Which resistors to use???

[LucasAdamson]

Or spelt correctly; Aluminium Heatsinks, Aluminium Extrusions, Aluminium Extruded products, Aluminium profiles - Birmingham Aluminium

Awesome, thanks!

 

[Marra]

Your welcome; good luck with your build.

Keith

 

[Andy5112405]

I've just negotiated a small deal with Birmingham alluminium.com. They will sell me 6 x 150mm cuts of 1850HS Heatsink extrusion. Blah Blah, this is 250mm Wide x 150mm Long x 83mm High. This equates to 0.28K/Watt (In Black) and will keep an Aleph 4 at about 55 C. They will cost me about £40 each incl. P&P. I haven't managed to do better than that in the UK.

 

[Andy5112405]

Anyone short of IRFP244's. I bought 50 for matching purposes only to find that they were all from the same batch. Every one that I have tested so far has Vgs at 400mA within 0.05V of each other. Nelson himself recommends 0.1V so these are all matched together.

 

[Andy5112405]

Please note I've only tested 13 of them so far - unlucky for some, but so far they are all matching well.