We found this circuit in the Radio Electronics magazine of May 1977. The transformer voltage is 6 + 6 V, and the current depends on the zener diodes and is in the order of 100 to 200 mA.
This circuit was obtained from a Linear Technology manual from the 1990s. The components may have...
The circuit shown uses the LM324, but can be implemented with other operational ones. The source...
Originally created to power an 80's RTTY printer, this circuit can be used in other applications. The...