Confirmation of OU devices and claims

[seychelles]

sorry about the cap addict that i am..

[WhatIsIt]

Rick, AKing,

What is the difference between your setups and Itsu setup?


Thanks!

[Hoppy]

Rick, AKing,

What is the difference between your setups and Itsu setup?


Thanks!

Good question!

[seaad]

Hi
Have performed this test in the simulator LTspice XVII
I used the same coils as ITSU's but made the test at 200 kHz
with some minor adjustments of the capacitors values to maximise the output voltage.
A load resistor of 10 k-Ohm was chosen.
A resistor is inserted after the ideal square wave generator to simulate ITSU's gate driver impedanse somewhat. The switch SW can be closed
to use the ideal  gate driver (with exteme low impedanse).

Regards Arne

[itsu]

Gyula,

thanks,   i will try to vary the frequency ± 50-80KHz while monitoring the middle dip and max voltage.



seychelles,

thanks, i see what you mean, and will try that.


seaad,

thanks for doing that, very nice.

The figures not quite resemble what i measure (12V square 50% duty cycle @ 200mA input and
3.7KV Volt1 voltage), but that probably is due to the 30 Ohm gate driver impedance resistor.
Could be my gate driver (IXDD614) has a much lower impedance.

But it nicely simulates the behaviour what i see when adding more and more coils.

1 coil  @ 0.025 CF results in 500V @ 165mA input and induces 37V.
8 coils @ 0.025 CF results in 107V @ 35mA input and induces 7.5V.

So the generated RF / magnetic power (if you call and calculate that this way) drops from 82.5W (500 x 0.165)
to 3.7W (107 x 0.035) which is by 95.5%.

The induce voltage in the satellite coils drops from 37V to 7.5V  which across a 10K resistor means (p=u²/r)
from 140mW to 6mW which is by 95.8%.

Please correct me if i am wrong.

Itsu