Nothing In Particular

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pre65
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#11821 Re: Nothing In Particular

Post by pre65 »

simon wrote: Sun Aug 30, 2020 1:54 pm Thanks Ray, it'll save me messing about with proto board.
Sure will Simon. :)

Have you got your heatsinks sorted ?
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#11822 Re: Nothing In Particular

Post by simon »

Yes. CPU sinks with a fan. £8 plus a cheap LED PS rather than £50-odd a piece. If I get on with the MoFo I can think about a larger investment. But if I end up with 6 channels that's a lot of heatsink.
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pre65
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#11823 Re: Nothing In Particular

Post by pre65 »

simon wrote: Sun Aug 30, 2020 2:03 pm Yes. CPU sinks with a fan. £8 plus a cheap LED PS rather than £50-odd a piece. If I get on with the MoFo I can think about a larger investment. But if I end up with 6 channels that's a lot of heatsink.
I'll be interested to see those heatsinks Simon as mine are rather large, and something smaller would make boxing it up an easier task. :wink:
The only thing necessary for the triumph of evil is for good men to do nothing.

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#11824 Re: Nothing In Particular

Post by simon »

There's a photo I uploaded in the last post on page 786 - the tape measure is 5m for scale!

Steve pointed me in this direction. Need to make sure the fan has unhindered airflow.

The thing that I can't quite bottom in my mind is attaching the board to the chip in this orientation. Either the board will oversail the heatsink, and then get heated up by the fan. Or link the chip with wire links to the PCB by the side of the heatsink.
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pre65
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#11825 Re: Nothing In Particular

Post by pre65 »

Yep, when I looked at computer CPU heatsinks, mounting the Mosfet and PCB was the problem.

I looked at something like this, and may indeed get a couple.

https://www.ebay.co.uk/itm/Heatsink-Uni ... Swe89etuMg


EDIT. I have ordered two just now. :D
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#11826 Re: Nothing In Particular

Post by steve s »

simon wrote: Sun Aug 30, 2020 2:21 pm There's a photo I uploaded in the last post on page 786 - the tape measure is 5m for scale!

Steve pointed me in this direction. Need to make sure the fan has unhindered airflow.

The thing that I can't quite bottom in my mind is attaching the board to the chip in this orientation. Either the board will oversail the heatsink, and then get heated up by the fan. Or link the chip with wire links to the PCB by the side of the heatsink.
Looking at your pic a few pages back I bent the mosfet legs to give an offset and pointed the board upwards. I left all the big caps off the board mounted them next to the cpu coolers so theres not alot of weight on the mosfet.
The fan was then mounted over a hole in the base board.
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#11827 Re: Nothing In Particular

Post by jack »

A two-seater Spitfire from Biggin Hill doing acrobatics over our village this morning....

Got about a 30 minute free display as we tried, and failed, to play tennis whilst watching and listening... Awesome!
03453543254325.jpg
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#11828 Re: Nothing In Particular

Post by shane »

This image was used in an RAF campaign to recruit engineers back in the early 60’s. Would you join?

Image
The world looks so different after learning science. For example, trees are made of air, primarily. When they are burned, they go back to air, and in their flaming heat is released the flaming heat of the Sun which was bound in to convert air into tree.
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#11829 Re: Nothing In Particular

Post by jack »

One way of getting a sun tan 😎
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Ray P
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#11830 Re: Nothing In Particular

Post by Ray P »

This made me chuckle
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Sorry, I couldn't resist!
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#11831 Re: Nothing In Particular

Post by IslandPink »

shane wrote: Tue Sep 01, 2020 9:37 am This image was used in an RAF campaign to recruit engineers back in the early 60’s. Would you join?
Whoo ! - of course !
Early prototype of Tony Harrison from the Mighty Boosh there .
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#11832 MoFo PCB Update

Post by Ray P »

Just checked and the fabrication of the MoFo PCBs is almost finished so they should ship in a day or two.
Sorry, I couldn't resist!
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#11833 Re: Nothing In Particular

Post by Ray P »

MoFo PCBs are on their way.
Sorry, I couldn't resist!
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#11834 Re: Nothing In Particular

Post by Neal »

3.9 earthquake near us this morning in Leighton Buzzard, we felt it and it sounded like something large had landed on the roof.
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pre65
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#11835 Re: Nothing In Particular

Post by pre65 »

Good news for the future of Hydrogen powered electric vehicles. :)

https://www.bbc.co.uk/news/technology-54079255
The only thing necessary for the triumph of evil is for good men to do nothing.

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