AC voltage control (CB8904E)

This circuit was found in a 90s Hands On Electronics. The semiconductor component is a Triac of the time.

Joystick with Potentiometers (CB16015E)
Two potentiometers mounted at right angles, so that they can be operated by a lever, form a very...
Logic Control 555 (CB13832E)
The purpose of this modified astable is to make the initial pulses have the same duration as the...
Electric fence (CB6231E)
This circuit was found in an American 80's circuit board. The components used are current except the...