This inverter circuit for a capacitive discharge ignition system was found in a Radio Electronics magazine from February 1967. The power transistors must be equipped with heatsinks.
If you have a disused old computer, the type that still has a parallel port, you can use it in...
This circuit triggers on a lamp when the sensor (a metal plate us touched). Up to 100 W...
Suggested by National based on the LM6218, this circuit from the 90s has high speed...