Circuit Diagram Variable Power Supply. The maximum current can be increased if we add the power transistors needed. 5 volts dc regulator without transformer using mosfet eleccircuit com.
Circuit diagram variable power supply circuit this circuit diagram is given below. As the name suggests a variable power supply circuit provides the user with a range of linearly varying output voltages through a manually controlled potentiometer rotation. Use the 5k potentiometer for the adjustment of voltage and the 10k potentiometer with bd139 transistor for adjustment of current.
R1 2k2 ohm 25 watt r2 240 ohm r3r4 01 ohm 10 watt r7 6k8 ohm r8 10k ohm r9 47 ohm.
Ac variable power supply circuit with isolated voltage 24 volt 5a or adjule ua78g ua79g to high 3v 24v using 7805 1 5v 30v lm317 0 50v ic nine laboratory lab under end bench 12 v dc forum for 9v desktop usb pd rules interface hv constant cur how build simple 15 1a diy make a 220 designing 723 diagram regulator ps 230v s 3a. This transformer step downs the 220v supply to 24v which is then rectified through a bridge rectifier. Input voltage can be up to 40v and output voltage can be adjusted from 12v to 37v. Circuit diagram variable power supply circuit this circuit diagram is given below.