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Just finished making the last of this on the weekend. Its rated at 5000 volts, 360 uF, 4500 Joules. I have designed it to use air to operate rams that isolate the transformer from the bank before firing, as well as triggering it to fire. Part of the reason to do this is safety, all that connects to the rams is plastic tubing, it also makes it easy to operate at the flick of a switch. It has a digital readout on the control box to show what amps/volts/power I'm putting into a 5500 volt transformer. I use a variac to adjust the voltage I am delivering to this transformer, I rectify the output of this to charge the caps with. I mounted it on wheels to make it easily transportable. It has a 7KV meter mounted on the lid for easy reading of voltage level the bank is currently at. The capacitors are from Russia, designed for pulse applications apparently.
Unfortunately, I had a capacitor failure after about 7 shots, as I worked my way up to firing at the full 5000 volts, I was aiming to fire at 4000 volts this time, I isolated the bank, just about flicked the switch to fire and the capacitor blew up. I will try and get it fixed soon. I will post in the Electromagnetic Projectile section asking peoples thoughts on what happened to cause this faulure, so if your looking at the video and might know, please go there and help me out by posting your thoughts. Thanks.
Thanks FastMHz. I bought it off ebay, I thought it was decent value for what it did and it seems to work well, was even easy to wire up, was waiting for the smoke to pour outa the box from my wiring of everything when I first plugged the power chord in but it lit up and worked. Another feature I liked about it is the alarms for when it reaches certain voltages that you can set, in time I hope to use this to activate my isolation air ram as a failsafe for overvoltage of the bank.
Here is a link to one of the ebay shops selling them
Registered Member #538
Joined: Sun Feb 18 2007, 08:33PM
Location: Finland
Posts: 181
I'm fairly sure those caps are not pulse rated, the terminals look way too small + usually pulse caps dont have terminals with insulators like that, they tend to use flat low inductance terminals.
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5000 Volt, 4500 Joule Cap Bank. Pneumatically triggered.
