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FS: 4 Channel Parallel LM4780 gainclone
FS: 4 Channel Parallel LM4780 gainclone
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Old 4th December 2006, 02:44 PM   #1
Matt_Tillard is offline Matt_Tillard  United States
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Default FS: 4 Channel Parallel LM4780 gainclone

The pcbs are BrianGT LM4780. Inside is a 800VA 31 secondary toroid, Rail voltages of approx 43V. No problems with thermal shutdown. 54,000uF per rail. I'll probably part this out if it doesn't sell whole. I will post pictures when I get home today. All questions welcome!

Asking around $300, I'm willing to negotiate the price though.
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Old 5th December 2006, 06:28 AM   #2
Matt_Tillard is offline Matt_Tillard  United States
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Old 5th December 2006, 06:28 AM   #3
Matt_Tillard is offline Matt_Tillard  United States
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Old 5th December 2006, 06:28 AM   #4
Matt_Tillard is offline Matt_Tillard  United States
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Old 5th December 2006, 06:28 AM   #5
Matt_Tillard is offline Matt_Tillard  United States
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innards

I checked the heatsink temp with a meat thermometer. I don't know where the non-contact thermometer ran off to...At the die, it is 113F and on the fins it is 94F. It doesn't heat up beyond this much when puttin' out the power.

I do have 8 inputs there, I thought about going to a 8 channel output, so I wanted to have the option. Use the top four unbalanced inputs. I realize that the toroid has no magnetic shielding, but I hear no buzz/hum, so I didn't bother with making a cup for it.

-Matt
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Old 5th December 2006, 12:59 PM   #6
Matt_Tillard is offline Matt_Tillard  United States
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My email address is matt.tillard(@)gmail(.)com

the dimensions measure 6.125" H, 13" D, and 14.75" W
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Old 8th December 2006, 02:09 PM   #7
Matt_Tillard is offline Matt_Tillard  United States
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how about $225? any takers?
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Old 9th December 2006, 01:40 AM   #8
alexcd is offline alexcd  United States
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Old 10th January 2007, 08:08 PM   #9
Matt_Tillard is offline Matt_Tillard  United States
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sold.
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