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I have three separate sources(Placid HD Bipolar Supply) for Legato3.
Please help me, you have to set current for each?
I will not use headphones.
Thanks!
Best regards,
Vitali
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Your question is not quite clear to me. If you mean you have 3 Placid HD BP power supplies connected to 1 Legato, then yes: you need to set the current on each PSU. If you mean do I have to use all 3 power connectors, then the answer is no, definately not. You can power the I/V stage from just one PSU, and certainly from a HD version.
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Thank you very much for helping me! I'm using 3 separate power supplies, and when I connect power to the centre section of the board (Ballsie), I get 1.3VDC instead of 15VDC at power in on the positive rail. Legato If not connected, everything is ok. We 15V everywhere. I current set to all sources for the 150mA. Any idea, Leon? For three days I bother: (: ( Thanks! Edited by user Wednesday, July 13, 2011 11:57:16 PM(UTC)
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Rank: Member
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I'd start by checking that PSU against the other 2: are all components on the correct place, and is the orientation correct?
2nd: are all solderings OK?
Next: If you swap the centre and one of the other PSUs, does the problem stay at the centre or does it stay with the PSU?
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vitala - I had the same problem with the Ballsie stage of Legato 3. The buffers add additional current requirements, and in my case I had to replace a resistor on the Shunt Regulator that powered the Ballsie stage. I don't use the Placid for this application, however, if you set the PSU to provide 180 to 200mA, that should do the trick.
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I do! The problem was the transformer, have little power. I put one of 80Watt and now works perfectly!!(I set to 200ma) Thanks Leon! Thanks Naria! Regards, Vitali Edited by user Saturday, July 16, 2011 11:17:40 AM(UTC)
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