Institute Newton C. Braga

Circuit Bench

Simple timer (CB23641E)
For times in the range of seconds to a few minutes we found this timer with the CK722 in a Radio...
NTC Simple thermostats (CB15788E)
The two circuits shown trigger relays with temperature variation, the first being the type that...
Simple Audio Mixer (CB12330E)
I found this circuit in an old document from 1981. The circuit can be implemented today with the...