Sawtooth generator (CB21338E)

This op amp circuit is based on a 555 IC and two common op amps. Transistors are general purpose.

Overtemperature Alarm (CB26158E)
This circuit was found in the Electronics Experimenter Handbook from 1991. The sensor is a diode...
Photodiode P Receiver (CB11905E)
This circuit can be used on audio, video, or data links to receive modulated infrared signals. The gain is...
AM Modulator 78xx (CB15167E)
With this circuit it is possible to obtain a voltage modulated in amplitude with a maximum current of...