Preheating circuit (CB7187E)

This circuit was found in a General Electric manual from 1970. Its purpose is to provide a preheat to a filament lamp.

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AC Triac latch (CB7237E)
This circuit is suggested by a 1965 General Electric documentation. The triac must be in...
Transmitter for the 2 meter band (CB4049E)
We found this circuit in 1980s documentation. It can be used independently as CW or by exciting a...
100 MHz Oscillator (CB6187E)
This 80's Motorola circuit can generate 100 MHz signals, but they can reach 200 MHz with the...