Where to find Cheap or free salvagable capacitors for coilguns.
ahron11, Sat Jul 05 2008, 03:16AMDoes anyone know of any places to find capacitors that are ideal in coilguns. Right now I am using some 450V 2400uf (12) that I got for 50$.
Re: Where to find Cheap or free salvagable capacitors for coilguns.
Sulaiman, Sat Jul 05 2008, 01:44PM
That's 2.9 kJoules !
How much more do you want ??
Sulaiman, Sat Jul 05 2008, 01:44PM
That's 2.9 kJoules !
How much more do you want ??
Re: Where to find Cheap or free salvagable capacitors for coilguns.
Shaun, Sat Jul 05 2008, 02:30PM
Yeah, I have that same set of capacitors, and I believe rp181 does too. They're great for coilguns, and should work nicely with one of those puck SCRs you mentioned.
Shaun, Sat Jul 05 2008, 02:30PM
Yeah, I have that same set of capacitors, and I believe rp181 does too. They're great for coilguns, and should work nicely with one of those puck SCRs you mentioned.
Re: Where to find Cheap or free salvagable capacitors for coilguns.
FastMHz, Sat Jul 05 2008, 05:40PM
Auction sites are really your best bet.....though some hole-in-the-wall repair shops can yield the occasional find.
FastMHz, Sat Jul 05 2008, 05:40PM
Auction sites are really your best bet.....though some hole-in-the-wall repair shops can yield the occasional find.
Re: Where to find Cheap or free salvagable capacitors for coilguns.
Dr. SSTC, Mon Jul 07 2008, 02:20AM
well if your planning to dump all that energy into a single coil dont even bother the effiecency wont ecen by 0.5% how ever if your planning a multi stage coil gun like 3 or 6 stages it would be great. the best capacitors i find to use in coil guns is photo flashe caps they are pulse rated,guaranteed for like 100,000 discharges without losing perfomance, release there energy faster and bascicly have larger power density levels.
I can tell you this form experience i have been testing my coil guns for years now and found they work the best i am now on my way to building a portablu hand held coil gun how ever i wont be using the ones from disposible cameras but im planning on buying some 300uf 450 volt cornell dublier photo falsh caps
Dr. SSTC, Mon Jul 07 2008, 02:20AM
well if your planning to dump all that energy into a single coil dont even bother the effiecency wont ecen by 0.5% how ever if your planning a multi stage coil gun like 3 or 6 stages it would be great. the best capacitors i find to use in coil guns is photo flashe caps they are pulse rated,guaranteed for like 100,000 discharges without losing perfomance, release there energy faster and bascicly have larger power density levels.
I can tell you this form experience i have been testing my coil guns for years now and found they work the best i am now on my way to building a portablu hand held coil gun how ever i wont be using the ones from disposible cameras but im planning on buying some 300uf 450 volt cornell dublier photo falsh caps
Re: Where to find Cheap or free salvagable capacitors for coilguns.
ahron11, Mon Jul 07 2008, 03:04PM
Yes I have been into coilguns for quite some time and I am planning to make a 4 or 5 stage coil gun with those capacitors.
ahron11, Mon Jul 07 2008, 03:04PM
Yes I have been into coilguns for quite some time and I am planning to make a 4 or 5 stage coil gun with those capacitors.
Re: Where to find Cheap or free salvagable capacitors for coilguns.
rp181, Tue Jul 08 2008, 12:57AM
Unfortunatley, i do not have those caps. Where did u get them? im still looking for capacitors for my rail/coil gun project.
rp181, Tue Jul 08 2008, 12:57AM
Unfortunatley, i do not have those caps. Where did u get them? im still looking for capacitors for my rail/coil gun project.
Re: Where to find Cheap or free salvagable capacitors for coilguns.
Arcstarter, Tue Jul 08 2008, 01:38AM
You could just buy a few of these:
They each hold 300 joules (about) and you can series them up for like 5 of them for charging with an mot ir like 10 of them for an mot and doubler. Then you can just parallel them for even more energy.
Arcstarter, Tue Jul 08 2008, 01:38AM
You could just buy a few of these:
They each hold 300 joules (about) and you can series them up for like 5 of them for charging with an mot ir like 10 of them for an mot and doubler. Then you can just parallel them for even more energy.
Re: Where to find Cheap or free salvagable capacitors for coilguns.
Shaun, Tue Jul 08 2008, 02:54AM
Oh yea, sorry rp181. I mixed you up with another member. They are from BCD Parts on Ebay; I don't know if he's still selling them but I do remember he had THOUSANDS. They were being sold in lots of 12, 50, 100, and 200 IIRC.
Of course, maybe ahron11 doesn't have the same ones but that would be one hell of a coincidence.
They do work extremely well in coilguns. They appear to be kinda old but seem like quality inverter caps to me.
EDIT: oh and BTW i like the last sentence in the product description arcstarter linked to.
Shaun, Tue Jul 08 2008, 02:54AM
Oh yea, sorry rp181. I mixed you up with another member. They are from BCD Parts on Ebay; I don't know if he's still selling them but I do remember he had THOUSANDS. They were being sold in lots of 12, 50, 100, and 200 IIRC.
Of course, maybe ahron11 doesn't have the same ones but that would be one hell of a coincidence.
They do work extremely well in coilguns. They appear to be kinda old but seem like quality inverter caps to me.
EDIT: oh and BTW i like the last sentence in the product description arcstarter linked to.
Re: Where to find Cheap or free salvagable capacitors for coilguns.
ahron11, Sat Jul 12 2008, 05:39AM
That is the same place that I got my capacitors. haha. coincidence I guess.
ahron11, Sat Jul 12 2008, 05:39AM
That is the same place that I got my capacitors. haha. coincidence I guess.
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