Institute Newton C. Braga

Circuit Bench

3 transistor radio (CB18405E)
This receiver, called Peace, was manufactured in the 1960s in Japan and was powered by a 9 V...
Timer 555 (CB14011E)
This traditional version of timer was found in an old English publication. The relay must be of a...
Amplifier for Telephone Pickup (CB988E)
The purpose of this circuit is to amplify the signal of a phone pickup and to be able to reproduce the...