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Old 17th June 2003, 06:58 PM   #11
mikelm is offline mikelm  England
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Quote:
Originally posted by JOE DIRT®
maybe I`m not reading his schematic properly but his + and - on the bridges are connected
That's OK, that's the ground...

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Old 17th June 2003, 07:52 PM   #12
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Quote:
Originally posted by JOE DIRT®
your rectifiers are not wired properly...you have a dead short right now on the secondaries
It is correct! But I would suggest that you only connect ONE primary winding (is it 120 V?) and test. And do the same thing with other one. If you get correct voltage bot times, you have for sure connected the primary windings wrong. In that case, just flip one winding. It's safe to connect only one winding as long as you have less than half the rated load but I suppose you have only smoothing caps as load?
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Old 18th June 2003, 03:38 PM   #13
raffir is offline raffir  Canada
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Default What I'm going to do

I'm going to try testing it with only one bridge rectifier and pair of secondaries hooked up (I'll use the other two as 0v) as suggested on the Decibel Dungeon. I've had success before, the only problem was that the music would play for a moment only to be replaced by a buzzing sound, or sometimes nothing at all. Incidentally, the "Gainclone" I've been using is K50 as shown at http://www.kitsrus.com/pdf/k50.pdf
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Old 20th June 2003, 06:25 PM   #14
raffir is offline raffir  Canada
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Default Ground

Hooking up 115-0 to make a centre tap as shown on Decibel Dungeon, I was assaulted by a flash and crack. The fuses look alright, which worries me. Anyway, can I avoid making a fake centre tap by simply connected ground on the amp to the green plug/3d pin on the AC cord?
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Old 20th June 2003, 06:54 PM   #15
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change your hook up to this to make me understand the problem and let me know
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File Type: jpg ps1.jpg (16.4 KB, 181 views)
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Old 20th June 2003, 08:07 PM   #16
raffir is offline raffir  Canada
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What's the X?
I'm going to try it with one BR first. Now I just have to figure out how to wire everything to ground.
This is hard work, a lot harder than assembling the amp; there's the constant risk of death, the safety precautions, and the many, many fuses.
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Old 20th June 2003, 09:10 PM   #17
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X is cut connection
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Old 20th June 2003, 10:18 PM   #18
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When I hooked up my Aleph 30 power supply I followed the colors of the secondaries, believing that the wires with the same color belonged to the same secondary.. well I was wrong, I almost fried my bridges. So I'd check which wires belong to one secondary and which to the other...

Cheers

Andrea
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Old 21st June 2003, 12:30 AM   #19
Kermit is offline Kermit  Norway
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Default Re: Ground

Quote:
Originally posted by raffir
Hooking up 115-0 to make a centre tap as shown on Decibel Dungeon
On the primary side? Do you have a link to were this is shown?
If you identify the colours on the windings on your drawing it would be easier to see what’s wrong.
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Old 22nd June 2003, 03:49 AM   #20
raffir is offline raffir  Canada
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My apologies. I meant 15-0 on the secondary side.

I have red 7 yellow and the other two colours paired, as per the instructions on the Plitron web site referenced above.
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