Power Supply circuits diagram electronics projects

This electronic circuit is designed for stabilize an output voltage between 50 and 250 volts.
Output voltage can be adjusted using potentiometer P with a value of 1M.

Using this circuit diagram can be made a simple circuit that automatically disconnects , the power supply voltage of an electronic device.

Using a TL071 operational amplifier can be made a very simple symmetrical power supply. The symmetrical voltage source may be used if the consumer requires a very low current of the order of several mA.