Institute Newton C. Braga

Circuit Bench

Audio Noiseless Switch (CB13699E)
This circuit was obtained from the Audio Handbook of the National Semiconductor of 1977. We can...
CMOS Latched Alarm (CB25948E)
This simple latching alarm circuit using CMOS gates was found in the May 1990 Radio Electronics magazine....
One push button on off switch (CB7199E)
This circuit turns a lamp on and off with alternate touches of a switch. Modern Darlingtons can be used....