Found in a 90s QST magazine, this circuit uses components from that time. No information is given about the transformer.
Found in a publication from the 60's, this power supply has no regulation, but only current...
This circuit for a 6.3 V lamp was found in a 1970’s RCA documentation. The circuit applies to any triac...
This circuit is based on Maxim's MAX038, consisting of a complete function generator. The circuit is...