I wish i could but i need both DC polarities :(
I know an NST is totally overkill for this but outside of using an old fkyback without the built in diode i dont see many options.
Some 20 years ago i built this using a flyback from an old tube TV running on 12DC but it was just a curiosity and i scrapped it when building my first TC (at age 17 with no real knowledge building plate glass capacitors - lucky i didnt kill myself).
If i could find a cheap +/- HV DC generator id be happy. Could i use a single polarity and somehow shift it down so i see a +/- half the voltage?
----- Reply message -----
From: "David Speck" <Dave@xxxxxxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Subject: [TCML] Voltage/power dissapation drop across HV DC current limiting resistors.
Date: Mon, Sep 28, 2015 11:53 AM
Matt,
In today's eMail I received an offer from Goldmine Electronics for a 15
KV negative ion generator that runs off 12 VDC for $10. It's
intrinsically current limited, and you can lift it with two fingers
instead of two men and a boy like your NST corona generator.
If the polarity is right for your application, then it would be a simple
way to go. Special sale price ends 9/30. (No connection to seller, but
a frequent buyer).
http://www.goldmine-elec-products.com/prodinfo.asp?number=G20855
Dave
On 9/27/2015 9:51 PM, Matthew Sweeney wrote:
> No that is exactly correct. Another user mentioned that I should be careful
> using NST for VDG seemingly because there could be short down in the inside
> of the VDG to the HV brush, allowing potentially lethal currents up to the
> collector. I've not been able to confirm this exact reason - maybe someone
> else can chime in on this.
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