Institute Newton C. Braga

Circuit Bench

Crossing Signal For Railroad Modeling 3 (CB3856E)
This circuit uses two sensors that are placed at the intersection of a miniature railroad, causing the LED...
Impedance matcher (CB12761E)
Many oscilloscopes have high impedance inputs that make it difficult to observe high frequency signals...
Intercom (CB23640E)
This wired intercom circuit was found in a March 1965 Radio Electronics. The circuit uses two...