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Finally we get some useful results. As you can see, the period of the ringing is about 8 usec, which means your resonant frequency is about 125kHz. With 1000 turns of wire, I doubt that the probe capacitance is adding more than 10% to the stray capacitance of the coil, i.e., the actual resonance without the probe is still probably close to 125kHz. There is no way I can think of that you can drive this at 2MHz and get anything significant out of it. The secondary is a bandpass filter. I think your transformer is a dead horse, at least at the frequency you have in mind. You might want to divulge what you are trying to accomplish in more detail. Maybe I or someone else can come up with an alternate solution.turbobill said:These pics are with a 100kohm resistor between pin 3 and the secondary. The first one is at 10usec/div, second is at 20usec/div and third is at 100usec/div.
I'm on Mountain Daylight time (Idaho). Where are you?BTW, what time zone are you in, Roff?
Roff said:the actual resonance without the probe is still probably close to 125kHz. There is no way I can think of that you can drive this at 2MHz and get anything significant out of it. The secondary is a bandpass filter. I think your transformer is a dead horse, at least at the frequency you have in mind. You might want to divulge what you are trying to accomplish in more detail. Maybe I or someone else can come up with an alternate solution.
I'm on Mountain Daylight time (Idaho). Where are you?
Roff said:How much current do you need at 3kV?
turbobill said:We'd like to get around .4A, but as close as possible or practicle will work for now.
Roff said:
That's 1.2 kilowatts! If you could get 100% efficiency, that would require 100 amps from your battery. You would be extremely lucky to get 70% efficiency. How many batteries do you plan to have in parallel?
BTW, I'm assuming you want 3kV DC, not pulsed.
Hero999 said:Do you mean 0.4A at 3kDC or do you mean that the supply shall have a short circuit current of 0.4A?
It's a lot of power if you look at it from a 12V battery standpoint. What are you charging the battery with? How long do you expect the battery to last?turbobill said:Yes, 3kV DC, not pulsed. Or you could say 1200 Watts, or 12 one hundred watt light bulbs. It's really not that much if you look at it from an electricity point of view, but it is if you look at it from an electronics p.o.v..
I mean 0.4A at 3kV DC.
Roff said:What are you charging the battery with?