Low ripple power supply


Posted on Aug 17, 2012

This circuit may be used where a high current is required with a low ripple voltage (such as in a high powered class AB amplifier when high quality reproduction is necessary), Ql, Q2, and R2 may be regarded as a power darlington transistor. ZDl and Rl provide a reference voltage at the base of Ql. ZDl should be chosen thus: ZDl = Von-1


Low ripple power supply
Click here to download the full size of the above Circuit.

C2 can be chosen for the degree of smoothness as its value is effectively multiplied by the combined gains of Q1/Q2, if 100 µF is chosen for C2, assuming minimum hfe for Ql and Q2, C = 100 x 15(Q1) x 25(Q2) = 37,000 µf.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Function generator
Personal-pocket-pager
Transmitting audio over laser or LED
making multi function water level
simple short wave transmitter
heart rate monitor schematics
Serial To Parallel Converter
Mini 100 Mbit Ethernet integrates microcontroller
Vladimir Utkins Free-Energy Secrets
Im trying to repair a Samsung SCR-3000 DVR COMBO for my security
The LM3886 BTL amplifier



Top