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Old Today, 09:23 AM   #31
gary s is offline gary s  Australia
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Join Date: Nov 2002
Location: Australia
Hi Jeff,

Thanks for the heat sink (spreader) dimensions from Avondale. As they don't supply these any more, I am sure I can find a very similar C section or 90 deg angle aluminium section extrusion to do the job at 5mm thick.

Also looking forward to your inverted regulator BOM and stuffing guide to complete all the documentation required.

Lost track of where you might be up to with the pcb's and the GB.

Received all the original transistors today in the post from Cricklewood in London - great service and very good pricing, original outputs are now exhausted from them though. But for anyone else interested, Donberg in Jeff's homeland do have them in stock - ST Micro.

Also the Mil connectors Jeff has linked in post #17 are very high quality as well - should be absolutely no long term problems with them and very easy to use when testing or trouble shooting.

Cheers,

Gary..

Last edited by gary s; Today at 09:33 AM.
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Old Today, 02:21 PM   #32
JeffYoung is offline JeffYoung  Ireland
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Join Date: Jul 2017
Location: Ireland
NAP250 amp boards & regulator boards
Boards have arrived.

Cost per board comes out to 13.40 (53.60 per stereo amplifier).
Shipping is 5.70 untracked, or 12.70 tracked.

PayPal to jeff (at) rokeby (dot) ie.

Please indicate which postage you want. Please also include your shipping address.

Cheers,
Jeff.

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Old Today, 02:27 PM   #33
JeffYoung is offline JeffYoung  Ireland
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NAP250 amp boards & regulator boards
Hi Gary,

Yeah, those connectors are pretty sweet, aren't they? Tempted to go rewire a bunch of my Pass clones....

For others, NJSemi also has BDY58s last I checked.

Cheers,
Jeff.
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Old Today, 02:32 PM   #34
JeffYoung is offline JeffYoung  Ireland
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NAP250 amp boards & regulator boards
I did talk to Les about the heat spreaders. He's moved to a CNC machining company who have a 100 piece minimum quantity in order to program the machines. He said they might do a smaller order, but at greater cost (and even the normal cost is more than the cost per board). So probably not cost-effective.
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Old Today, 08:22 PM   #35
skunark is offline skunark  United States
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Location: Pacific Northwest
NAP250 amp boards & regulator boards
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