Institute Newton C. Braga

Circuit Bench

Monostable with comparator (CB5430E)
In the figure we have the way to implement a monostable with a comparator 139, 239 or 339. The...
2-Transistor Receiver (CB18845E)
The circuit shown was found in a Japan publication from the 1960s. The transistors can be of any...
Battery charger (CB9127E)
Found in a radio amateur magazine of the 1980s, this circuit uses components that can still be...