FETs based Micro-Spy

This is Micro-Spy circuit which designed using FET components.. Circuit Notes: (more…)

55 years ago

LED Pilot Light using FET

This is the LED pilot light (or LED indicator) circuit. LEDs (Light Emitting Diode) part are interesting things. They only…

55 years ago

Lantern Dimmer and Flasher

Here is the circuit diagram of lantern dimmer / flasher designed by Tony Van Roon: There are two circuit modes:…

55 years ago

LED Flasher 2-Transistors

The following is LED Flasher circuit which use 2 transistors for LED switching. The circuit works similar to flip-flop operation.…

55 years ago

Simple Mic Pre-Amp based LM358

Here the simple mic pre-amp circuit design based on single IC LM358. The circuit is very simple, inexpensive and easy…

55 years ago

Maestro Boomerang Pedal

Here the circuit diagram of Maestro Boomerang pedal / Wah-Wah pedal for electric guitar effect. Note: Transistors Q1 and Q2…

55 years ago

Guitar Pre-Amp with JFET 2N5457

Designed by Don Tillman, this guitar pre-amp circuit design is dedicated for people who don"t like op-amps module. This circuit…

55 years ago

Simplest RF Transmitter

This is probably become the simplest radio frequency RF transmitter that you will find anywhere. It has a total of…

55 years ago

Simple Mixer 4 Input

Here the simple mixer circuit with 4 inputs and 2 operational amplifier (op-amp) modules: A basic mixer suitable for mixing…

55 years ago