wanted: suggestion for a low noise regulator circuit.

Status
Not open for further replies.
Jump to Latest
R

Raj1

Member
Joined 2003
#1
Hi,

I'm after a low noise regulator circuit which I can build at home. I want a circuit that is small and can be fitted inside my dac easily, taking up a minimal amount of space. There are 2 dacs each requiring there own +5v supply and also a pre 12v regulator.. At present 7805's are used, but I'd like a supply which offers lower noise than usual 317's etc. I know there are pcb's available for various designs but have shunned them on grounds of cost, considering I'm after 3!

Thanks
Raja
 
#2
I'm writing a series for TNT covering just that. Drop me an email at werner @ tnt-audio.com and I'll forward you the first installment which deals with measured noise in five types of regulators.

http://www.tnt-audio.com/clinica/regulators_noise1_e.html


system_adc_noise.gif
 
#6
I have used buffered and filtered low-noise voltage reference as a supply for analog stages of my latest DAC. Nice thing about this implementation is that the power feed point is out of the feedback loop at audio frequencies - the supply looks like a passive RC source to the load. The opamp buffer is configured as a shunt regulator in my circuit, although series regulator is more common.

Burr-Brown has instructive application notes about this in their voltage reference section...
 
#7
Re: Why not?

Elso Kwak said:

Why not?

😕
Click to expand...


Hi Elso,

What I meant is that do any component values need to be changed for the lower power supply of 5v as compared to 15v?

Also should I bot be able to get the parts (transistors) in the UK can someone recommend plug in alternatives?

Thanks
Raja
 
Status
Not open for further replies.
Top Bottom