So, if anyone is interested in some of these micro 11-turn trimmers I have decided to go with a different value and have a kings' ransom of 50 ohm left over
Actually I will get these made for me, but need to validate a few values. It was a pretty quick job, much faster than doing it by hand. a plate wasn't viable because there are parts on both sides.
(makeshift board heater)
Then there were three. Now need a jig to be able to apply the paste to the bottom side - perhaps a piece of plywood with a cutout?
As you can see, the middle pin of the transistors and the tabs wouldn't flow. These are multilayer boards with that large copper area exposed. I also had to "reheat" the boards during the process. I am not confident I really got good contact on the j-hook trimmers. I will just apply hand solder to these parts likely.
Ever made something real quick, going against your feeling that it might be a bad idea?
Here is one I did today. It isn't as bad as it could be - it was plugged into a fused variac - but still...
Yeah, there are a few cracks that I would like some advise on dealing with. I am thinking maybe a thin epoxy? I watched a few videos on fine woodworking about the approach for knots and other types of checks, but should consult real expert on the matter. There are four checks in this picture.
Very nice. The dimensions are "close". I will try and order some and then if needed incorporate them into my board respin. Thanks!
Edit: and bought them all
Looks like these Toshiba MOSFETs won't fit a #6-32 screw (I had to drill them out slightly). Is there an equivalent part to these Aavid heatsinks that accepts a metric screw? Any other ideas or similarly sized heatsinks?