This circuit without sensors in series triggering an SCR was found in volume 5 of the 1995 Encyclopedia of Electronic Circuits. The circuit can have the number of sensors changed.
We found this complementary simetry configuration in a1980s documentation. Transistors, which are...
Found in a 1968 Motorola documentation, this circuit operates at 1 kHz and can deliver 20 V from...
This circuit was found in an English magazine from 1976. The transistors can be the BC548. The...