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What he said.
Also, if NIX1:1 and NIX1:2 are connected together internally in NIX1, and pin 2 is grounded, then the dummy load will always be connected. Can you look at LED DUM to see if this is occurring? Or am I misinterpreting your schematic?
Don't be offended. I just don't know what your level of knowledge is.
Do you know Ohm's Law?: V=I*R ?
Iout= V(HV)/(R14+R15+R(L2)+R9).
11.928mA=24kV/2.012 Megohms
I'm talking about your targets. " 24KV (on target) and 12mA (20mA is target) ".
In order to get at least 20ma at 24kv, your load has to be 1.2Meg or less.
Air gaps have essentially infinite resistance until they break down. Then they're on the order of milliohms.
Why does your power supply have 1.2 ohms series resistance?
Are the values of R8 and R9 set in stone, or can they change?
With 24kv, you can only get 12 ma through 2 Meg.
You didn't say "20KV 5mA 13KHz", but it was a comment on the schematic that you posted in #18.
Please post MJE18004 spice model. Without it, your sim won't run.
Your latest simulation in post #18 said you were getting "20KV 5mA 13KHz", but I ran the sim and got 1.3kV@323 kHz.
What's up with that?
I have made some mods, and currently have 9.5 kv p-p @20 kHz, but the pulse width is only about 2.2us.
Don't know if this is an improvement or not.
Well, I feel a little stupid. That transistor works a lot better than I thought it would.:oops:
You could have saved my bruised ego if you had included that spice model when you posted the .asc file.:p
Do you realize that you don't have a spice model for Q5? I'm guessing you got that error message, and ignored it, so LTSpice uses a VERY basic model. This model has a beta of 100 at any collector current, and it has nothing to reduce switching speed; no capacitance, no storage time, no ft. Real...
Well, here's my thoughts on that:
If your charge controller unit (CCU) can take 48V on the input, puts 20 amps into 48V, and runs at 99% efficiency, then it will only dissipate (24V*20A*1%) 4.8Watts. That means that your HEP-600-48 PSU will only have to deliver (480+4.8) about 489 Watts. That's...
The charge controller's 99% maximum efficiency spec is pretty much useless. What is important, in your case, is minimum efficiency. If you knew that, you should be able to determine worst case input current draw, which would tell you what size transformer (or, possibly better yet, switching...
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