AT90S4414, using the freeware programmer PonyProg by Claudio Lanconelli. You can download the program for free from the author`s....
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-
E Shore Technologies is a robotic solution provider company in Malaysia. We provide robotic parts, robotic services, embedded system and hobby kit for the robotic market and in the mean time we open source everything we know about robotics, electronics,....
-
-
UPS (Uninterruptible Power Supply) Reference Design provides a ready-made uninterruptible power supply solution with the flexibility of a microcontroller - PIC17C43 that offers a low cost solution and high performance not found in other microcontrollers. The....
-
-
The circuit consists of a white noise generator which only switches on with the high part of the square wave output from the clock circuit. The frequency of the clock is adjusted with the 10 pot and the output voltage of the clock is adjusted by the 100 k....
-
Be sure to use the correct 9-pin `D` type connector so the pins fit in the board. The two outer holes for mounting the 9-pin `D` type connector should be 3mm Dia. and the holes for the pins are 1. 2mm Dia. The PCB is also tailored for a PCB mounting 5-pin....
-
This circuit is a circuit diagram of a remote control using DTMF. Actuality we achieve the use of DTMF (dual tone multi-frequency) signals (used the phone to punch in numbers) as the influence of the code. DTMF tones used for the abundance accentuation of....
-
-
The new version has PCBs available, and is recommended for the best sound quality. If you need tone controls, you should see Project 97 which has excellent sound quality, and includes tone controls Much has been made of preamps, but provided a few simple....
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PWM is a device that may be used as an efficient light dimmer or DC motor speed controller. Function: for a general purpose device that can ....
-
-
This page describes a color clock that displays the time using two RGB LEDs, one for hours and one for minutes, showing time by using the standard color coding used for components (with two additional colors as the standard color coding only has ten colors....
-
The model 4017 integrated circuit is a CMOS counter with ten output terminals. One of these ten terminals will be in a "high" state at any given time, with all others being "low, " giving a "one-of-ten" output sequence. If low-to-high voltage pulses are....
-
-
While talking to a distant subscriber on telephone, quite often we feel frustrated when the voice of the distant subscriber is so faint that it is barely intelligible. To overcome the problem, circuit of an inexpensive amplifier is presented here. It can be....
-
-
This is just a quick post at the moment because the project isn`t done and I am distracted by other things. The thermostat for the central heater in my house became unreliable a week or two ago. My wife rang around and a new one from the manufacturer of the....
-
-
Accurate control of water temperature, this got me thinking and I figured it was a good opportunity to have a play. To control the temperature I decided to try and put some of the theory I was taught at uni into practice. I had it in my head even though it....
-
The circuit is a DC to DC converter using a standard 12 VAC center tapped power transformer wired as a blocking oscillator. The circuit is not very efficient but will produce a high voltage usable for low power applications. The input battery voltage is....
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-
This circuit will light a lamp at a remote location when the doorbell switch is pressed. This circuit should only be used with the solenoid type doorbells, the electronic type that play tunes will not work here. It is quite easy to miss the sound of a....
-
This circuit uses two quad op-amps to form an eight LED audio level meter. The op-amp used in this particular circuit is the LM324. It is a popular IC and should be available from many parts stores. The 1K resistors in the circuit are essential so that the....
-
To sense and control the current in stepping motors and other similar devices, we can use a linear integrated circuit like L6506. The chip set forms a constant....
-
Using a flywheel-driven permanent magnet DC generator to charge up a bank of supercapacitors, 35 farad rated to 25V. For safety I limit the max charge to 22V via a comparator and a zener reference. Because I have no stable reference voltage at all in in this....
-
Pictures and a sample schematic (including pinouts) of an AMP hexadecimal (16-position) switch with screw slot actuator....
-
GND and VCC are perpendicular to the rest of the pins in the circuit diagrams, whereas the real Z80 is a DIP with no pins at all in these locations. I find that this makes the circuit diagram harder to read. I have to map between the real physical pins and....
-
-
Wouldn`t be cool sitting at your favorite coffee shop with this phone on the table, and while chatting with your friends the Ericofon rings and it is a call for you Or picking it up, hearing a dial tone, cranking up the rotary dial and dialing home to say....
-
I have several Hall Effect sensors and would like to use them with my BS2. One application would be to count wheel turns. I have done a search of the internet but can not find a schematic for connecting it to a BS2. Can anyone help me out with a schematic? I....
-
-
An flashing airbag diagnostic code of 51 flashing on a 1994 Ford F150, and I need to understand what this could mean. The probem started about one month ago. I also had a leaky windsheild, so I am also wonder if that could affect the airbag module as well.....
-
This FET audio mixer is an example of FET`s versatility. FETs are originally designed for high frequency applications but they can be used for audio frequencies and in fact they perform excellently in this area. The number of inputs that can be connected to....
-
The figure is a schematic circuit of UV sensor. When UV sensor is coupled by voltage between the cathode and anode, and the UV radiation gets through the quartz glass tube on the cathode of the optical surface, because of the cathode material coated with....
-
The main purpose of this design was to obviate a small defect of the very popular Fridge Door Alarm circuit, available on this website since 1999 and built by a lot of hobbyists. Unfortunately, that circuit stops operating when the battery voltage falls....
-
I need a circuit diagram for electronic ballast (40w,230v) transistor based circuit diagram. What are the steps taken to design a electronic ballast?....
-
Provide your radio with a actual cord signal, again acclimatize the HIGH LEVEL pot to the beginning of anecdotic the aftermost LED (all LEDs on). Remove the arresting completely, again acclimatize the LOW LEVEL pot to the beginning of no LEDs illuminated. If....
-
First I bought another front wheel, one which has a dynamo already built in the hub. This supplied a nice sine wave of 30 Vpp (at no load). With this knowledge I designed a simple power supply. The transistors that are used are type BD911. These are a bit of....
-
The threaded drive rod was made from standard 5/16 inch Whitworth threaded rod (18 TPI), only because this was to hand. M8 metric thread could have been used. The radius of the curve in the drive rod (which must be equal to the distance between the hinge and....
-
This design is based on the 18 Watt Audio Amplifier, and was developed mainly to satisfy the requests of correspondents unable to locate the TLE2141C chip. It uses the widespread NE5532 Dual IC but, obviously, its power output will be comprised in the 9. 5 -....
-
-
This report describes the operation and adjustment of a Phase Locked Loop hum cancellation circuit that can be used to reduce the residual hum from any amplifier. Normally this is useful for DHT amplifiers with AC operated filaments, as even with a hum....
-
The basic circuit illuminates up to ten LEDs in sequence, following the rhythm of music or speech picked-up by a small microphone. The expanded version can drive up to ten strips, formed by up to five LEDs each, at 9V supply. IC1A amplifies about 100 times....
-
-
Light-Operated Ring Circuit Average telephone ring circuit is composed of KA2401 and peripheral components. When adding light-operated ring circuit, just connects the part X in picture a with light-operated circuit in picture b. When there is input of AC....
-
This is a good Electronics & communication project on GSM Based Voting Machine System which uses AT commands to sens SMS through Microcontroller. The project has 2 modes viz. Normal mode and Security mode. In normal mode an authorized person of a local area....
-
For this article, we will use the 128K EPROM (27C128 used in the 1986 to 1989 IROC-Zs with the 1227165 ECMs) as the basis for our discussion. This purpose of this article is to educate those on a little bit of binary and hexadecimal background, in order to....
-
Interfacing the LM335A temperature sensor to A/D converters, measuring temperature with LM35 LM335A sensor and the 9S12 HCS12 MCU, calibrated and uncalibrated temperature errors of IC temperature sensors....
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-
Frequency converters are protected from surges with surge protective devices for which the maximum continuous operating voltage Uc has to be taken...
-
-
Here is a strobe light circuit which has an option to set the flashing rate. Unlike other circuits here we use a Flash tube that usually use in flash cameras. In ordinary cameras, the flash may be work only after ten or twenty seconds. But in this circuit we....
-
Using this schematic electronic project can be designed a very simple water level indicator electronic circuit that uses a 7-segment display to indicate the water level (low, half and full)in the tank. This water level indicator electronic circuit shows the....
-
The IR Widget captures the infrared signals used by remote controls. It is able to determine the carrier frequency and demodulate the carrier in the digital or analog domain. The captured information can be used to reproduce or recognize the signal. The....
-
-
This circuit produces the power to drive a bipolar stepper motor. The rotation speed and the rotation direction of the stepper motor can be changed. This circuit consists of two integrator circuits (A1, A3) and the amplifier (A2) connected in series. This....
-
3-3.5 Watt FM Transmitter. This is the schematic for an FM transmitter with 3 to 3.5 W output power that can be used between 90 and 110 MHz. Although the stability isn`t so bad, a...
-
Good/Bad transistor tester means that this instrument can only determine if the transistor is good or bad, nothing more. Any transistor with gain equal to 30....
-
The operation of the converter is based on the weighted adding and transferring of the analogue input levels and the digital output levels. It consists of comparators and resistors. In theory, the number of bits is unlimited, but each bit needs a comparator....
-
Single-ended primary inductance converter (SEPIC) topology is a good choice for automotive power systems that require an output voltage between the low and high values of the input voltage. SEPIC topology fits this application because its duty ratio can be....
-
The LTC3717 is a synchronous step-down switching regulator controller for double data rate (DDR) and Quad Data Rate (QDRTM) memory termination. The controller uses a valley current control architecture to deliver very low duty cycles without requiring a....
-
-
Nothing wrong at all with that setup IMO. I`ve an (older) Peltor FMT15 amp in my Golf. Works awesome for 2 Peltor headsets. The issue is mixing Peltor & Terraphone headsets/amps. All (3) of the cars I`ve co-driven in this year have Terraphone amps. They`ve....
-
Protect your expensive batteries from discharge damage with this mini-sized electronic cutout switch. It uses virtually no power and can be built to suit a wide range of battery voltages. Back in May 2002, we (Silicon Chip) presented the "Battery Guardian",....
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-
-
Batcopter was built for Stanford`s first of three Mechatronics courses, ME218A. It is a mechanical version of the classic flash game Helicopter. The game has additional interactions for added complexity including enemies & different modes of difficulty. It....
-
Voltage-to-frequency converter (VFC)? circuit is shown in the schematic diagram below. The circuit employs 555 IC as the core of its function. This circuit ...
-
The test beeper generates a sinusoidal signal with a frequency of 1,000 Hz, a common test frequency for audio amplifiers. It consists of a classical Wien-....
-
Fluorescent tubes use far less energy than incandescent lamps and fluorescent tubes last a great deal longer as well. Other advantages are diffuse, glare-free lighting and low heat output. For these reasons, fluorescent lighting is the natural choice in....
-
-
-
Here we are using the Trigger and Threshold pins (2 & 6) to detect the maximum and minimum levels, respectively. The two voltage comparator op-amps inside the 555 control the output, turning it on/off. Looking at the circuit diagram you will notice that the....
-
This circuit is useful in liquids level or proximity detection. It operates detecting the distance from the target by reflection of an infra-red beam. It can safely detect the level of a liquid in a tank without any contact with the liquid itself. The....
-
The RCA-83 rectifier makes use of 5VAC for the filaments. The heaters for the 5687 tubes are provided from a full bridge of MUR860 diodes, followed by 5 x 10, 000uF Elna caps. 830mA of current regulation is supplied using a LM317 regulator plus a 1R5....
-
First you need a mechanical power source like a turbine(powered by water falling), wind turbine, gas turbine or steam turbine. A shaft from one of these devices is connected to a generator to make power. Dynamos and generators work using the wild complex....
-
-
In the figure is the FM modulation circuit of crystal oscillator. FM modulation has direct and indirect FM ways, the direct FM method is to directly change the frequency of the oscillating circuit, it`s simple, but as it is the LC oscillating circuit, the....
-
There is one class of filter called "all-pass" that does not affect the response, only phase. While at first look this might be thought rather pointless, like all circuits that have been developed over the years it often comes in very handy. Filters also....
-
-
This project has an impossible requirement or uses parts that are no longer available. It is here for reference or inspiration only. Consider it unsupported . This project displays telephone numbers decoded from tones. Specifically, telephone touchtones.....
-
Protect your valuable laptop against theft using this miniature alarm generator. Fixed in-side the laptop case, it will sound a loud alarm when someone tries to take the laptop. This highly sensitive circuit uses a homemade tilt switch to activate the alarm....
-
Improved Vibrating Battery Tester. This Circuit Based On The LM393 IC. Features: to test the batteries,It will test AAA, AA, C and D cells, as ....
-
Usually, the electrical system of the 2005 Yamaha DT125X consists of CDI unit, battery, thermo unit, rectifier/regulator servomotor, fuse, neutral switch, ignition coil and main switch. (click image to enlarge)..
-
-
-
-
Circuit to control RC servos using 0-10V control voltage..
-
Microcontroller Based Accelerometer Project. Just as a speedometer is a meter that measures speed, an accelerometer is a meter that measures acceleration ..
-
The CXG1024N is a high power Antenna Switch MMIC to connect TX/RX to one of 4 Antennas This IC is designed using the Sonys GaAs J-FET process and operates at a single positive power supply. By Sony Electronics ..
-
ESP - Sinewave generation principles. While this should be a simple enough exercise, it isn`t, and this article explains why....
-
-
-
-
-
-
If you want to send video and audio signals are spread to multiple televisions simultaneously. You may use a Video amplifier splitter by transistor....
This inverter circuit can offer a really stable 230V Output Voltage. Frequency of operation is decided by a VR1 and is generally set to 60 Hz. varied off the shelf transformers can be used. Or Custom wind your own for best results. additional MosFets can....
Flying hand launch gliders means living with small capacity receiver NiCad battery packs. These small packs are light, but have the distinct disadvantage of rapidly depleting. You can carefully time your flights, but you end up either crashing when your....
With the following circuit you can easily program the AVR microcontrollers AT90S1200, AT90S2313 (or ATtiny2313), AT90S8515 and AT90S4414, using the freeware programmer PonyProg by Claudio Lanconelli. You can download the program for free from the author`s....
E Shore Technologies is a robotic solution provider company in Malaysia. We provide robotic parts, robotic services, embedded system and hobby kit for the robotic market and in the mean time we open source everything we know about robotics, electronics,....
UPS (Uninterruptible Power Supply) Reference Design provides a ready-made uninterruptible power supply solution with the flexibility of a microcontroller - PIC17C43 that offers a low cost solution and high performance not found in other microcontrollers. The....
The circuit consists of a white noise generator which only switches on with the high part of the square wave output from the clock circuit. The frequency of the clock is adjusted with the 10 pot and the output voltage of the clock is adjusted by the 100 k....
Be sure to use the correct 9-pin `D` type connector so the pins fit in the board. The two outer holes for mounting the 9-pin `D` type connector should be 3mm Dia. and the holes for the pins are 1. 2mm Dia. The PCB is also tailored for a PCB mounting 5-pin....
This circuit is a circuit diagram of a remote control using DTMF. Actuality we achieve the use of DTMF (dual tone multi-frequency) signals (used the phone to punch in numbers) as the influence of the code. DTMF tones used for the abundance accentuation of....
The new version has PCBs available, and is recommended for the best sound quality. If you need tone controls, you should see Project 97 which has excellent sound quality, and includes tone controls Much has been made of preamps, but provided a few simple....
PWM is a device that may be used as an efficient light dimmer or DC motor speed controller. Function: for a general purpose device that can ....
This page describes a color clock that displays the time using two RGB LEDs, one for hours and one for minutes, showing time by using the standard color coding used for components (with two additional colors as the standard color coding only has ten colors....
The model 4017 integrated circuit is a CMOS counter with ten output terminals. One of these ten terminals will be in a "high" state at any given time, with all others being "low, " giving a "one-of-ten" output sequence. If low-to-high voltage pulses are....
While talking to a distant subscriber on telephone, quite often we feel frustrated when the voice of the distant subscriber is so faint that it is barely intelligible. To overcome the problem, circuit of an inexpensive amplifier is presented here. It can be....
This is just a quick post at the moment because the project isn`t done and I am distracted by other things. The thermostat for the central heater in my house became unreliable a week or two ago. My wife rang around and a new one from the manufacturer of the....
Accurate control of water temperature, this got me thinking and I figured it was a good opportunity to have a play. To control the temperature I decided to try and put some of the theory I was taught at uni into practice. I had it in my head even though it....
The circuit is a DC to DC converter using a standard 12 VAC center tapped power transformer wired as a blocking oscillator. The circuit is not very efficient but will produce a high voltage usable for low power applications. The input battery voltage is....
This circuit will light a lamp at a remote location when the doorbell switch is pressed. This circuit should only be used with the solenoid type doorbells, the electronic type that play tunes will not work here. It is quite easy to miss the sound of a....
This circuit uses two quad op-amps to form an eight LED audio level meter. The op-amp used in this particular circuit is the LM324. It is a popular IC and should be available from many parts stores. The 1K resistors in the circuit are essential so that the....
To sense and control the current in stepping motors and other similar devices, we can use a linear integrated circuit like L6506. The chip set forms a constant....
Using a flywheel-driven permanent magnet DC generator to charge up a bank of supercapacitors, 35 farad rated to 25V. For safety I limit the max charge to 22V via a comparator and a zener reference. Because I have no stable reference voltage at all in in this....
Pictures and a sample schematic (including pinouts) of an AMP hexadecimal (16-position) switch with screw slot actuator....
GND and VCC are perpendicular to the rest of the pins in the circuit diagrams, whereas the real Z80 is a DIP with no pins at all in these locations. I find that this makes the circuit diagram harder to read. I have to map between the real physical pins and....
Wouldn`t be cool sitting at your favorite coffee shop with this phone on the table, and while chatting with your friends the Ericofon rings and it is a call for you Or picking it up, hearing a dial tone, cranking up the rotary dial and dialing home to say....
I have several Hall Effect sensors and would like to use them with my BS2. One application would be to count wheel turns. I have done a search of the internet but can not find a schematic for connecting it to a BS2. Can anyone help me out with a schematic? I....
An flashing airbag diagnostic code of 51 flashing on a 1994 Ford F150, and I need to understand what this could mean. The probem started about one month ago. I also had a leaky windsheild, so I am also wonder if that could affect the airbag module as well.....
This FET audio mixer is an example of FET`s versatility. FETs are originally designed for high frequency applications but they can be used for audio frequencies and in fact they perform excellently in this area. The number of inputs that can be connected to....
The figure is a schematic circuit of UV sensor. When UV sensor is coupled by voltage between the cathode and anode, and the UV radiation gets through the quartz glass tube on the cathode of the optical surface, because of the cathode material coated with....
The main purpose of this design was to obviate a small defect of the very popular Fridge Door Alarm circuit, available on this website since 1999 and built by a lot of hobbyists. Unfortunately, that circuit stops operating when the battery voltage falls....
I need a circuit diagram for electronic ballast (40w,230v) transistor based circuit diagram. What are the steps taken to design a electronic ballast?....
Provide your radio with a actual cord signal, again acclimatize the HIGH LEVEL pot to the beginning of anecdotic the aftermost LED (all LEDs on). Remove the arresting completely, again acclimatize the LOW LEVEL pot to the beginning of no LEDs illuminated. If....
First I bought another front wheel, one which has a dynamo already built in the hub. This supplied a nice sine wave of 30 Vpp (at no load). With this knowledge I designed a simple power supply. The transistors that are used are type BD911. These are a bit of....
The threaded drive rod was made from standard 5/16 inch Whitworth threaded rod (18 TPI), only because this was to hand. M8 metric thread could have been used. The radius of the curve in the drive rod (which must be equal to the distance between the hinge and....
This design is based on the 18 Watt Audio Amplifier, and was developed mainly to satisfy the requests of correspondents unable to locate the TLE2141C chip. It uses the widespread NE5532 Dual IC but, obviously, its power output will be comprised in the 9. 5 -....
This report describes the operation and adjustment of a Phase Locked Loop hum cancellation circuit that can be used to reduce the residual hum from any amplifier. Normally this is useful for DHT amplifiers with AC operated filaments, as even with a hum....
The basic circuit illuminates up to ten LEDs in sequence, following the rhythm of music or speech picked-up by a small microphone. The expanded version can drive up to ten strips, formed by up to five LEDs each, at 9V supply. IC1A amplifies about 100 times....
Light-Operated Ring Circuit Average telephone ring circuit is composed of KA2401 and peripheral components. When adding light-operated ring circuit, just connects the part X in picture a with light-operated circuit in picture b. When there is input of AC....
This is a good Electronics & communication project on GSM Based Voting Machine System which uses AT commands to sens SMS through Microcontroller. The project has 2 modes viz. Normal mode and Security mode. In normal mode an authorized person of a local area....
For this article, we will use the 128K EPROM (27C128 used in the 1986 to 1989 IROC-Zs with the 1227165 ECMs) as the basis for our discussion. This purpose of this article is to educate those on a little bit of binary and hexadecimal background, in order to....
Interfacing the LM335A temperature sensor to A/D converters, measuring temperature with LM35 LM335A sensor and the 9S12 HCS12 MCU, calibrated and uncalibrated temperature errors of IC temperature sensors....
Frequency converters are protected from surges with surge protective devices for which the maximum continuous operating voltage Uc has to be taken...
Here is a strobe light circuit which has an option to set the flashing rate. Unlike other circuits here we use a Flash tube that usually use in flash cameras. In ordinary cameras, the flash may be work only after ten or twenty seconds. But in this circuit we....
Using this schematic electronic project can be designed a very simple water level indicator electronic circuit that uses a 7-segment display to indicate the water level (low, half and full)in the tank. This water level indicator electronic circuit shows the....
The IR Widget captures the infrared signals used by remote controls. It is able to determine the carrier frequency and demodulate the carrier in the digital or analog domain. The captured information can be used to reproduce or recognize the signal. The....
This circuit produces the power to drive a bipolar stepper motor. The rotation speed and the rotation direction of the stepper motor can be changed. This circuit consists of two integrator circuits (A1, A3) and the amplifier (A2) connected in series. This....
3-3.5 Watt FM Transmitter. This is the schematic for an FM transmitter with 3 to 3.5 W output power that can be used between 90 and 110 MHz. Although the stability isn`t so bad, a...
Good/Bad transistor tester means that this instrument can only determine if the transistor is good or bad, nothing more. Any transistor with gain equal to 30....
The operation of the converter is based on the weighted adding and transferring of the analogue input levels and the digital output levels. It consists of comparators and resistors. In theory, the number of bits is unlimited, but each bit needs a comparator....
Single-ended primary inductance converter (SEPIC) topology is a good choice for automotive power systems that require an output voltage between the low and high values of the input voltage. SEPIC topology fits this application because its duty ratio can be....
The LTC3717 is a synchronous step-down switching regulator controller for double data rate (DDR) and Quad Data Rate (QDRTM) memory termination. The controller uses a valley current control architecture to deliver very low duty cycles without requiring a....
Nothing wrong at all with that setup IMO. I`ve an (older) Peltor FMT15 amp in my Golf. Works awesome for 2 Peltor headsets. The issue is mixing Peltor & Terraphone headsets/amps. All (3) of the cars I`ve co-driven in this year have Terraphone amps. They`ve....
Protect your expensive batteries from discharge damage with this mini-sized electronic cutout switch. It uses virtually no power and can be built to suit a wide range of battery voltages. Back in May 2002, we (Silicon Chip) presented the "Battery Guardian",....
Batcopter was built for Stanford`s first of three Mechatronics courses, ME218A. It is a mechanical version of the classic flash game Helicopter. The game has additional interactions for added complexity including enemies & different modes of difficulty. It....
Voltage-to-frequency converter (VFC)? circuit is shown in the schematic diagram below. The circuit employs 555 IC as the core of its function. This circuit ...
The test beeper generates a sinusoidal signal with a frequency of 1,000 Hz, a common test frequency for audio amplifiers. It consists of a classical Wien-....
Fluorescent tubes use far less energy than incandescent lamps and fluorescent tubes last a great deal longer as well. Other advantages are diffuse, glare-free lighting and low heat output. For these reasons, fluorescent lighting is the natural choice in....
Here we are using the Trigger and Threshold pins (2 & 6) to detect the maximum and minimum levels, respectively. The two voltage comparator op-amps inside the 555 control the output, turning it on/off. Looking at the circuit diagram you will notice that the....
This circuit is useful in liquids level or proximity detection. It operates detecting the distance from the target by reflection of an infra-red beam. It can safely detect the level of a liquid in a tank without any contact with the liquid itself. The....
The RCA-83 rectifier makes use of 5VAC for the filaments. The heaters for the 5687 tubes are provided from a full bridge of MUR860 diodes, followed by 5 x 10, 000uF Elna caps. 830mA of current regulation is supplied using a LM317 regulator plus a 1R5....
First you need a mechanical power source like a turbine(powered by water falling), wind turbine, gas turbine or steam turbine. A shaft from one of these devices is connected to a generator to make power. Dynamos and generators work using the wild complex....
In the figure is the FM modulation circuit of crystal oscillator. FM modulation has direct and indirect FM ways, the direct FM method is to directly change the frequency of the oscillating circuit, it`s simple, but as it is the LC oscillating circuit, the....
There is one class of filter called "all-pass" that does not affect the response, only phase. While at first look this might be thought rather pointless, like all circuits that have been developed over the years it often comes in very handy. Filters also....
This project has an impossible requirement or uses parts that are no longer available. It is here for reference or inspiration only. Consider it unsupported . This project displays telephone numbers decoded from tones. Specifically, telephone touchtones.....
Protect your valuable laptop against theft using this miniature alarm generator. Fixed in-side the laptop case, it will sound a loud alarm when someone tries to take the laptop. This highly sensitive circuit uses a homemade tilt switch to activate the alarm....
Improved Vibrating Battery Tester. This Circuit Based On The LM393 IC. Features: to test the batteries,It will test AAA, AA, C and D cells, as ....
Usually, the electrical system of the 2005 Yamaha DT125X consists of CDI unit, battery, thermo unit, rectifier/regulator servomotor, fuse, neutral switch, ignition coil and main switch. (click image to enlarge)..
Microcontroller Based Accelerometer Project. Just as a speedometer is a meter that measures speed, an accelerometer is a meter that measures acceleration ..
The CXG1024N is a high power Antenna Switch MMIC to connect TX/RX to one of 4 Antennas This IC is designed using the Sonys GaAs J-FET process and operates at a single positive power supply. By Sony Electronics ..
ESP - Sinewave generation principles. While this should be a simple enough exercise, it isn`t, and this article explains why....
If you want to send video and audio signals are spread to multiple televisions simultaneously. You may use a Video amplifier splitter by transistor....
