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Multiple client PSU
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Old 21st December 2009, 09:21 PM   #1
fastasulike is offline fastasulike  France
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Default Multiple client PSU

I am currently putting together a multiple client PSU, that will supply unregulated power for the pre and power amps and also a DAC. Each client will have its own transformer and PSU.

The main question I have is one of switching the PSU on. I was going to have a separate switch for each of the clients and was wondering if 240VAC switches directly on the supply in would be ok, or if it would be better to have some sort of relay system?

In addition, what are the inherent problems, if any, of such a method of providing power?

Ultimately, I guess I'm asking what the best method is, for switching the unit on and off.

Power amp will have four 120VA transformers by the way.
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Old 22nd December 2009, 06:17 AM   #2
wwenze is offline wwenze  Singapore
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Some countries' electrical sockets are all switched, no relay required. So I guess there's no problem with that.
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Old 22nd December 2009, 03:54 PM   #3
Pano is online now Pano  United States
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Multiple client PSU
Separate 240V switch on each section sounds like a good idea to me.
Relays just add complication. Why would you want them?
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Old 22nd December 2009, 04:09 PM   #4
AndrewT is offline AndrewT  Scotland
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Default nice to have

A master on/off in one or all of your sources.
When any master comes on the remainder follow, bringing on pre-amp and power amps. You could delay the slave relays so that power comes on last.

When the last source is switched off then the whole system shuts down.
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Old 22nd December 2009, 06:06 PM   #5
fastasulike is offline fastasulike  France
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Quote:
Originally Posted by AndrewT View Post
A master on/off in one or all of your sources.
When any master comes on the remainder follow, bringing on pre-amp and power amps. You could delay the slave relays so that power comes on last.

When the last source is switched off then the whole system shuts down.
That sounds like quite an idea, I like it....a lot.

It's either that or some kind of Battlestar Galactica front panel, packed full of switches and all LED'd up.
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Old 23rd December 2009, 09:45 AM   #6
AndrewT is offline AndrewT  Scotland
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esp has some circuits that would help with master and slave and auto on off.
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