Tube Power Source (CB6743E)

This circuit is from a high voltage tube source. It does not include the filament voltage that must be supplied by a separate transformer.

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Monostable Optical Shield II (CB16926E)
A new monostable optical shield configuration is shown below. The time in which the output signal is...
Transistor triac trigger (CB21478E)
Two transistors on a regenerative switch are used to trigger a triac. This circuit is from the RCA...
Microphone Amplifier 741 (CB13714E)
This experimental circuit was obtained in a Radio Shack documentation from 1977. The transistor can be...