This circuit was found in a Radio Electronics from 1970. The coupler with LDR is from that time, but the circuit can be adapted to use modern components and act as a shield.
With this circuit it is possible to divide the frequency of a rectangular signal by values between 2...
This circuit was obtained from the Encyclopedia of Electronic Circuits volume 5 of 1995. The...
This circuit can supply output voltages from 50 to 250 V from an input voltage of 300 V. The...