Desired Beta for regulator pass transistor.
In a low current, low noise, series voltage regulator. Is it better to use a low or high beta pass transistor? I can see it two different ways.
-Low beta will be more resistant to noise generated by the voltage reference.
-High beta transistors will pass less supply ripple through, since they tend to have a higher dynamic impedance.
So which one ultimatly gives you a quieter output without using a feedback servo circuit?
I can't see any advantage at all to use a low beta transistor but what did you have in mind really and which noise levels?
|All times are GMT. The time now is 12:47 AM.|
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio