iampivot
New Head-Fier
- Joined
- Mar 15, 2004
- Posts
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I'm putting a small DAC in the same enclosure as a headphone amp. I'd like to get a regulated 5v (or possible 7v for further down-regulation) from a steps power regulator circuit (with a suitable designed PCB).
I guess I can do this with an 78L05 with additional components, but I'm worried that the unregulated input to it would be too high causing it to become too hot. The steps setup will provide power for an M3 amp, thus the unregulated supply is at about 36v.
Should I rather use an additional LM317 (similar to the steps circuit regulator) and just down-convert the output with suitable resisters, or will a proper 78L05 circuit be able to down-convert from 36v to 5v?
Is there any other good way to get at a low power 5V supply without introducing any more transformers?
I guess I can do this with an 78L05 with additional components, but I'm worried that the unregulated input to it would be too high causing it to become too hot. The steps setup will provide power for an M3 amp, thus the unregulated supply is at about 36v.
Should I rather use an additional LM317 (similar to the steps circuit regulator) and just down-convert the output with suitable resisters, or will a proper 78L05 circuit be able to down-convert from 36v to 5v?
Is there any other good way to get at a low power 5V supply without introducing any more transformers?