This circuit is used to turn on the headlights when it gets dark. The circuit is from an Electronics Now magazine from October 1998. The power transistor must be equipped with a heatsink.
This circuit is from a 1967 publication. It is possible to power a fluorescent lamp from a 12 V...
This circuit was found in old American documentation. Transistor is general purpose and coil rated...
With a strong positive feedback (via a 10 M resistor) we can get the trigger setting for the...