This circuit with 117 V output was found in a 1969 Electronic Design. Drive transistors admit equivalents and information about transformers is not given.
This circuit was obtained from an 80's documentation from General Electric. The circuit uses an...
July 2017 - The new Surface Mount SM0402xx LEDs from Bivar can be found on Mouser. The new...
Found in a 90s American documentation, this circuit that was used in cars of the time, detects low...