Microcontroller controlled dimmer (CB25087E)

This circuit was found in a Radio Electronics magazine from October 1987. It can be used as a shield for incandescent and heating elements.

| Clique na imagem para ampliar |

Mid Treble and Bass Control (CB13201E)
This circuit was found in an old American publication. The integrated circuit used is no longer easy...
Precision Current Source (CB24752E)
Using a transconductance operational amplifier, this circuit was found in July 1983 Radio...
Electroluminescent emergency light (CB23805E)
This battery-powered emergency light circuit was published in an April 1962 Radio Electronics...