Universal power control (CB8709E)

This circuit was found in a 90s Popular Electronics. The circuit uses several relays in order to obtain different controls for power loads.

| Clique na imagem para ampliar |

Neon Head or Tail (CB11579E)
Pressing and releasing S1 remains one of the neon lamps. Which one will be, it is not possible to...
LED VU LM3914 or LM3915 (CB17494E)
This circuit, which appears on our website in different versions, uses an integrated VU which is...
Voltage Controlled Amplifier (CB25145E)
This VCA was found in the July 1988 issue of Radio Electronics magazine. It uses an OTA op amp and...