Simplest RF Transmitter
This is probably become the simplest radio frequency RF transmitter that you will find anywhere. It has a total of…
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…
A/B Box Switch 2 Inputs 1 Output with Dual Op-Amps
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)
Above diagram is a very easy and efficient receiver for actuating garage doors, starter motors, alarms, warning systems and many…
Distortion Booster
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
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
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
The following scheme diagram is the battery charger circuit for 6V Gel Cell battery type only. Components List: R1 =…
FM Receiver Antenna Amplifier
This is the active FM receiver antenna amplifier, used to boost the FM signal catch by the antenna, you may…
Simple Electronic Combination Lock
The following diagram is a very easy and simple electronic combination lock based on IC LS7220. Component Part List: C1…