Institute Newton C. Braga

Circuit Bench

Shunt Regulator TL431 (CB14547E)
This circuit uses an unusual Motorola voltage reference. Other manufacturers also provide this...
3-Transistor Amplifier (CB21858E)
Found in the 1974 Ferranti transistor manual, this circuit uses components from the time,...
Field Strength Meter (CB22329E)
This simple field strength meter is from a transistor book from the 60's. The transistor is made...