Thanks for the alert, I looked at those units on Ebay just a few days back. Lucky I didn't buy, but the capacitors just looked too small, all the units with realistic ripple specification are 50mm diameter x 80mm or more.
So what's the best deal on a realistic 10000uF 100V capacitor that people have found?
One European Ebay seller has labelled "Nippon Chemi-con" units that don't match any capacitor in the Nippon Chemi-con specification book. Hmm...
I will be a bit more cautious now I have seen those pictures.
May do some load tests too, does anyone have any recommendations?
Best wishes
David
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Still4given ...
ECO-S2AP682EA Panasonic | Mouser
35mm w/ 10mm LS 6800 uf caps to fit your boards >7$ apiece 😱 .
(the panasonics are the BEST ! )
The genuine chemi-con KMH or SMH are in 5600 -6800uf /100v 35mm , cost about $5.50 each.
Real caps cost $$$ !
OS
ECO-S2AP682EA Panasonic | Mouser
35mm w/ 10mm LS 6800 uf caps to fit your boards >7$ apiece 😱 .
(the panasonics are the BEST ! )
The genuine chemi-con KMH or SMH are in 5600 -6800uf /100v 35mm , cost about $5.50 each.
Real caps cost $$$ !
OS
Hello everyone. I made some nice models for the 2SC4883 and 2SA1859. Maybe they would be good candidates for driving many outputs in parallel?
http://www.diyaudio.com/forums/soft...pice-models-quasi-saturation.html#post3935643
These transistors are available at Digikey.
http://www.diyaudio.com/forums/soft...pice-models-quasi-saturation.html#post3935643
These transistors are available at Digikey.
Hi Juan,
Yes, that is who I ordered from. The prices are good and the boards are nice. The only drawback so far is the slow shipping. They use Sweden post and it seems to take a long time to clear customs. Other than that I have been very pleased. I just ordered CFA-XH boards on 5-13 and they shipped on 5-19. I'll let you know when I see them.
Blessings, Terry
Yes, that is who I ordered from. The prices are good and the boards are nice. The only drawback so far is the slow shipping. They use Sweden post and it seems to take a long time to clear customs. Other than that I have been very pleased. I just ordered CFA-XH boards on 5-13 and they shipped on 5-19. I'll let you know when I see them.
Blessings, Terry
Well I just got my board populated and after a bit of trouble shooting powered on. I only installed one pair of outputs but nothing exploded and now I've got two very bright LEDs dazzling me (the red and blue do look rather neat 😀). I can set the bias correctly and null the DC on the output down to zero.
I didn't play around with it any more than that, but all things considered a very successful first pass.
Now i just need to drill/tap the heatsink and install the little heatsink that tracks the drivers.
I have to say though that the LEDs are a touch too bright for easy trouble shooting, they kind of blind you if you're wanting to look near them on the PCB. I went for the cheapest that mouser carried in both blue and red and these happened to be some super bright things. So a word of warning to anyone building these - don't go for very bright LEDs if you don't want to be dazzled. It will be nice when I have them illuminating the inside of the case though.
I didn't play around with it any more than that, but all things considered a very successful first pass.
Now i just need to drill/tap the heatsink and install the little heatsink that tracks the drivers.
I have to say though that the LEDs are a touch too bright for easy trouble shooting, they kind of blind you if you're wanting to look near them on the PCB. I went for the cheapest that mouser carried in both blue and red and these happened to be some super bright things. So a word of warning to anyone building these - don't go for very bright LEDs if you don't want to be dazzled. It will be nice when I have them illuminating the inside of the case though.
Here is my confusion. He said one pair of outputs and then spoke of LEDs. So I guess he's talking about IPS and OPS. So which IPS?
Yeah its a DIYaudio issue with post numbers. By default the forums display something like 10 posts per page, you can change this somewhere to 50 posts per page. I do this as having only a small number per page gets quite tiring. The trouble here is that when you click on a post number link, it directs you to the correct page for 10 post per page. So I dunno, lets say it says go to page 205. Trouble is, with 50 posts per page, page 205 for you doesn't exist, for you you'd want page 41. As page 205 doesn't exist for you the forums simply put you to the top of the highest page number instead.
If you log out of DIYaudio, then click the link, it will work because the forums are now operating on the default settings rather than your saved ones. They really should fix it, but it could be a problem common to the generic forum software, rather than the version site admin has customised for DIYa.
The PCB is my own design though, I posted a picture over a week ago after the board was etched. It's a double sided 2oz copper board with SMD parts for all the small signal/lower power stuff.
The input stage is the wolverine followed by a 2 output pair version of the slewmaster. I only installed one pair however for the first power up 😀 OS uses two LEDs in the input stage, one blue, one red. I think he said you can substitute these for something else (zeners?), so they are not essential.
If you log out of DIYaudio, then click the link, it will work because the forums are now operating on the default settings rather than your saved ones. They really should fix it, but it could be a problem common to the generic forum software, rather than the version site admin has customised for DIYa.
The PCB is my own design though, I posted a picture over a week ago after the board was etched. It's a double sided 2oz copper board with SMD parts for all the small signal/lower power stuff.
The input stage is the wolverine followed by a 2 output pair version of the slewmaster. I only installed one pair however for the first power up 😀 OS uses two LEDs in the input stage, one blue, one red. I think he said you can substitute these for something else (zeners?), so they are not essential.
