Institute Newton C. Braga

Circuit Bench

Heartbeat generator 555 (CB25992E)
This circuit mimics the heartbeat with the softest sound played through a small speaker. The...
2W lamp driver (CB20720E)
This circuit for 12 V x 2.2 W lamps was found in a documentation from the 70's. The circuit uses...
RIAA LM318 Pre-Amplifier (CB14379E)
The LM318 is not a common component today. The circuit is suggested by National Semiconductor in...