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Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
EastVoltResearch wrote ...
First thing you want to do is get some requirements for your design.
How much output current do you want? How much voltage droop (sag) can you tolerate per your load?
From here, there are some simple equations available (Search google for C-W Multipliers) to determine what size C you need.
Yea, i guess i did not feel like saying all of that :P. Remember, the multiplier's capacitors will discharge into the tank capacitor through the charging choke, so calculations need to be considered to select small enough inductance to ensure the tank capacitor is fully charged before the spark gap fires, but big enough to keep the peak current low on the multiplier caps.
Registered Member #2628
Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627
EastVoltResearch wrote ...
How much output current do you want? How much voltage droop (sag) can you tolerate per your load?
yeah, I should have mentioned that, for the output current, 100-500MA is preferable, and for the voltage droop, I couldn't care less, as long as there is sufficient current, thats all that matters to me. as for the charging chokes, I have some old school MOTs laying around (they are very big), so I can remove all thier winding, and rewind the secondary around the core, and have a charging choke, (and I can use more then one choke) other then that, I have very high powered mots, that can push alot of current through thier secondary.
First thing you want to do is get some requirements for your design.
How much output current do you want? How much voltage droop (sag) can you tolerate per your load?
From here, there are some simple equations available (Search google for C-W Multipliers) to determine what size C you need.
Can you expand on that with an example? I'm currently doing the same thing, well I've done it but CW tripled a MOT and dont know how much current I'll be losing. I used nine 10kV 0.1µF capacitors and twelve 10kV 1A diodes (full wave tripler) is it possible to calculate the current loss using these if starting with 500mA @ 2000?
Registered Member #195
Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111
I have also done what Steve McConner did with series electrolytics, just remember to use grading resistors across each cap so they charge equaly. if you set up a circuit like this there may be a bit of an inrush current on start up. if you use transformers neon sign tranies they are current limited and may reduce inrush current. another option is to create four to six series banks of 3.5Kv electrolytics and use the the banks as dubler units using series 1n4007's in a fullwave tripler. the power source for the electrolytic tripler would be 2 1kw microwave oven tranies that are out of phase and a grounded centertap to the cases.
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doubler capacitors.
