Institute Newton C. Braga

Circuit Bench

High Impedance Differential Amplifier LM324 (CB4003E)
This circuit is from the 1990 Motorola Linear Databook. The circuit can be implemented with other...
XTAL 100 kHz calibrator (CB12910E)
This circuit is from an Argentine publication from 1973. It generates a 100 kHz signal from a...
Neon flashlight (CB21737E)
Found in Popular Electronics from 1969, this circuit uses a neon lamp from the time that had...