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Old 17th April 2009, 05:27 PM   #61
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Default Re: Re: looks like a regulated PS

Quote:
Originally posted by schro20

But these only do as much as 1.5Amps. Nowhere near enough for an F5. What am I missing?
When I design PS boards, I try to give them wider appeal than just one particular application. The regulator section by no means isn't intended to be used with class A amps, but a lot of people are using those boards with CD transports:

Click the image to open in full size.
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Old 18th April 2009, 04:15 AM   #62
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Hi Peter -

I'm interested in 2 more of the PSU boards, if available.

Thanks,
- Ray
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Old 18th April 2009, 05:38 AM   #63
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I'm out of them at the moment, but will order more soon.
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Old 19th April 2009, 01:20 PM   #64
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I'm intrigued by the possiblity of using some large 'screw-mount' caps on the PSU board. I'm assuming I'll have to drill my own holes.

Any words of caution???

And, do any traces on the bottom need to be cut???

I've attached an image from earlier in the thread to show what I'm talking about...

Please excuse all my dumb-noobie questions.

Thanks,
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File Type: jpg pd-psu-bigcaps.jpg (95.4 KB, 1050 views)
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Old 19th April 2009, 06:47 PM   #65
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No traces need to be cut, just drill proper holes and remove solder mask.

The board you see in a picture above had the holes already, as it was designed for F3 amp where only single positive voltage PS board could be used, hence I made it suitable for screw mount caps which usually come in larger size.
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Old 21st April 2009, 04:00 AM   #66
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Just figured I'd let you know I recieved my F5 boards today, thanks again Peter and I look forward to the PS Boards, Peace and keep well.
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Old 21st April 2009, 04:18 AM   #67
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Hello Peter,
Just a quick thank you. I received my 2x F4 and 2x F5 boards.

Cheers,

alex
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Old 21st April 2009, 05:45 PM   #68
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Default Heat sinks for rectifiers?

Peter,

There is discussion about using heat sinks for the rectifiers in the F5 (and I guess any other application for that matter) due to a diminution of performance due to heat.

Do you find that the rectifiers heat up in your application?

Do you have an opinion on this? As always, I would be interested in hearing what you think.

Thanks,
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Old 21st April 2009, 05:54 PM   #69
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I didn't even consider using rectifiers without heatsinking, so it's hard for me to say how hot they normall run. My PS pcbs allow mounting rectifiers directly on a chassis, which I find more practical than additional heatsinks. Picture below shows one of my (temporary) test setups:
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File Type: jpg jensen.jpg (98.6 KB, 1372 views)
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Old 21st April 2009, 06:22 PM   #70
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Default F3 boards

Hi Peter, are you planning on ordering some F3 boards in the future?

Thanks,

JJ
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