This circuit divides the frequency of a 2 kHz signal by 2. The circuit was found in Philips documentation from 1964. Modern transistors can be used for higher frequencies.
This circuit is from 1968 General Electric documentation. It can certainly be adapted for any...
This tester from a 1960 magazine is only for capacitors with insulation voltages above 200 V (110...
Found in a 1991 publication this circuit can be assembled with more modern components. We can use...