Hi.I have high stock of these capacitors.They are one of the best quality capacitors ever made but because of the voltage and capacity there is not much usage of them.I heard they are made by special expensive technique.
Anybody recommends good quality sounded amplifier schematic by using these 3300uF 250v Type GH F&T Germany made caps?I do not want to send them to trash bin.Thanks
Anybody recommends good quality sounded amplifier schematic by using these 3300uF 250v Type GH F&T Germany made caps?I do not want to send them to trash bin.Thanks
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Wire pairs in series, along with voltage equalizing resistors. You net 1650 μF./500 WVDC. That would be fine in the 2nd position of a CLC filter in a PP or PPP KT88 amp.
For that check the Pass Labs section of this website, Nelson Pass has some designs that might benefit from something like this
The number of uF is more important for solid state (low impedance) amps. You would want at least 3 in parallel per rail, six would be ideal. It would take up a LOT of space, but have low ESR and inductance compared to a single 20,000 uF cap. If it cost less than the single cap you would still come out ahead. What they would really be best for is the mains rectifier in a switch mode supply feeding some big solid state amp. Two in series for a doubler making the 340 volts. That would be my guess as to their original application.
As far as tube amp power supplies, some of us are working on things that two or three or even four in series would be actually appropriate for. It’s a bit of overkill for your typical 60 watt per channel EL34 amp. Not so overkill when paralleling a lot of KT88’s or sweep tubes to make something that might get the attention of Homeland Security.
Yep as others have said two in series with bleeder resistors sounds ideal for a SS rectifier KT88/6550 PP amp.
Any audiophile solid state amplifier schematic?Maybe with transformer output? It may sound tube like with transformer maybe?
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Those are some pretty big terminals on that cap... My guess is that whatever "Special expensive technique" is because they're optimized for low ESL/ESR, possibly with pulsed operation in mind.
With that said, a pair of those would be great for a tube amp if run in series. Another way to use them would be to use two of them in a voltage doubler with a transformer in the 150v range.
With that said, a pair of those would be great for a tube amp if run in series. Another way to use them would be to use two of them in a voltage doubler with a transformer in the 150v range.
For solid state they are probably too high voltage and too low capacitance. It is an unusual combination of values.
Best bet probably in series as mentioned before, for a tube amp.
Or in singles for an OTL tube amp, or a 6C33 tube amp.
Jan
It's not really that odd a value for things like power converters or scientific applications. If they are optimized for low ESR / ESL (especially if designed for pulse applications), it's not an unusual value at all, but it sure is an inconvenient value for those who want to use surplus parts to build amplifiers 🙂
I suspect that it likely would, but I think that you're going to find it easier to use these in a tube amp.