Institute Newton C. Braga

Circuit Bench

Transient Protector (CB24761E)
This circuit was found in the September 1983 issue of Radio Electronics magazine. The relay is...
13 V x 2 A power supply (CB13632E)
This circuit is from an old documentation but can be implemented with a BD136 for Q1 and 2N3055 for...
Regulated 5 V Power Supply LM309k (CB20195E)
This power supply that we found in an old American documentation uses an integrated circuit that...