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siliconray 9th October 2011 10:35 AM

500W 12V to 45V Invertor PSU For Car Audio!!!
This is absolute a cool gadget for audio DIYers. It convert 12V from car battery to dual 45V DC power supply for audio amplifiers. Voltage is adjustable by adding feedback resistors in parallel with the on board res. The max power is up to 500W! Don't tell me it's not enough for your car audio...
See details here:
500W 12V to 45V car audio PSU

siliconray 10th October 2011 01:35 PM

Did a test today with a electronic load. The voltage was set to 45V, current set to 6A. Postive and negative output are tested seperated because the electronic load don't have dual input :-)
Positive voltage dropped from 45.1V to 44.7V and negative voltage drops from -45.1V to -44.8V. Result is quite positive.

thesoundkid 12th October 2011 12:09 AM

what voltage can it be reduced to?
25-28v +/-?

siliconray 12th October 2011 12:20 AM

can be down to 15V. Only need to add a resistor in parallel to the voltage feedback resistor.

siliconray 31st October 2011 05:21 AM

More pics. The newest version upgrated the MOSFET with a more powerful part. Output is more stable.

siliconray 16th November 2011 07:07 AM

How to enable the module
1 Attachment(s)
Hello customers, sorry for the valgue instruction. To enable the modue, the pad marked with R must be connected to +12V. See the photo attached

siliconray 16th November 2011 07:13 AM

Hot to modify the voltage
1 Attachment(s)
Just solder 2 resistors to modify the output voltage. See the attached photo

norazmi 17th January 2012 03:32 PM

this board have short circuit protection?

siliconray 17th January 2012 11:29 PM

Yes it is short circut protected.

JZatopa 23rd February 2012 04:50 AM

I have been looking for something like this, now I just need to find the right chassis.

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