more reading indicates an LM1084 would probably be a better solution. I could then sink the TO220 to a 'sink connected to the outside of a metal case and also power it with three 6V SLA batteries if necessary.

Bret

I'm aware of the properties of magic smoke, I've let enough out in my time

The supply socket on my K10 explicitly says 8.3V.
I'm thinking I could actually take a 7808 and keep it *really* simple; duty > 3A shouldn't be *that* high. Heatsinking is not a problem.

Though hold on, isn't this one of your specialist subjects?

Bret

Buy or build, I don't care, and of course it's going to be regulated. 4A @ 8V it is, then... I have a soldering iron and DMM and know how to use them

Bret

well, the trackday was very pleasant... my ex-colleague / friend spent several laps working with cameras to get the best angles and some of the footage rocks. (from the roof looking forwards and looking backwards and on the side looking towards the front) - the side version gets snow and the other two provide a real sense of speed until you see snowbanks moving left-to-right

On top of that, it was snowing like a very snowy thing on the way home - my car has a white bootlid again and you can't read the plate

Get my parking space back again tomorrow, but it would be nice if the builders actually told me they wanted to go into my garage beforehand. Wondering what to do with that one - I think I'm just going to make their life difficult on Monday, not that i have a lot of choice, as I have stuff to do and they've just left an open bag of cement on the floor.....

Bret

Trackday! Yeah! I'm off. Read you later

Bret

I have one of the connectors for the K10 and will be using it with both that and the K5. Now I just need to build the PSU... the input is 8.3V, right?

Bret

it's an honourable position, really

sorry, I is busy at work trying to fill a gap that can't be filled....

Bret

ha, if you want to do video, get a 32GB. Anything smaller is a waste of time.

Transfer speeds are really relevant when you're moving stuff around using a seriously capable reader, like the sandisk extreme ones, which hit 25MB/s with the right cards. Makes a big difference when you're trying to empty a 32GB card NOW.

Bret

Check out the amount of data you create when doing HD... we did well over 100GB yesterday with 2 cams and a four-hour event. And we didn't cover half of it!

Bret