Described in the December 1969 Radio Electronics magazine, this circuit is intended to supply the previous circuit. The circuit is not isolated from the power grid.
This circuit was found in a Popular Electronics from the 90s. The frequency range generated...
Found in a 80s American documentation, this circuit pulses a lamp for optical relay tests. The...
This is the basic configuration of a voltage comparator with the Norton LM3900 amplifier. The...