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Registered Member #579
Joined: Mon Mar 12 2007, 09:45AM
Location: Burntwood, Staffs, England
Posts: 46
YES I HAVE SEARCH IT BEFORE POSTING ... ONLY MOT REFERENCES
That said I could do with some help and education: I have aquired a 3Kv X 3Kv 37mA NST and would like to protect it ( if it is needed) from drawing too much current. I WILL FIT A TERRY FILTER
How do I calculate / design/ measure/ test a ballast for my project (Do I: make one ( sorry 2)- platic pipe , filled with transformer laminate, wrap with wire; connect to dummy load and the NST and check the voltage before and after ... calculate the current restriction .. or visa versa ??
I have been building ignition coil Hv supplies so far BUT I ALSO HAVE A 5KV 100ma NST
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
NSTs don't need any ballasting because they are internally current limited. Just be careful when driving a Tesla coil, to always use a "Larger Than Resonant" tank capacitor.
Registered Member #190
Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
I is also not a bad idea to use a fused variac to power up your primary transformer as this will allow you to catch problems before you achieve full power and start frying components/wires.
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ballast for NST
