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.
With the circuit shown, you can have a fast response with a Darlington configuration. The circuit is...
We found this multiple thermostat circuit in July 1980 Radio Electronics magazine. It uses...
Mouser Electronics is already providing new MOSFETs EF SIHx28N60EF of Vishay series for voltages...