Say I needed (-10V, 0, 10V) 50mA for a preamp. I have my eyes on
2 x LT3045. These are DC/DC.
2 x Mean well 12v
1) Would that work? Would it make sense performancewise for the money compared to alternatives?
2) Would the LT3045 output noise be any lower if I supply it with lower noise? Or is the noise (more or less) constant no matter what I feed it with?
3) Would 1 of the Mean wells be enough? I guess not.. could a dual supply or similar be used instead?
4) Do I need to input voltage to a LT3045 slightly (0.3V - 3V if I remember) above the output voltage, or can I for example input 5V and get 10V out?
5) Would it be a good idea to keep all smps's for my gear (preamp, dac etc) in a separate enclosure 0.5-1.0m away, and have them feed the individual gear wherein the ultra low noise regulators would reside?
I am thankful for any input😱
2 x LT3045. These are DC/DC.
2 x Mean well 12v
1) Would that work? Would it make sense performancewise for the money compared to alternatives?
2) Would the LT3045 output noise be any lower if I supply it with lower noise? Or is the noise (more or less) constant no matter what I feed it with?
3) Would 1 of the Mean wells be enough? I guess not.. could a dual supply or similar be used instead?
4) Do I need to input voltage to a LT3045 slightly (0.3V - 3V if I remember) above the output voltage, or can I for example input 5V and get 10V out?
5) Would it be a good idea to keep all smps's for my gear (preamp, dac etc) in a separate enclosure 0.5-1.0m away, and have them feed the individual gear wherein the ultra low noise regulators would reside?
I am thankful for any input😱
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I use LT3045 based PSUs fed by Meanwell similar to what you linked to. This works very well in my opinion. I have also used clip-on ferrit on the DC lines between MW and reg.
You need 1 MW for each LT stab i.e 2 pcs. Keep the MW separated and in order to get a +10/0/-10 volt psu, connect + on one LT to ground on the other LT. I would recommend separate enclosures with distance. Reg close as possible to load - yes.
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You need 1 MW for each LT stab i.e 2 pcs. Keep the MW separated and in order to get a +10/0/-10 volt psu, connect + on one LT to ground on the other LT. I would recommend separate enclosures with distance. Reg close as possible to load - yes.
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Thanks TNT. I've gotten a bit afraid of what noise the meanwells put back on the line, all my audio gear has to be on the same 230V string. But all gear is going to use smps, it seems. I've also bought cheap ferrit cores on Aliexpress, using them everywhere just to be to be precautious 🙂
Do you know if I in principle could input 5V to those LT3045, and get 10V out?
Also thanks Cacao Ambiance, although I don't understand how to use that for my purpose (if you mean to replace the LT3045 only that one is in another league to my understanding).
Do you know if I in principle could input 5V to those LT3045, and get 10V out?
Also thanks Cacao Ambiance, although I don't understand how to use that for my purpose (if you mean to replace the LT3045 only that one is in another league to my understanding).
yea use one of them instead, the 2rd link is set for ±15v but the seller has other versions of it set to other voltages, likely there is one nearer to ±10v. i need to try it out , so i cant quite encourage its use.
they seam to be alright, i think i have tested the 1st one more.
i have ground loop problems currently...
dc-dcs i think are over worried about. theres crappy ones and better ones. for sensitive stuff more work is needed. idk linier reg in series seams to help :/ in some cases. idk what im doing 😉
they seam to be alright, i think i have tested the 1st one more.
i have ground loop problems currently...
dc-dcs i think are over worried about. theres crappy ones and better ones. for sensitive stuff more work is needed. idk linier reg in series seams to help :/ in some cases. idk what im doing 😉
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If your preamp would tolerate 15v you can check out the silentswitcher. It can be powered by 5v input. The creator is collecting feedback for a configurable output version so if you can wait he might make a 10v version.
The LT3045 requires higher input voltage than the output, so you can't use it to step-up.
Another member on this forum (OlegSh) has a board that has space for 2 MW IRL series supplies and steps down the voltage to a configurable output, he spent quite a bit of effort to tune the board for minimal noise at the output, he's not using the LTs but another regulator that's pretty close on the noise.
The LT3045 requires higher input voltage than the output, so you can't use it to step-up.
Another member on this forum (OlegSh) has a board that has space for 2 MW IRL series supplies and steps down the voltage to a configurable output, he spent quite a bit of effort to tune the board for minimal noise at the output, he's not using the LTs but another regulator that's pretty close on the noise.
Thanks! I was the first to vote for the uni-silentswitcher ;-) But I guess it won't be for sale with so few interested; also as far as I can see the mentioned voltage adjusting smd-resistors are 3mm long, which I am not even sure I can solder. I'll check the other options
Oops, my mistake, Oleg's board uses a DC- DC converter fed by 5v DC supply DC-DC converter based PSU for line level applications
No - a regulator (LT3045 etc) looses some (0,5-1V) voltage in order to do it's thing - so always lower than input.
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