Dual resonator PLL test


I made a mock-up dual resonator using two 9 turn coils and two 0.05uF capacitors (actually 52nF) so I could play about with the PLL settings without generating enormous voltages and colossal discharges.

After fiddling around for a long time I was able to get bursts on either pole and even "Antonio" style ones that went straight up the middle between the poles. These could not be locked reliably with the PLL however, and the adjustments for soft switching were very sensitive (iow- I only ever got it to work once)

On the other hand, bursts using the upper pole were stable and easy to lock. The PLL made a good job of compensating when the secondary was loaded, even to the point of total open or short circuit.

Bursts using the lower pole were only possible if some hard switching of leading current could be allowed over the first few cycles. Any attempt to tune this leading current out just made the system lock to the upper pole instead.


antonio_mistuned.html
antonio_mistuned.JPG
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antonio1.html
antonio1.JPG
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antonio2.html
antonio2.JPG
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antonio3.html
antonio3.JPG
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antonio4.html
antonio4.JPG
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loosecoupling.html
loosecoupling.jpg
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lowerpole.html
lowerpole.JPG
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prototypedriver.html
prototypedriver.JPG
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sec_shorted.html
sec_shorted.JPG
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setup.html
setup.JPG
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tightcoupling.html
tightcoupling.jpg
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upperpole.html
upperpole.JPG
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