Hypex UCD 180 with battery as power supply.

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Hi,

Im gonna use two ucd 180 modules in a portable speaker powered with a battery delivering 45V DC nominal.

I have connected it like this, without ground. Still the amplifier is dead, no sound.
I have also tried with - and ground together.

Any tips?

Thank you, Simon.
 

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It looks like you need a dual supply. If the supply is 45 volts in total (as measured between the two fuses) then you need two series connected 24 volt batteries (giving 48 volts) and using the centre point as ground. So you get a minus 24 and plus 24 volt rail as referenced to ground.
 
Hi ... ... from looking at the diagram in your post #1 I would say yes. I would just make sure that the voltages (+/- 24 volts) are within the range usable by the UCD180 ... It is not +/- 45 VDC? I am not familiar with the specs for the UCD180 ...

Cheers,

Jesper

Its ratet at +/- 55 VDC max. +/- 25 VDC minimum

Thanks :)

Mooly, tanks, and yes, i was a little fast with the drawing ::p

Edit: looks like i may need another set of batteries to get high enough voltage on each rail...
 
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