Found in a 90s documentation, this circuit triggers the SCR when there is an overvoltage in order to cause the fuse to blow quickly. The SCR can be a TIC106.
Found in an Electronic Design from the 90's, this circuit uses common components. The circuit is...
When the sensor receives light, the relay closes its contacts and remains so even after the light...
This circuit produces pulses of 90 V at intervals that can reach 5 minutes. The circuit is from a...