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Registered Member #570
Joined: Wed Mar 07 2007, 03:41PM
Location: Winchester Uk
Posts: 42
I used to use two MOT secondaries in series and they did not last long. Changing to three in series solved this and I am currently using four for added reliability.
I removed the I sections from them to reduce down the inductance and to prevent them saturating. They work really well at 6kW level without problems and barely get warm. They are around 4H each.
Registered Member #570
Joined: Wed Mar 07 2007, 03:41PM
Location: Winchester Uk
Posts: 42
It all depends on what primary capacitor value you have and what the highest break rate is that you require. In practice you will find that the value is not too critical. 10-20H should work quite well. Say you want to have the maximum break rate of 300bps, this would mean that the charging inductor and primary capacitor should resonate at 150Hz.
Registered Member #1034
Joined: Sat Sept 29 2007, 12:50PM
Location: Chillicothe, Ohio
Posts: 154
I'm curious, what exactly is the purpose of a charging choke, and how does it work?
The charging choke is an inductor that is used for ballasting in DC powered Tesla coils. Without it, your DC power source would be shorted out as soon as the spark gap fired.
Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
Firefox wrote ...
I'm curious, what exactly is the purpose of a charging choke, and how does it work?
The answer to how it works is by using inductance. It works just like the primary on a transformer. If you had no choke, like roger said, it would be a direct short on your power supply. But like i said, with a choke, it will act like a transformer primary and will let electricity go through but only a certain amount. It is basically a ballast. And if you use one mot and a tripler it will keep the current down enough so that when the capacitor charges, it will discharge through the rsg without shorting the power supply. I know this was very VERY unclear but i am trying to help the best i can.
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Charging Choke
