Found in a 1969 neon lamp publication, this circuit provides two voltages under very-low currents. Neon lamps are types of the time.
This circuit was obtained in a 1967 General Electric manual. The circuit applies to other triacs....
Found in an October 1992 Radio Electronics magazine article, this circuit generates a low-power tone in...
This circuit was obtained from an American 80's documentation. The operational ones can be...