I'm not sure if you've seen it but @fireanimal had a great idea. Use some kapton tape to secure the wire against the pcb.
Thanks... While talking about kapton, should I use this for my MT200 outputs?
I can't seem to find insulators in MT200-size
I can't seem to find insulators in MT200-size
It's below human hearing so it's really up to you🙂 picture is from post#2082
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How important is it that the legs of Q103, Q107, and Q108 are bent at 90-degree angle? I had to drill my own holes and a hard time installing these and could only get them in with curved legs.
You have a picture? You take the board off, install them (dont solder) install the board, tighten the screws on those transistors, tighten the board, then solder them in place.
I dont fully understand your question. Did you try to stuff them under the board while it was screwed down?
I dont fully understand your question. Did you try to stuff them under the board while it was screwed down?
Not screwed down. Hard time getting them to line up with the hole though when i put the board down. I should have soldered them in and then drilled. If i put the bend in them I would be even harder to line up.
Exact 90 degree angle is not important, curved leg installation will work. What is important is making sure the transistor is totally seated against the heatsink and the board then installed before you solder the leads. That insures the transistors will be seated against the heatsink when everything is assembled.
I usually install the transistors without any insulators, then install the board, then solder the leads. This will ensure the transistors will be seated against the heatsink with insulators.
I like to use mica insulators, but the method will work with any insulator or even no insulator if that is acceptable. That depends on the transistor package.
Search ebay for MT200 mica, there are lots of options. Of course, kapton works also, your choice.
Doing that with some of the (relatively) thicker aluminum oxide insulators would concern me. Is it okay with those also? Have you tried it? It sure would make life easier.
I have not tried it with aluminum oxide insulators, no idea if it would work with those.
There's no way you're going to hear any difference that's why I said "It's not strictly required".
Either way is fine. But if you want the absolute best performance the information is there if you choose to use it.
The legs should be bent in a way so that they are able to absorb the mechanical load originating from expanding and shrinking due to temperature changes. For same reason you should solder them last, when they are in there final position.
Stick with BOM values please, this has been covered not too long ago.