This circuit supplies a voltage of 42 V, plus a symmetrical voltage of 12 V with 1 A. The voltage regulators must be mounted on heat sinks. The transformer is 35 + 35 V with 3 A.
This circuit is from a 90's Radio Electronics. The circuit operates accurately up to about 15 kHz...
This circuit is from a 1980s Signetics documentation but is valid for modern operating. Next to...
This circuit from a 1979 publication uses FETs which can be BF245 and integrated circuits, unlike...