Circuit diagrams and schematics - Electronic projects

In this 2-7V power supply circuit, for our purpose, we chose IC 723 instead of a three pin voltage regulator forwhy we find it protean and more advantageous in technical details. Heatsinks of Tr2 and Tr3 transistors must be sufficiently large. To achive R4,R5 and R6 values, we used some suitable resistors in parallel. For [...]

This power supply is designed for general purpose use. Advantages of the circuit are first the voltage can be adjusted from 0V to greater and second it does not require a double sided secondary winding transformer. For high voltage outputs you can use L146 or alternatively if you need lower voltage outputs you can use [...]

THE HEAVY CURRENT carrying connections are shown in bold in Fig 1. The mains input passes through an EMC filter, protection fuse F1 and ON/OFF switch S 1 to transformer TI. The secondary output of TI is rectified by D I but cannot pass through open relay contacts RL1a. To start the PSU switch, S2 [...]