Debouncer (CB20546E)

This anti-ringing circuit was found in an English documentation from 1996. The integrated circuit is the 74LS14.

Unit Gain MOSFET Amplifier (CB6128E)
This Hughes circuit is from 1968. Equivalent modern components can be used. The input impedance is...
Moisture Detector (CB5367E)
We found this circuit in an 80's Radio Shack publication. The circuit uses a company buzzer, but...
0.5 W Transistor Audio Amplifier (CB233E)
This basic amplifier using complementary transistor in the output sources about 0.5 W of good...