This simple circuit consists of a blinker for a very low consumption neon lamp, found in a 1982 documentation. The circuit can be powered by 110 V for 1N4004 diodes or 220 V for 1N4007 diodes.
Found in a 90s ARRL Handbook, this circuit is intended for the production of signals in the side...
This is the circuit of a hearing aid amplifier manufactured by Sony in the 1960s. The circuit was...
This variable frequency oscillator generates signals that have a recurrence frequency determined by...