Institute Newton C. Braga

Circuit Bench

TTL Schmitt Trigger 7400 (CB13777E)
In the figure we have the way to implement a TTL Schmitt trigger for 60 Hz signals, obtaining...
Magnetic Lock with Code Switch (CB16709E)
This circuit is from an old documentation, but as it only uses common transistors even today, its...
Wire Finder (CB21301E)
Found in an Electronic Hobbyist Handbook from the 1990s, this circuit is intended to apply a...