Pars

Congrats bui501! And Blueman2 for getting yours running (and keeping it that way).

Happy Birthday Dan!

After working with the mini boards in 3oz copper, I would strongly suggest going 1oz... Little parts and the heat to do heavy copper isn't a good combo. But I won't be buying any, so go with what the majority wants.

Moved a couple of 4.7u on the above to straighten them. Two down (less casing), 3rd (above) in progress.

Did a little "baking" yesterday, using the Kester EP256 paste I got. Still had to preheat the boards with a hot-air gun before applying the paste, but I like this paste a lot better than the Chip Kwik I had gotten. I think it turned out pretty well.

Happy Birthday Al!

Mini Dynalo After running the amp for over an hour, bias was 14+mA, so right where I want it to be. I thought it might be interesting to create a table or spreadsheet showing different users biasing and results, so I made a Google sheet, here: https://docs.google.com/spreadsheets/d/1D5LDuRdupZRoWR-GfAd03fkFSBAMY4-E_VcYfCAI1Z0/edit?usp=sharing Go ahead and fill in your info if you like so this is available for all to see. Note: this is the first time I've created a Google sheet, so let me know if you can't edit it and I'll try to figure it out Heatsinks: I've been looking for some. The ones that @mypasswordis mentioned from ebay don't seem to be available any more, and I'm having a hard time finding any that appear to be suitable size. There are some I almost pulled the trigger on that were 50mm x 25mm, but the 25mm would leave the end transistors half covered. I could get the Fischer SK81/37.5/SA from TME and cut them in half, but I'm trying to avoid that if possible. I'd need enough for 3 amps. EDIT: Found these, 45 x 35 x 18mm on ebay https://www.ebay.com/itm/263051780518?var=562054192200

Very sorry Todd, RIP Carol!

I have some of those as well, from THL audio IIRC. I don't recall any issues with them, other than the ground being a bit of a pain in the ass to solder. I'll check mine, but I've had them a few years now. They do seem to be made pretty well; not as nice as the Cardas rhodium, but a lot more reasonably priced.

Happy Birthday Colin!

Yes

Can you reverse the 2 prong and see what it is like?

Happy Birthday Steve!

How deep do you need it? The Slimline comes in up to 350mm deep. The Dissipante (w/heatsinks) comes up to 500mm deep.

Happy Birthday!

Somewhat ironic user name on that one...

I wouldn't think so, but you would need to look at the matching on them as far as hFe and possibly Vbe to determine. I would swear that some of the On Semi I've bought recently still had Fairchild markings on it (On Semi bought Fairchild). Are you talking Fairchild 06 and On Semi 56 or a mixture in the same device type(s)?

I bought a cheapie from ebay for $50 https://www.ebay.com/itm/2-in-1-Soldering-Rework-Stations-SMD-Hot-Air-Iron-Gun-Desoldering-Welder-898D/192010034886?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649 Seems OK, haven't tried the iron yet (probably sucks).

Happy Birthday!

None of that shit is in yet, i was just messing around with doing the voltage switch and having AC relays in for the main transformer. I think I basically did just parallel the 2nd set of primaries with the first, with the relays after that. I realize that when switched to 240V both relay contacts are in series but as far as I could see, that is the only way to do it. Of course I could cheat and use something like a MeanWell for the relay/e24 thingie...

That looks nice John! Love the base.

Yeah, I think the fabs try to protect you from your "mistakes", when in this case it is intentional. For your one-offs, do you just do ebay or something? I've bought some machinists tools (used) from ebay with good results (Starrett auto punch, some taps, etc.).

What set of counterbore bits? I could probably use something like that myself.

Looks serious, nice copper bar. Did you do all of that metalwork? Sony eh? Very nice!

Sorry to all injured HCers, and glad you didn't get injured in the fender bender CD44hi! I guess I am at home for a week or so following a strange week and sucky weekend in the hospital. It started out with me noticing double vision when looking left. Woke up on Saturday with double vision everywhere. Went to urgent care, who ran a CT scan which showed nothing. Then to the hospital where I spent Saturday and most of Sunday. Full head MRI there, again, clean. Diagnosed as 3rd cranial nerve palsy by neurologist, confirmed by ophthalmologist today. Should take care of itself in a couple of weeks, maybe less. I guess at my age, what they find in the scans, etc. could always be bad, so counting my blessings there. Heal up HC!