Toggle Switch with IR

Toggle switch in this article is a series of toggle switches that are controlled by infrared light. The series toggle switch is made from a ...

Transceiver Homebrew QRP SSB 80M Band

Radio communication transceiver is a radio transmitter at the same time the plane doubles as a radio receiver used for communication purpose...

Combine stereo input to one output

Here , I will give a circuit of schemes that are used to combine 2 pieces input or stereo to 1 input mono. Why 2 inputs in to one because, i...

Addition variable gain amplifier

Variable gain above is a circuit that is used to increase signal strength in dB , needed in a circuit of gains if the range is less reinforc...

Low-Noise operational amplifier.

Low noise balanced input is can also call for the circuit schematic above , because it has a very small noise output and balanced on each in...

High-pass and low-pass filters

Subsonic and ultrasonic filters can be combined into a single circuit for more stable and orderly bandwith. This good and qualified for only...

Tone control mono circuit with C828 / C945

This is mono circuit tone control , include adjusting bass , trebel , and master volume. Minimum voltage require 15 volt and maximum voltage...

Master mixer circuit with one potentiometer

This circuit is used for controlling the volume of output  and then entered the mixer, but this circuit not only as the volume setting. This...