WFC VIC

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Techhbrief mentions for wiregauge 0.002, 0.004 and 0.03, what are these numbers (diameter?) and to which AWG do they correspond?

Seems to be in inches Alan
 

.00314 = 40 gauge so the .002 is smaller wire then 40 gauge
.00445= 37 gauge
.0359 = 19 gauge

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Thanks.
Part 6 talks about SS 0.002 inch diameter 40+ AWG, but part 7 talks about 36 AWG for the same SS wire.

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OK I mesured my coils tonight.All of my wire is 30 gauge .010" diameter.
Primary inductance= 200mH ,  200 turns
Secondary inductance= 3H , 1000 turns
Chokes inductance= 6.5H , 2000 turns
Ferroxcube U core,the largest one they make
again my LC resonance is @10khz at @ 1kv at the cell
 
Don

Hi Don,
     I was just working out the math based on your values and this is what I've come up with:
Applied Voltage to Primary 12v @ 10khz
Primary XL = 12.56k Ohms
Sec. XL = 188.4k Ohms
L1 XL = 408.2k Ohms
L2 XL = 408.2k Ohms

Primary current @ 10khz = 12v/12.56k Ohms = 955uA
Sec.+L1+L2 = 1004.8k Ohms, current @ 10khz = 1000v/1004.8k Ohms = 955uA

As you can see the Primary current is equal to the LC current (Prim.=Sec.), this is resonance. I didn't figure in the resistance of the capacitor because it is so low that it's negligible.

-Tony Woodside-

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Are you sure about that? Did you tried it?

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these numbers are based on Don's values and he says he got resonance @ 10khz with 1kv at the cell, so these numbers show that he was getting resonance @ 10khz.

-Tony Woodside-

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Tony, if the primary is pulling 20 mA like he says, then there must be something missing from your analysis?

12v and 20 mA = 0.24 watts
at 1kv, =0.00024 amps though the cell, or 1/4 of a mA

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My calculations are based on 1st approximation which is "ideal" conditions, in electronics you have 3 approximations, 1st, 2nd & 3rd....3rd being the most detailed and in depth.

-Tony Woodside-

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I don't see how you can approximate 20 mA as 955uA

my point is we are missing some piece(s) of information here