Institute Newton C. Braga

Circuit Bench

Variable Output Oscillator (CB16513E)
We found this circuit in a 1998 publication. The circuit has controls for both frequency and...
NAB Preamplifier (CB846E)
This preamplifier is intended for the use with magnetic pick-ups. Power supply must have voltages...
Light Activated AC Switch (CB25875E)
Using a CA3059 this circuit was found in the July 1995 Electronics Now magazine. The triac must be...