This circuit was found in a 90's Electronic Design. The circuit can be adapted to use modern components. The power supply is made with 5 V which allows its use as a shield sensor.
The components of this circuit are exchanged for modern equivalent such as 470 K for the pot and...
This trigger uses two transistors having been found in ancient French documentation. The circuit is...
This is a simple converter or source configuration using an ordinary incandescent lamp as a...