…Simple Sensitive Tester for Infrared (IR) Remote Control Long Range/Distance Infrared Transmitter Telephone Amplifier using LM386 Two Station Intercom based on LM386 Telephone Switcher Low-Cost and Simple Intercom Toy Car…
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1 – 9V Variable Desktop Power Supply
…supply box shown below: Then open up the case of the desktop computer and hook up the input line of is circuit to a free available (hanging) four-pin drive power…
Three Stage 9V FM Transmitter
…The tank circuit is connected in a Hartley oscillator circuit. The final stage built around T3 amplifies the output RF signal. Download the complete manual and explanation in PDF version…
Car Transistor Ignition
…ohm / 1W Car Transistor Ignition Specifications : Completely shockproof Practically test on 2-4-6-8 cylinder engines during a total amount of 2.500.000 km. Principle: transistorized ignition Connection element: Darlington transistor,…
Maestro Boomerang Pedal
…that comes close is my Electro-Harmonix Crying Tone. The Boomerangs were manufactured by All Test Devices for the Maestro brand, which was a subsidiary of Gibson. The first model, the…
7 Segment LED Digital Clock with IC MM5314N
…Discontinue, National Semiconductor) GR1 = 4X1N4002 T1 = 220V AC/12V 1A DS1 a DS7 = Display Common Anodo Datasheet document for digital clock IC MM5314N can be accessed here: http://www.datasheetspdf.com/PDF/MM5314N/514207/1…
Solid State Relay
This is the circuit diagram of solid state relay. In reality, it is not a relay after all. There’s no ‘relay’ found, just the electronics circuit which does the switching….
Variable / Adjustable DC Power Supply 1.2V – 25V using LM338K
…hobbysts have high level of creativity, may be you’ll face some problems during the practice and you’ll solve the problem by yourself.. π PCB Layout Design: Component Placement: Good luck……
Simple and Low Cost Dew Sensor
…low compared to that at its inverting input (pin 2) terminal. The corresponding output of the comparator (at pin 1) is accordingly low and thus nothing happens in the circuit….
Power Amplifier 2000 Watt
This is linear power amplifier 2000 Watt which need advance knowledge in electronics since the schematic diagram is very complex for hand made circuit. I think you have to re-design…