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Old 31st July 2011, 02:57 PM   #81
Salas is online now Salas  Greece
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Quote:
Originally Posted by Franz Gysi View Post

BTW, Salas: how much current does my 15mA RIAA consume, what would be a correct load resistor to test the psu?

Franz
~35mA per channel. 560R 10W for simulating both channels draw and holding well at 3.6W self absorbing dissipation. 5W if you will be rather quick. Don't rest the dummy on something nylon or paper.
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Old 31st July 2011, 03:01 PM   #82
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Thanks

I will use a 620R / 5W resistor.

Franz
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Old 31st July 2011, 03:04 PM   #83
Salas is online now Salas  Greece
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Sufficient.
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Old 31st July 2011, 03:07 PM   #84
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Quote:
Don't rest the dummy on something nylon or paper.
Smile (or smell ?)

No, I don't

I prefer different kind of smoke

Franz
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Old 31st July 2011, 03:11 PM   #85
Salas is online now Salas  Greece
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What make is the big filter 6800uF PSU cap?
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Old 31st July 2011, 03:16 PM   #86
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Quote:
What make is the big filter 6800uF PSU cap?
It is branded "Marcon"

When I remember correctly, I unsoldered it out of an never used Studer smps.

I think for the first fire up, I will use a reduced voltage (not 36VAC) from this test-tranny (the device on the left), to not exceed the limits of some parts.

Click the image to open in full size.

Franz

Last edited by Franz Gysi; 31st July 2011 at 03:20 PM.
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Old 31st July 2011, 03:19 PM   #87
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It has a 32VAC configuration too I see. Practical thing. Not a variac, multitap. Fully isolated? Not autoformer?
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Old 31st July 2011, 03:25 PM   #88
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Quote:
It has a 32VAC configuration too I see. Practical thing. Not a variac, multitap. Fully isolated? Not autoformer?
Indeed, a very practical thing.

Yes, it is fully isolated, not an autoformer. It is a "normal" 230V primary tranny inside with two double tapped 16VAC secondaries.

I purchased it on a flea market, some time ago.

Franz

Last edited by Franz Gysi; 31st July 2011 at 03:28 PM.
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Old 31st July 2011, 03:29 PM   #89
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OK. Good luck with testing. Let us know how it went.
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Old 31st July 2011, 03:37 PM   #90
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Yes I'll let you know.

But for today: I am sitting and enjoying a beer now, listening to my Quad ESLs. Tom Waits.

Tomorrow is a holiday in Switzerland and I will safely continue tomorrow, waking up the neighbours drilling holes in a heathsink

Franz
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