This SCR relaxation oscillator was found in an 80's Electronic Design. It flashes a small incandescent lamp in frequency that depends on the capacitor.
This circuit has a start and reset switches and can generate signals at long intervals determined by the...
This circuit has both frequency and duty cycle control. We found it in the October 1992 Radio...
General Electric suggests this circuit in an 80's documentation. The circuit makes use of PUTs...