Three-rail-power-supply


Posted on Mar 16, 2013

This circuit generates three supply voltages using a minimum of components. Diodes D2 and D3 perform full-wave rectification, alternately charging capacitor C2 on both halves of the ac cycle. On the other hand, diode D1 with capacitor C1, and diode D4 with capacitor C3 each perform half-wave rectification. The full-and half-wave rectification arrangement is satisfactory for modest supply currents drawn from -5 and +12-V regulators IC3 and IC2.


Three-rail-power-supply
Click here to download the full size of the above Circuit.

You can use this circuit as an auxiliary supply in an up-based instrument, for example, and avoid the less attractive alternatives of buying a custom-wound transformer, building a more complex supply, or using a secondary winding, say 18 Vac, and wasting power in the 5-V regulators.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Rf probe for vtvm
LED Hat Display with Pong using an Arduino
Echo Bender V2
Ultrasonic Surveillance Bug circuit
audio level meter circuit using lm3915
Gas Leak Detector Circuit
12V Speed Controller/Dimmer
ds1820 interfacing with avr slicker
MS51C61 holiday lights ASIC circuit
Electronic mousetrap power-saving circuit
35W switching power supply circuit having a set-top box output of 5
8 NC temperature adjustment



Top