High uF value 160v cap source

tjencks · 23rd July 2010, 02:42 PM

I am looking for 160v snap-in caps with a higher capacitance than 3900 uF. The only brand available at the moment seems to be Panasonic and they only have a max uF of 3900 in stock at Digikey.

Digi-Key - P13785-ND (Manufacturer - EET-UQ2C392LA)

Any suggestions on where I might find higher value caps would be greatly appreciated.

-TJ

jackand08 · 23rd July 2010, 05:50 PM

With such high voltages and wanting high capacitance too, you will struggle to find a capacitor of the rating that you require. If you need more than 3900uF, I'd recommend paralleling the capacitors to get the desired capacitance. The voltage rating will stay the same though, at 160V.

tjencks · 23rd July 2010, 10:39 PM

Yeah I was going to use 10 3900uF Panasonic caps in series so 10 of them one after the other. Not sure if that is what you mean by paralleling the caps...I'm a bit of a nubie to electronics so not familiar with the term.

-TJ

jackand08 · 24th July 2010, 01:39 PM

By paralleling tha caps, I meant connecing all of the positive terminals together and connecting all of the negative terminals together. The total capacitance would then be capacitance mulitplied by the nunmber of caps. By connecting them in series you would only increase the working voltage of the capacitors, the capacitance would stay the same.

Jack

tjencks · 24th July 2010, 02:19 PM

Ok i guess i was planning on paralleling them then. Do you think doing something like 20 of them in parallel would be a problem?

-TJ

jackand08 · 25th July 2010, 04:31 PM

You can have any number of capacitors in parallel but it depends on what you are using them for. If you have 20 capacitors in parallel, charged to near their maximum voltage, then that is a massive amount of power you are talking about there. If you were to bridge the positive and negative terminals with even a screwdriver, it would definitely scorch or possibly melt the screwdriver. Just think what would happen if you did this with you finger...

tjencks · 26th July 2010, 04:31 PM

Yes,

Massive amounts of power is what I'm looking for. This will be for a 1200 watt into 4 ohm amp which is going to drive a signle 18" sub. I'll be careful not to close the circuit with my finger ;-)

jackand08 · 26th July 2010, 04:51 PM

What voltage will the amp be running on? Because if it is lower than 160V you could probably save a lot of money and space by going with lower voltage and higher capacitance capacitors. Have you ever made an amp before, because 1200W is a ridiculous amount of power and is extremely dangerous.

tjencks · 26th July 2010, 05:41 PM

Hi Jack,

This if for the HPA-nvx 1200 from Aussie Amplifiers. The rails are running at 110v so don't really need the 160v caps but 125v and 150v are even more rare and hard to find than 160v.

And yes it is a ton of power which is why I select these amp boards...I'm just building the power supplies.

Regards,
Theo

ra7 · 26th July 2010, 06:49 PM

Have you tried apex jr.?

23rd July 2010, 02:42 PM	#1
tjencks diyAudio Member Join Date: Feb 2009	High uF value 160v cap source I am looking for 160v snap-in caps with a higher capacitance than 3900 uF. The only brand available at the moment seems to be Panasonic and they only have a max uF of 3900 in stock at Digikey. Digi-Key - P13785-ND (Manufacturer - EET-UQ2C392LA) Any suggestions on where I might find higher value caps would be greatly appreciated. -TJ

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23rd July 2010, 05:50 PM	#2
jackand08 diyAudio Member Join Date: Oct 2008 Location: Wild North West...of England	With such high voltages and wanting high capacitance too, you will struggle to find a capacitor of the rating that you require. If you need more than 3900uF, I'd recommend paralleling the capacitors to get the desired capacitance. The voltage rating will stay the same though, at 160V.

23rd July 2010, 10:39 PM	#3
tjencks diyAudio Member Join Date: Feb 2009	Yeah I was going to use 10 3900uF Panasonic caps in series so 10 of them one after the other. Not sure if that is what you mean by paralleling the caps...I'm a bit of a nubie to electronics so not familiar with the term. -TJ

24th July 2010, 01:39 PM	#4
jackand08 diyAudio Member Join Date: Oct 2008 Location: Wild North West...of England	By paralleling tha caps, I meant connecing all of the positive terminals together and connecting all of the negative terminals together. The total capacitance would then be capacitance mulitplied by the nunmber of caps. By connecting them in series you would only increase the working voltage of the capacitors, the capacitance would stay the same. Jack

24th July 2010, 02:19 PM	#5
tjencks diyAudio Member Join Date: Feb 2009	Ok i guess i was planning on paralleling them then. Do you think doing something like 20 of them in parallel would be a problem? -TJ

25th July 2010, 04:31 PM	#6
jackand08 diyAudio Member Join Date: Oct 2008 Location: Wild North West...of England	You can have any number of capacitors in parallel but it depends on what you are using them for. If you have 20 capacitors in parallel, charged to near their maximum voltage, then that is a massive amount of power you are talking about there. If you were to bridge the positive and negative terminals with even a screwdriver, it would definitely scorch or possibly melt the screwdriver. Just think what would happen if you did this with you finger...

26th July 2010, 04:31 PM	#7
tjencks diyAudio Member Join Date: Feb 2009	Yes, Massive amounts of power is what I'm looking for. This will be for a 1200 watt into 4 ohm amp which is going to drive a signle 18" sub. I'll be careful not to close the circuit with my finger ;-)

26th July 2010, 04:51 PM	#8
jackand08 diyAudio Member Join Date: Oct 2008 Location: Wild North West...of England	What voltage will the amp be running on? Because if it is lower than 160V you could probably save a lot of money and space by going with lower voltage and higher capacitance capacitors. Have you ever made an amp before, because 1200W is a ridiculous amount of power and is extremely dangerous.

26th July 2010, 05:41 PM	#9
tjencks diyAudio Member Join Date: Feb 2009	Hi Jack, This if for the HPA-nvx 1200 from Aussie Amplifiers. The rails are running at 110v so don't really need the 160v caps but 125v and 150v are even more rare and hard to find than 160v. And yes it is a ton of power which is why I select these amp boards...I'm just building the power supplies. Regards, Theo

26th July 2010, 06:49 PM	#10
ra7 diyAudio Member Join Date: Feb 2009 Blog Entries: 1	Have you tried apex jr.?

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