This constant current source for high voltage loads was obtained from a 1967 General Electric documentation. The components are of the time, but allow equivalents.
A fourth version of a non-retriggerable monostable is shown in Figure. It is triggered by the...
This simulated circuit on the NI Multisim transmits modulated infrared signals with the audio...
This circuit is from an American documentation from the 90's. The SCR can be of any type and the...