The timing steps of this circuit are indicated by a 7-segment display. The circuit was found in documentation from the 90s. The capacitor next to the 555 determines the timing steges.
This loader has configuration already explored in other articles on the site. This is from an old...
Texas Instruments UCC21225A is available from Mouser Electronics. It is an isolated gate driver...
This circuit is from an American 80's documentation. The integrated circuit is from the time and...