Hi!
I made a power supply for tube circuits (low voltage, from 1.27 to 15.50), i'm using LM317 and LM337, but i would like to dropdown the input DC voltage to the regulators from 33V to..say what? 24V?...so the ics would have a better current response, so, how do i drop this voltage down (not a fancy or expensive thing, just need to enter about 24V to the ICS and they would regulate the output voltage)?
Thanks!
how is the input DC generated?
Hi niftyDog!
The AC, "reduced" voltages come from the transformer and then go to a rectifier bridge and then they go to a pair of 4700uF and then enter the regulators
the absolute best way would be to get a transformer with a smaller ratio.
anything else you do is gonna be wasting energy and could potentially generate a lot of heat as well.
You might consider a voltage divider, but there's a lot of pitfalls to consider first. Do you know how much current the power supply is expected to provide?
Quoteso the ics would have a better current response
what exactly do you mean by this?
i found another transformer that helped me a lot more than this one...
anything else would be problematic...
Thanks niftydog!