1500W heating control (CB21379E)

This circuit was obtained from a 1967 GE SCR manual. The SCRs must be rated for the wattage of the controlled heating element.

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4046 oscillator (CB9221E)
This oscillator with the PLL 4046B was obtained from a 90s Radio Electronics. The circuit...
Crowbar (CB8361E)
This protection circuit trips by quickly blowing the fuse in the event of an overcurrent. The circuit is...
Complete FET Test (CB19255E)
This circuit is intended for the testing of junction FETs, providing several reading options...