Institute Newton C. Braga

Circuit Bench

Light change detector (CB22058E)
This circuit only detects variations in light falling on the sensor. The circuit uses an LM380 as a...
30 W Transistor Amplifier (CB23659E)
This circuit was obtained from an old publication from 1974 but can still be assembled with some...
1 kHz Astable 4001 (CB24339E)
We found this circuit in the November 1974 Radio Electronics magazine. The frequency depends on C1...