Simplest RF Transmitter

55 years ago

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

Simple Mixer 4 Input

55 years ago

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

A/B Box Switch 2 Inputs 1 Output with Dual Op-Amps

55 years ago

This is a A/B Box switch pedal schematic with two inputs and one output and featured with dual operational amplifier…

Very Simple Radio Control (R/C)

55 years ago

Above diagram is a very easy and efficient receiver for actuating garage doors, starter motors, alarms, warning systems and many…

Distortion Booster

55 years ago

The following circuit is an distortion booster effect for your electric guitar. I don't know whether this circuit is really…

NAND Gate Clock Generator

55 years ago

The following scheme is the clock generator circuit diagram which build based on NAND Gate logic IC. You may use…

6A / 0-28V Variable Power Supply

55 years ago

The following diagram is the schematic diagram of variable power supply which will deliver 0 to 28V output voltage at…

6V Gel Cell Battery Charger

55 years ago

The following scheme diagram is the battery charger circuit for 6V Gel Cell battery type only. Components List: R1 =…

FM Receiver Antenna Amplifier

55 years ago

This is the active FM receiver antenna amplifier, used to boost the FM signal catch by the antenna, you may…

Simple Electronic Combination Lock

55 years ago

The following diagram is a very easy and simple electronic combination lock based on IC LS7220. Component Part List: C1…