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Registered Member #1822
Joined: Fri Nov 21 2008, 08:04PM
Location:
Posts: 300
Regardless, I am looking for design tips. I am thinking about making a small (probably) air core transformer in the area of 10:50 to give me 1mA at 10KV. An iron core would very likely be way too inductive.
I think that it would be alot easier to have a higher voltage since I have decided on a rotary spark gap and my mech engineering skills arent the greatest.
For the gap I am thinking about using a hard disk and cutting notches on the platter to interupt the arc on the outside of the platter. This will need a very high BPS due to the high frequency and low current.
Registered Member #480
Joined: Thu Jul 06 2006, 07:08PM
Location: North America
Posts: 644
cduma -
The drive motors in the HDDs you mention are DC brushless motors with very sensitive Hall-effect sensors and other delicate electronic components mounted within the motor. The aluminum platters are electrically connected to the motor's rotor, without any isolation. If you try to use the platters as direct-driven RSG electrodes, you'll destroy the motor in a millisecond, and probably also whatever type of DC power supply you are using to drive it.
You need to devise some type of RSG rotor that is electrically isolated (to whatever your HV charging voltage is) from the motor driving it.
Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
cduma wrote ...
Wow... I really should have thought of that...
I tested the SSNST with a .0003M (should mean .0003mF) cap and it would not arc... Is the impedence too low?
The output is in the tens of KHz... A cap that charges and discharges that fast would be incredibly tiny, so tiny that there would be pretty much no bang energy. You have to rectify the output with some high voltage very fast diodes.
Also, 3,600 BPS is way too high. It would leave no time to let the tank cap recharge. A cap small enough to do so, would have no bang energy. Also, that would make the resonant frequency very high on the primary coil unless you used a ton of primary turns, which means more impedance, and more inductive reactance, so less current will flow.
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Solid State NST
