OK, the test procedure was a five strand coil, with two strands in series being powered. Using a transistor to short one of the remaining strands reduced the output by one half, at least.

So coil shorting in this case is non-productive.

Ron

Quote from: webby1 on October 17, 2016, 06:10:56 PM
Hi Ron,

Where are you recovering from?

How long are you shorting the other coil?

I was recovering from the powered coils

As Carroll said, both pulses the same length

My theory of the moment is that turns ratio is critical, so I should have had less turns and a shorter pulse on the short (as you pointed out)

Thanks, Ron

Hi guys,

Please go back and look at the schematic I posted in post 755.  I pulsed the primary with one half of the secondary shorted.  I collected the collapsing energy from the secondary.  I have not had time to try collecting from the primary so I don't know how well that would work with this test.  I was using a normal off the shelf Radio Shack small transformer as you can see in the video.  The primary is rated at 120 volts and the secondary is center tapped with 12-0-12 output.  I also was only pulsing the primary with 12 volts but the cap on the secondary still went well above that.  If you watch the video again you can see the effect on the scope of having the shorting action or removing the shorting action.

Carroll

Quote from: citfta on October 18, 2016, 06:18:59 AM
Hi guys,

Please go back and look at the schematic I posted in post 755.  I pulsed the primary with one half of the secondary shorted.  I collected the collapsing energy from the secondary.  I have not had time to try collecting from the primary so I don't know how well that would work with this test.  I was using a normal off the shelf Radio Shack small transformer as you can see in the video.  The primary is rated at 120 volts and the secondary is center tapped with 12-0-12 output.  I also was only pulsing the primary with 12 volts but the cap on the secondary still went well above that.  If you watch the video again you can see the effect on the scope of having the shorting action or removing the shorting action.

Carroll

Carroll, I was not implying that your circuit didn't work --- just that I wondered if could be transposed to a JB coil. Well I found out that it doesn't work that way.


I keep in mind Edison's quote, I should print it out and put it above my bench --- "I have not failed, just found ten thousand things that don't work"


Ron

Ron,

I didn't think you were implying it didn't work.  I was just trying to help you to get it to work.   Also getting the polarity right on the pulsing side will make a big difference on the secondary side.   I used my scope to make sure I was hitting the collector of the shorting transistor with a positive going pulse when I pulsed the primary.  I still want to try some other ideas but have been very busy with family obligations.  I  think erfinder suggested I not pulse the primary so I guess that means to pulse one side of the secondary or maybe all of the secondary.  So many things to try and so little time.

Carroll