to Sebofato

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Sebosfato,

Thanks for the reply..  this is during load conditions

The load is my 8 x 8" test cell with two positive outer plates gapped as a sandwich about 1/2 mm with a center negative plate.  Voltage  probe at the positive lead after the 25ns diode jumps to 350 volts at .1 amp and peaks and levels off at 650 spike volts at .8 amp with 130 volts off the variac, wide open.  Simple coil driver 555/lm393 pwm is used.   

I know I could understand why the toroid should not step down the voltage if someoine would point me in the right direction.  The base pulse amplitude is 130 volts on the osccope with the 650v spikes.

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If this is confusing, Air at 0°F has no heat, where there is available heat in a temp of 1°F.
 

I disagree with this statement . There is still heat to be taken from air untill it has reached absolute zero -459 F .

But when its that cold the price to get the heat out is too much .

I also studied AC and heating .

In fat I can setup a control loop with nothing but a thermocouple , an comparator , 2 resistors and a relay .

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Hi Kickbackemf

i'm not sure.

Is your water distilled?
What is the secondary resistance?
Are you using a diode? (you mention positive and negative)
Is the secondary getting hot?
What wire is used on secondary ? in mm or awg
Any gas on the cell?
How may amps on the primary?
Frequency?
PRimary voltage?
Primary and secondary inductance?

Please answer all this questions as i can valuate whats happening.


If is distilled water could be a kind of resonance or your circuit behaving as open circuit
If the water is distilled and wire is small you may have what i call voltage transformation according to ohms law in the transformer or in the wire.

If you are stepping down the voltage you are stepping up the amperage. And more amps * resistance = voltage.

wait for your answer
 
 

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i'm not sure.

Is your water distilled?

yep


What is the secondary resistance?

1.1 ohm, primary is 2.2 ohm

Are you using a diode? (you mention positive and negative)

ultrafast diode after donut before outside plates

Is the secondary getting hot?

donut heats after five minutes of over 2 amps at 150v dc pulsed at any frequency, stays cool under one amp at 150dc pulsed, 1/3 lpm by bottle displacement at 2 amp & 150vdc

What wire is used on secondary ? in mm or awg

16 awg silver plated stranded one layer 360 deg

note, 20 awg silver plated stranded as four layer 360 degree primary over that


Any gas on the cell?

see above

How may amps on the primary? 

variable, max voltage is reached at around one amp


Frequency?  12.5khz

PRimary voltage?  150vdc

Primary and secondary inductance?

PI is .7mH

secondary inductance is 17.2mH

Please answer all this questions as i can valuate whats happening.


If is distilled water could be a kind of resonance or your circuit behaving as open circuit
If the water is distilled and wire is small you may have what i call voltage transformation according to ohms law in the transformer or in the wire.

If you are stepping down the voltage you are stepping up the amperage. And more amps * resistance = voltage.

wait for your answer
 
 

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Seb,

It may be that and I'm not so sure that regular 50hz type transfomers with regular sinewave inputs should be used to evaluate what happens when you dc pulse a transformer with a diode following it before the load.   

The pulse goes through the donut unchanged yet now with a really nice uniform ringing of about a dozen or so swings before damping.