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Old 20th February 2012, 04:32 PM   #11
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The nature of these beasts is that normally the -ve will be connected to the chassis - not always but its common.

Just measure between V+ and chassis and V- and chassis with a DMM.

If they are open circuit you are laughing. If not then you will have to insulate one PSU from the chassis. Not a problem just use insulating standoffs and nylon bolts.

The PSU that you use for the +24V can be mounted normally, it is the PSU that you want use for the -24V that must be isolated from Chassis GND as you will be connecting its +V to the Chassis and using its -V as -24V.

Last edited by KatieandDad; 20th February 2012 at 04:35 PM.
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Old 20th February 2012, 04:48 PM   #12
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PM sent to bsc. Thread closed temporarily
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Old 20th February 2012, 05:38 PM   #13
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Thread reopened.
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Old 20th February 2012, 05:41 PM   #14
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I don't think this belongs in the Pass domain ??
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Old 20th February 2012, 07:00 PM   #15
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Originally Posted by KatieandDad View Post
I don't think this belongs in the Pass domain ??
I'll post a small video of it (NP aleph J) running on youtube then thread can be closed/moved?
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Old 20th February 2012, 07:01 PM   #16
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why not? it is a PSU for aleph J.
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Old 20th February 2012, 09:43 PM   #17
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Originally Posted by BScorner View Post
I also have another question as for RCA input... do I bridge -In to ground?

Thanks again guys not too much BS around here today

Now I get -24v and +24 to the pcb but no sound.. gah... i wonder how i bridge the input of rca?
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Old 20th February 2012, 09:59 PM   #18
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yes

neg in to gnd

RCA hot to pos in
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Old 20th February 2012, 10:02 PM   #19
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yes

neg in to gnd

RCA hot to pos in

no sound, what should i check i have signal to the +In.
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Old 20th February 2012, 10:06 PM   #20
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well - everything

search for Algar_emi's Aleph30.pdf on forum

even if plain Aleph , you'll find detailed info what's each part doing

or post Papa's A J sch here , with your voltages shown , for all important positions
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