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 is from 2005 documentation. It automatically starts an irrigation pump when the...
Found in an old Radio Electronics, this circuit uses common components today. The resistors of the IC...
This is a traditional oscillator configuration with the 741 found in a 1980 publication. When...