Pars

I think he meant to put them in series and take the gnd from the connection between the two, -24 from the negative free end, and +24 from the positive free end.

Wasn't sure where to put this. My son showed i to me and I thought it was funny:

I probably have one I can spare John. I'll take a look and PM you. PCB that is... don't have any actual 4CP2500s.

As has been mentioned by several users here, the CFA2 or CFA3 current feedback amps are probably more recommended here over the dynalo. Current part availability as well. This thread: The SS dynalo (balanced) can be built with current surface mount PZTA output devices (the more recent boards), but I personally would go for the current feedback amp instead. Getting boards run is generally so cheap these days thru places like seeedstudio, etc. that waiting for a group buy unless it is something special (large board or boards, heavy copper, etc.) isn't really necessary. Someone may have boards available as well, but in general, I stay away from ebay or aliexpress. There are a number of chinese copies of Kevin's boards, using his gerbers, which he generally doesn't seem to mind (and he is aware of them), so I guess as long as it is a quality run, there shouldn't be a problem with them.

Can you get genuine MPSW06 / MPSW56 output devices? These have been discontinued for some time and likely that ones you might find could/would be fakes. The power supply on that board isn't as good as a GRLV is also. And the layout of that PCB certainly isn't Kevin's. It probably seems all neat and tidy to have everything on one PCB, but that isn't always the case.

Happy Birthday Todd!

Happy Birthday!

Better Call Saul - Liked but never watched The Handmaid’s Tale - Never watched Ozark - Good Succession - Good Mrs. America - Never Watched Ramy - Never Watched The Morning Show - Never Watched Westworld - Kinda went off the rails, but still watched and enjoyed

Happy Birthday!

Pizza looks good Al (so did the punjabi beans). What did you do for the crust? Any particular recipe? I know this was back in May...

^Is that the guy who is selling some on diya as well? I think it is, and I would bet that those are genuine.

2SK170 and 2SJ74 are the singles for those. And there are the Linear Systems versions (LSK389 and LSJ109 or variants). Of course the majority of the original Toshiba parts on ebay, aliexpress and even some suppliers (dalbani and their ilk) are fakes.

RIP Mr. Lewis. A true icon and a big loss!

Yep! RIP Grant.

^ The large cap version allows a shorter height board for use in a 1U chassis. The version which thuytn mentions (.47) also uses the to220 schottky rectifiers, and has dual outputs. This is the version I would use unless I needed the shorter height.

Quarantine watching: Finally finished watching Ozark season 3. Ending kinda surprised me a bit. Penny Dreadful: City of Angels (Showtime). Show about race riots in LA pre-WWII, with some Hispanic religious supernatural stuff, as well as Nazi party activities in LA, thrown in. This one was pretty good I thought. Not sure if there will be a season 2, but I hope so. I had watched the original Penny Dreadful (also Showtime) previously, which is set in Victorian London. Perry Mason (HBO). A remake of the classic show from the '50s-'60s, this time Perry is a private investigator, set in 1932 LA. Only up to the 4th episode, but pretty good so far.

Happy Birthday Jose!

Happy Birthday!

Happy Birthday Mike!

Happy Birthday!

$135 for an IEC power cord is a lot of snake oil. I've built a few Bob Crump Asylum power cables, and honestly can't tell any difference between them and generic hd 14ga IEC cables. For a CD player, very little current so even 16ga would be just fine.

I'll take a stab at your questions. I haven't built the full size SMT Dynalo, but have built a few of the mini Dynalo's, which are pretty much all SMT. The resistors for the mini are all 0805 with the exception of the 20R, which were 1206. Vishay TNPW 0.1% 25ppm were used for most. I'm not sure on sizes for this version however. Kevin's schematics typically do not show power rail bypassing on them. Follow the board values. These appear to be LEDs and not caps. Kevin normally specs 1.7V red LEDs, such as Liteon LTL-307ELC. I don't have a BOM for the full-size SMT version. This project is still a very valid amp. Some would suggest the current feedback amp (CFA-2 or CFA-3), and I might concur with that opinion. Be sure to use the golden reference power supply (GRLV) as well, as it is very good and makes a difference.

Lots of peeps have had problems with Dalbani selling fake shit. I'm not so sure I would be so quick to think the Mouser IXYS parts are your problem... possible, but not likely.

Happy Birthday Kerry!

Shit... I didn't realize that he had passed away, and just recently too. RIP Albert.