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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: I'd consider soft recovery diodes... posted by Tweaker456 on July 16, 2014 at 13:56:23:
Hi and thanks for the suggestion.
Speaking of preamps i have some ideasFor instance i think that if i have to build a preamp i would take out the mains transformer from the preamp chassis.
I would leave inside only the diodes bridges and i would use a huge amount of capacitance after the diodes.
Like the preamp can go on singing for a minute or so after disconnecting it from the mains.
Then i do not like very much toroidal ... i prefer EI transformers even if the circuit is not digital but analog.
But without a clear schematic is difficult.The current diodes i understand are of the lowest grade
Almost anything would be better.And those cheap caps ... so close one to another ...
I would have double the uF immediately but there is no space
What a pity.
More uFs improve everything ... they decrease noise and impedance and creates a bigger energy reservoir.
I would have put them closer to the amp circuit ... like i have seen in some amps to reduce the distance between the caps and the active devicesI still think that batteries is the way to go anyway for a PS for preamp.
And the all circuit looks to me a little complex for just a line preamp.
I have had a line preamp with just one mosfet ...
So maybe something in between would be the optimum ?Thanks again.
Kind regards,
bg
Edits: 07/16/14
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Follow Ups
- RE: I'd consider soft recovery diodes... - beppe61 23:03:04 07/16/14 (0)
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