Institute Newton C. Braga

Circuit Bench

Light Activated OR Gate 1 (CB5319E)
This circuit uses two light-activated SCRs or LASCRs, uncommon components today. The power depends on...
500 W low voltage control (CB8862E)
This type of configuration can be seen elsewhere in this section. This is from a 1965 General...
Crystal Oscillator (CB14738E)
Crystals from 100 kHz to 1 MHz can be used in this 1957 Raytheon circuit. 4 can have values...