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Old 11th August 2008, 10:34 AM   #1
Ted205 is offline Ted205  United Kingdom
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Default Chipamp PS audiosector PS

I've managed to pop my BrainGT 3886 chip again. I have 2 spare BrainGT "Snubberized" power supply boards.

I'm thinking of trying the audio sector LM4780 Amplifier Kit.

Will i be able to power them from the "Snubberized" power supply (+&-33v)
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Old 11th August 2008, 11:04 AM   #2
AndrewT is offline AndrewT  Scotland
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Unhappy popped my chipamp

why?
wrong voltage, careless fiddling, oscillation, small heatsink, which?
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Old 11th August 2008, 11:11 AM   #3
Ted205 is offline Ted205  United Kingdom
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wrong voltage polarity
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Old 11th August 2008, 01:10 PM   #4
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Default Re: Chipamp PS audiosector PS

Quote:
Originally posted by Ted205
Will i be able to power them from the "Snubberized" power supply (+&-33v)
Yes, of course, that supply will work with all my kits as well.
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Old 11th August 2008, 01:48 PM   #5
Ted205 is offline Ted205  United Kingdom
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thats good news. Do you provide the just the amp pcbs ?

The rail voltage is at 36v will this be ok for the LM4780 kit ?
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Old 11th August 2008, 01:59 PM   #6
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Yes, that voltage is fine. LM4780 is exactly 2 x LM3886 in one chip: http://home.pacific.net.au/~gnb/audio/lmcomp.html

A single amp board (good for one LM4780 chip) is $10. It allows stereo application and is basically the same as 2 x LM3886 amp boards.
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