Basic Latch (CB7981E)

This circuit can be applied to several logics. The circuit is from an Electronics Now from the 90s, using two push-buttons.

Ultrasonic repellent (CB20812E)
This repellent operates with frequencies from 30 to 45 kHz, serving for insects and rodents. The...
Monostable CMOS (CB15921E)
The circuit shown in the figure trips with a short positive pulse at the input and produces a high...
Commercial Turntable Amplifier (CB12863E)
This is the circuit of an amplifier for a small record player or portable electrola powered by...