Found in a magazine 73 for radio amateurs of the 90s, this circuit converts a continuous voltage and another continuous voltage, but with insulation between the circuits.
This filter, from an audio publication from 1977, passes the frequency range corresponding to the...
In the figure we have three voltage doubler configurations that can be used in high and low...
This circuit was found in Motorola documentation from 1966. The lamps are according to power and...