Rank: Member
Groups: Member
Joined: 8/6/2010(UTC)
Posts: 2
Location: Capetown - South Africa
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I know this must have been answered elsewhere but I cant seem to find anything on it, or maybe just don't understand exactly what I am finding.
What should the current for each rail be set to when supplying a single IVY III board from a Placid BP board? The manual says 250ma however at this current supply I am finding that QP3 is getting quite warm. I can only keep my finger on it for a second or 2.
I know - I should just measure the consumption, but I like to have things confirmed the the experts.
Cheers for the fantastic products!
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Rank: Member
Groups: Member
Joined: 4/13/2010(UTC)
Posts: 19
Location: The Netherlands
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Hey Bird, Manual states 150mA per rail. So 250mA is a little to much. Still, QP3 gets hot. I have seperate supplies for left/right set for something like 70mA, and these also get quite hot. You can find the breakdown of these figures here: Hifiduino Buffalo Specification
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Rank: Member
Groups: Member
Joined: 8/6/2010(UTC)
Posts: 2
Location: Capetown - South Africa
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Mfly wrote:Hey Bird, Manual states 150mA per rail. So 250mA is a little to much. Still, QP3 gets hot. I have seperate supplies for left/right set for something like 70mA, and these also get quite hot. You can find the breakdown of these figures here: Hifiduino Buffalo Specification Thanks for your reply Mfly The Placid BP Manual states "Now adjust the CCS pots (VR1/VR2) until the measured voltage across R1 and R2 are ~ 0.25V. The Placid BP is now ready to supply current of up to 250mA." I see now where I wasn't reading correctly (was a long day yesterday). In the fine tuning of the placid supply explained just after that part of the manual I had assumed that the starting point would be a minimum current supply and then increase, however the "fine tuning" step will actually decrease current being shunted. Busy at work now, so have to wait to get back to listen again. Wife loves what she heard though :)
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