hsnam
New Head-Fier
- Joined
- Jun 22, 2001
- Posts
- 27
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- 0
hi all,
I have recently built a +/-16V power supply to use with Kevin Gilmore's discrete dynamic headphone amp. It utilizes LM317 and 337 to regulate down from a 24VDC, ~0.8 A supply. When the volume is low, the amp sounds fine, but if i play it too loudly, then the power supply seems to shut off. i can only get the amp to work if i power cycle the supply.
the amp should draw no more than 200-300 mA, if I remember KG's comments correctly.
so what's the problem? LM317/337 are heatsinked, but perhaps i need a larger heat sink? how do i test?
thanks!
once i have time, i shall design a PCB for KG's ultrareg PS and build one...
I have recently built a +/-16V power supply to use with Kevin Gilmore's discrete dynamic headphone amp. It utilizes LM317 and 337 to regulate down from a 24VDC, ~0.8 A supply. When the volume is low, the amp sounds fine, but if i play it too loudly, then the power supply seems to shut off. i can only get the amp to work if i power cycle the supply.
the amp should draw no more than 200-300 mA, if I remember KG's comments correctly.
so what's the problem? LM317/337 are heatsinked, but perhaps i need a larger heat sink? how do i test?
thanks!
once i have time, i shall design a PCB for KG's ultrareg PS and build one...