Simple dimmer (CB7043E)

This two-power dimmer appears in several articles on our website. This is from Popular Electronics and should not be used with electronic devices.

Ultra High Gain Amplifier (CB4940E)
This setting appears elsewhere in this section. This was obtained from an American 1980s...
PWM Motor Control (CB251E)
This speed control for small DC motors can operate from 6 to 12 V sources. The motors can drain...
Sine to square converter (CB7184E)
We found this circuit in a 1964 Electronic Design. Transistors can be modern general-purpose...