This stabilized source can supply currents up to 700 mA and the output voltage is close to 15 V. a little less with the load. The power transistor must have a good heat radiator.
This circuit was found in an Electronic Design from the 90s. The integrated circuit is from that...
This circuit is from a 1980 publication. In it we have a half-wave power control in which the SCR...
We found this circuit in a Radio Electronics from February 1966. The transistor is from the time...