Heat Sinks for WB was RE: WBO2 testing

[Stephen Andersen]

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Nic,

Problem is that I was planning on using the plastic 
RadioShack box, while Bill was going to use the metal
Hammond box, so that we could give people two alternatives.

I may just try to buy the next size larger RS box (8x6x3) 
and then set the voltage reg. and resistor aside on a 
bigass heat sink.  

The box will be a bit clunky this way though...

Anyone have any other ideas/suggestions?

Steve

> -----Original Message-----
> From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> Behalf Of Nic van der Walt
> Subject: RE: Heat Sinks for WB was RE: WBO2 testing
>
> >It is starting to appear that I have significantly 
> >underestimated the amount of heat sink required for 
> 
> You could try to mount the resistor and the power transistor
> to the aluminium case, instead of on the PCB. The box
> can be a great heatsink.
> 
> Use three wires to the PCB, and a silicon isolation washer
> and some heatsink compound between the case and the tranny's
> tab.
> 
> Use a panel mount power resistor.
> 
> Take a look at:
> 
> Resistors:
> http://info.digikey.com/T013/V5/551.pdf (89 type)
> 
> Heat sink pads:
> http://info.digikey.com/T013/V5/347.pdf
> 
> Heat sink compound:
> http://info.digikey.com/T013/V5/342.pdf
> 
> N.

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