8 smaller caps paralleled will likely have lower ESR than one single larger cap. Depending on the physical arrangement of the caps, they could have lower ESL too. But the 'response' rate won't be any different in practice as far as I can see - that's determined by the capacitance which will be the same.
Late to the topic, I have a Soundcraftsmen a5002 amplifier that requires a weird combination of capacitors, and the ones in that I need are very expensive, trying to save some money
It takes
2 11000uf 75V
2 22000uf 40 V
power capacitors
price from DigiKeys $154, crazy high ?
I found 4 22000uf 80V for $19 each
going from 11000uf to 22000uf is ok, or too much ?
It takes
2 11000uf 75V
2 22000uf 40 V
power capacitors
price from DigiKeys $154, crazy high ?
I found 4 22000uf 80V for $19 each
going from 11000uf to 22000uf is ok, or too much ?
That should work. Are you sure they will fit mechanically?
Are the parts new, used, or old stock?
Are the parts new, used, or old stock?
They are from the Update my dynaco store
https://www.updatemydynaco.com/documents/DataSheetWebSite.jpg
$172.81 final price from Digi-key, the price is insane
https://www.updatemydynaco.com/documents/DataSheetWebSite.jpg
$172.81 final price from Digi-key, the price is insane
They are, the guy is very well know.
I am not familiar with supertech capacitors, they seem legit
The amp is a class H
I am not familiar with supertech capacitors, they seem legit
The amp is a class H
Made in Taiwan. Small quantities of high ripple current, screw terminal capacitors can be expensive.
This is a class H stacked power supply circuit. I would think the larger capacity caps would be ok.
Perhaps someone who has direct experience with one of these amps can offer their opinion.
Perhaps someone who has direct experience with one of these amps can offer their opinion.
They only used 11000 uF on the bottom to to keep the CV product constant between upper and lower tiers. As designed, it’s effectively 7300 uf. Think of the lower 62V as being two 31V in series, each with 22000 uF like the last 31V. There isn’t really a problem going bigger on the cap, but they probably figured there wouldn’t be a reason to go bigger, and bigger is more expensive for the original manufacturer. If you can get bigger cheaper, fine. But you won’t get the full benefit unless the uppers are increased in proportion.
Most class H amps are an even split (or close to it) on the rail voltages, and use the same value cap for each stacked tier. There are some exceptions, like Carver, which have completely separate caps (and hard to find 150V caps in a weird form factor on top - thank your stars you’re not looking for those).
Most class H amps are an even split (or close to it) on the rail voltages, and use the same value cap for each stacked tier. There are some exceptions, like Carver, which have completely separate caps (and hard to find 150V caps in a weird form factor on top - thank your stars you’re not looking for those).
I was surprised how much ripple current that modern snap-ins were rated for these days. The gap to the screw terminal types is shrinking, if not gone completely. I was looking at 68000 uF/50V Chemi-cons which were about $20 a pop with MOQ of a full pallet of them (60 or 80 pieces). Ordinary CDE 22000 uF snap ins were six bucks (just over 4 in quantity) and rated OVER 1/3 the ripple current! And no lead time. You can guess which route I took. Pricing these days has probably gone nuts across the board.
