This is Micro-Spy circuit which designed using FET components.. Circuit Notes: (more…)
This is the LED pilot light (or LED indicator) circuit. LEDs (Light Emitting Diode) part are interesting things. They only…
Here is the circuit diagram of lantern dimmer / flasher designed by Tony Van Roon: There are two circuit modes:…
The following is LED Flasher circuit which use 2 transistors for LED switching. The circuit works similar to flip-flop operation.…
Here the simple mic pre-amp circuit design based on single IC LM358. The circuit is very simple, inexpensive and easy…
Here the circuit diagram of Maestro Boomerang pedal / Wah-Wah pedal for electric guitar effect. Note: Transistors Q1 and Q2…
Designed by Don Tillman, this guitar pre-amp circuit design is dedicated for people who don"t like op-amps module. This circuit…
This is probably become the simplest radio frequency RF transmitter that you will find anywhere. It has a total of…
Here the simple mixer circuit with 4 inputs and 2 operational amplifier (op-amp) modules: A basic mixer suitable for mixing…