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Old 13th April 2003, 09:52 AM   #11
trwh is offline trwh  United Kingdom
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Jim,

"I will make another power supply with a lower voltage transformer, the thick alloy plate I used as heatsinks for the chips got very hot!"

I think from your pic you are using TO220 sized insulating pads under the ICs. Since your case is wooden, you could benefit from mounting them directly to the heatsink, which IIRC would then be at the -ve rail potential. Use just a little thermal grease as well.

See ya,
Tim.
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