New Circuits Page 119
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After searching for a few days i cant find a solution for this idea. Sorry for the wordy`ness I`m creating a switch panel in the dash containing 4....
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A solar water heating pump controller is a key component in most solar water heating systems (DIY or otherwise). The controller is there to turn the pump on when the fluid in the solar panel is hotter than the water in the hot water tank (or swimming pool),....
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A very simple 4 channel video amplifier electronic circuit project can be designed using NJM2582 ic suitable for video applications with SCART connector. Design of the circuit is very simple and require few external electronic parts. Some features of the....
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The USB-Servo is a device to control a servo via USB. A servo is a motorized device that is commonly used in remote controlled cars and planes. I built this device to activate a toy puppet. The puppet has a button on its bottom, if you press the button the....
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This circuit shows an automatic room light circuit diagram. It has a small memory which enables it to automatically switch `on` and switch `off` ....
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Here is a circuit of a LED sequencer / chaser using CD 4017 and NE555 IC. CD 4017 is a CMOS counter IC consist of 16 pins. This IC gives 10 outputs according to the clock pulse it receives from the clock input, which is pin 14. The another IC used in this....
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This circuit solves the problem of sending data over a cable with no free conductors. The data is OOK (on-off keying) modulated and superimposed on a high-frequency carrier so it can be sent over a low-voltage power supply line..
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By the ultrasonic sensor, control and display (or buzzer) and local composition, it can tell the driver his around obstacles by voice or a more intuitive display case. Relieve the driver stop, reverse and start to visit around the vehicle caused by problems,....
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A four-channel programmable signal converter (PSC) that it said will enable complete four-channel signal processing and filtering in minutes. The QF4A512 PSC features a 16-bit analog-to-digital (A/D) converter with four differential or single ended....
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One car audio amplifier with TDA1562Q that can output 50W of audio power. TDA1562Q car amplifier circuit diagram 2 resistors 1 KOhms 2 resistors 4,7 KOhms....
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As it turns out, many types of LEDs appear to exhibit gain effects akin to those of an avalanche photo diode when reverse-biased - an effect that has been observed in the 25-300 volt area with the voltage, spectral response, and overall sensitivity/gain....
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The following circuit diagram is the battery charger for your 12V car battery. Unlike other battery chargers, this circuit featured overcharging protection which automatically disconnect the charging circuit. Most car battery chargers are simple devices that....
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radio transmitters for evesdropping on private conversations and sending video pictures, battery operated....
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We will bypass the mechanical snooze switch on top, and instead turn the alarm clock off in a much more fun way: punching it! Hopefully along the way I will be able to teach you some techniques that are useful in reverse engineering, so you can apply them to....
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This electronic game is simulation of one-arm bandit game. Electronics hobbyists will find it very interesting. When toggle switch S1 is in run` position, all segments of 7-segment displays (DIS1 through DIS3) will light up. On turning toggle switch S1 from....
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Explanation of the theory and practice of generating electrical energy from an marine outboard engine using a permanent magnet alternator..
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This neat little circuit provides 8 LEDs directly driven from the PIC along with a single mode control switch. The firmware elsewhere on this page drives the LEDs with a 5 bit PWM signal providing each of the 8 LED channels with four levels of intensity;....
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This particular timing circuit can be used to time one-shot events from a few seconds to a few hours. And in standby mode (ie, with RLY1 and LED1 off), its power consumption is very low. The heart of this circuit is a low-cost CMOS 4011 quad NAND gate, with....
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I have no experience whatsover with building controllers and have no clue on how to start. I don`t want to spend to much money on the project (< 100 ‚¬) thus money is an issue. The good thing is that I already have a power thyristor. My question is how I can....
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A high voltage power supply can be a really beneficial source which could be properly utilized in a lot of applications like biasing of gas-discharge tubes and radiation detectors and so on. Such a power supply could also be utilized for protection of....
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FM Wireless Microphone has been a very popular project with beginners and experienced constructors alike. It has been used inside guitars and as the basis of a remote control system. I do however, receive many requests for a higher powered circuit and better....
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You can save on your electricity bills by switching to alternative sources of power. The photovoltaic module or solar panel described here is capable of delivering a power of 5 watts. At full sunlight, the solar panel outputs 16. 5V. It can deliver a current....
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You can use 12 V car battery as the 12V input power source. Adjust the potensiometer R1 to get the 50Hz output frequency. Use a 10 A fuse in series with the battery as shown in circuit...
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This digital voltmeter is ideal to use for measuring the output voltage of your DC power supply. It includes a 3. 5-digit LED display with a negative voltage indicator. It measures DC voltages from 0 to 199. 9V with a resolution of 0. 1V. The voltmeter is....
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This Arduino sketch is useful for rescuing ATtiny microcontrollers rendered useless by incorrect fuse settings. It does this by putting the bricked tiny into high-voltage serial programming mode and writingthe fuses to safe values. The Arduino is connected....
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Here we explain a couple RF 433kHz remote control chips especially designed for the purpose. The IC TWS-434 along with its encoder chip HOLTEK`s HT-12E form ahigh class transmitter circuit, whereas the chip RWS-434 through its complementing decoder IC HT-12D....
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If you ever thought of experimenting with pulse-width modulation, this circuit should get you started nicely. We ve kept simplicity in mind and used a dua....
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Humidity detector circuit electronic project using common electronic parts..
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The LED blinks as intended, then stops for an arbitrary time, flashes again a different number of times, off again etc. There doesn`t seem to be any cyclic behaviour to it. It starts working without any external input (i. e. nudging it) so doesn`t seem like....
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A square wave oscillator using 555 IC can be configured to give symmetric oscillation (50% duty cycle). Other circuit uses diodes to split the charging and the...
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Neon glow lamps can also be used only for their U/I characteristic and not for producing light. These lamps are electrically very close to diacs: no current can flow through them since the voltage is lower than a trigger value (about 70V for neon glow lamps....
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Most surviving TR-1s no longer work. Many collectors (such as myself) prefer to keep them in "as-manufactured" condition. That way the authenticity is preserved. But at some point, you may be anxious to hear one play. Before you start soldering, ask one....
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This inverter circuit can be used to power electric razors, stroboscopes and flash tubes, and small fluorescent lamps from a 12 volt car battery. In contrast to the usual feedback oscillator type of inverter, the oscillator of this inverter is separate from....
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This compact design forms a remotely operated switch that receives its control signal via the mains voltage. The switch is operated using the mains remote transmitter` described elsewhere in this issue. With this transmitter, a switch should be connected....
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With just a few parts from old microwave ovens, TV sets, and an oil burner, you can build an affordable instrument for whatever you wish to snap, crackle, or pop! The key component is the voltage multiplier, which I covered in the High Voltage Multiplier....
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Based on the famous AT89C52 microcontroller, this 500 Khz frequency-Meter will be enough to trace and debug most of your circuits, to adjust 555 timers frequency and perform all kind of frequency measurements in Digital circuits. And once you have this tool....
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Tuned circuits consist of C4, L1, C8, L3, and the two 15 pF trimmer capacitors across the collectors and emitters of both transistors. Other NPN transistors like BC54, 2N3642, 43, etc should also work. The circuit is designed for simplicity, so No Audio ....
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A Wien-Bridge oscillator circuit can be built from HA2541 and some basic components. This circuit can generate good-quality sine wave of 40 MHz with an upper limit of 50 MHz. The R3 through R7 and D2 and D1 provide the diode limiting for this circuit. Here....
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LM317HV adjustable regulator is capable of supplying in excess of 1. 5A over a 1. 2V to 57V output range. The design of these high current power supply is very easy, because the LM317HV require just few external resistors to set the output voltage. Further,....
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It is sometimes necessary for an RC (remote control) model to contain some kind of switching functionality. Some things that come to mind are lights on a....
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An IR Remote Control for controlling home appliances can be easily made using Decade Counter CD4017, 555 Timer and TSOP1738 infrared receiver. By using this circuit you can easily control your home appliances using your TV, DVD Player remote control or using....
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The following circuit shows about Repeating Interval Timer Circuit Diagram. This circuit based on the CMOS4060 IC. Features: 6 pin output, IC ....
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It is based on the Miller solar engine and has no digital electronics involved. But before we get started, it must be said that a robot is defined as "a mechanical intelligent agent which can perform tasks on its own". Note that the definition does not state....
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This is a very simple digital thermometer with an Atmel AVR microprocessor, measuring the temperature in range of 2 to 99 °C (degree Celsius) with a resolution of 1 °C. The circuit is controlled by a microprocessor IO1 - Atmel AVR ATmega8, ATmega8L or....
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The pressure sensor (MPX4100)MPX4100 is a pressure sensor that is equipped withsignal conditioning circuit and temperature calibrator makes this sensor stable against temperature changes. For this sensor measurement accuracy using micro-machine techniques,....
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I`m not able to get this circuit to give me full range of motion of a servo (only about 90 degrees). Maybe someone can take a look at the circuit and....
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Do you have a bicycle. why don`t try to build this circuit. . Powered using battery 3-6V. This circuit will help the bicycle driver in the night and help other people to know your presence. Switched ON Bike Lamp circuit diagram: Component part list: R1 =....
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In order to obtain a good audio reproduction at different listening levels, a different tone-controls setting should be necessary to suit the well known behavior of the human ear. In fact, the human ear sensitivity varies in a non-linear manner through the....
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I just bought a 1997 dodge dakota extend cab sport how can i find a tail light wire diagram or brake light diagram ?....
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The DS2715 is a complete NiMH (Nickel Metal Hydride) smart-charger solution with load detection well suited to low-cost applications....
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This is a grid dip oscillator (GDO) circuit developed by Luigi Falcone. This circuit uses seven plug in coils covering 3. 0 to 30Mhz. This circuit can be connected to the a frequency meter by using The coaxial socket J2. The figure below shows the schematic....
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I bought a Doepfer LMK3+ keyboard from a very pleasant chap in Dunedin, via TradeMe, a popular New Zealand auction site. The keyboard features a nice, piano-like Fatar keybed in a rugged flight case. Here`s a photo of another LMK3+, taken from a recent....
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A newer version of this circuit board is available. Rev 4 includes a faster CPU, more memory, more I/O and an optional LCD. We recommend you use Rev 4 for new projects. Even though this older board is no longer available, we are keeping these old pages....
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The Infrared (IR) LED used in a remote control is an application for an LED Driver that has specific requirements that may exceed the requirements for a typical LED driver application. For this application, the IR LED driver will run off a 9V alkaline....
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For the limit switches on a custom 3D printer I`m designing, I want to try out some contactless sensors. I have chosen to use hall effect sensors, which are sensitive to a magnetic field. There are three different types of these sensors available. First,....
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Why an electronic cricket? Many people like the cricket sound specially if they live in a big town. This electronic cricket circuit works in pulses, so the....
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Since we will be opening your VCS and attacking it with a very hot soldering iron, it is possible that you will render your system dead. Neither I, Classicgaming, nor Gamespy are responsible for any damage done to yourself, your Atari, your family, your....
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The transformer is a 220V to 12V, 50Hz and 3. 6VA PCB type transformer. The model seen in the photo is HRDiemen E3814056. Since it is encapsulated, the transformer is isolated from the external effects. A 250V 400mA glass fuse is used to protect the circuit....
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When an electric current is passed through a wire, it creates a magnetic field around it. The wire is wound into a coil to concentrate the magnetic field. Iron is a ferromagnetic material and when placed into the centre of the coil results in a much stronger....
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The 555 Timer is an integrated circuit used as a timer, a pulse generator, tone generator and many other circuit functions, all from one universal IC function. Each pin function is described and design recommendation are given when required. A Monostable....
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This section covers Compact Flash, Flash-ATA and hard disks. For other media see DATA LOGGING TO RAM CARDS, page274, and DATA LOGGING TO FLASH AND RAM CHIPS, page279, With this module you can quickly build tailor-made data collection systems with removable....
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This generally results in a square wave if the frequency of oscillation is low enough relative to the amplifier`s bandwidth Crystal Controlled Oscillator schematic of a low frequency sine wave oscillator featuring low distortion, wideband operation and....
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This is a low-cost project for 20 or 40 watt fluorescent tubes. However the most efficient is to use a 40 watt tube (or two 20 watt tubes in series). It`s a circuit you can put together from junk box components or build from a kit. It`s very simple to build....
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I was messing with the receiver settings , and in the Digital Audio menu , the default setting was OPTICAL .. i changed it to COAX and the sound is better and ....
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hi, Dears . I want to use AD574 ( The ADC574A is a 12-BIT successive approximation analog-to-digital converter .) i want to know , How work this IC ?? ....
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This is a fun and useful circuit for demonstrating high frequency high voltge. It can produce up to about 30KV, depending on the transformer used. It is cheap and easy to make, thanks to the standard TV flyback transformer used. It can power LASERS (although....
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Electronic Circuit Breaker. This circuit can sense the overload condition and breaks the power if the load increases above the set point. It is an ideal circuit to protect Uninterrupted Power Supply devices like Inverter ..
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The circuit remains in stable state until a triggering signal is applied to its input. After getting the triggering signal the output transit from stable to Quasi-stable state and return back after a time period. So a Single Pulse isgenerated for single....
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Using this 555 timer DC motor control electronic project you can control speed of a 6 volts DC motor, by simply rotate left or right the 50 k potentiometer...
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Leo Esaki invented the tunnel diode in 1957 while working at Sony (Tokyo Tsushin Kogyo at the time). Tunnel diodes have a very narrow, heavily doped p n junction only around 10nm (100 G…) wide that exhibits a broken bandgap, where conduction band electrons....
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This 1000 watt power inverter circuit diagram based on MOSFET RF50N06. If you want more power then add additional MOSFET paralleled at RF50N06. This MOSFETS are 60 Volts and 50 Amps as rated. It is necessary to connect a FUSE with the power line and always a....
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The clock is constructed on two boards; one carries the HT generator and the processor logic, the other the tubes. Thisallows a slightly more compact design that the previous effort, but didn`t save as much real estate as I`d hoped. The tubes are mounted on....
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This digital thermometer circuit diagram uses a common 1N4148 diode as the temperature sensor. The temperature coefficient of the diode, -2 mV/°C is ex....
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In this Lesson, we will make a digital temperature meter using DS18B20. The connection between temperature sensor and microcontroller will be done through a single wire. This is advantage of the temperature sensor model. The temperature value will be....