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PHASE LAG
Hi all,
Although I have successfully set up a superpole running two 5 filar coils, I think that it was more by chance that it worked successfully.
I wanted to start a new thread to explore the intricacies of setting up and problem solving issues associated with primarily multicoil monopoles. Although I suspect superpoles would be the same.
Just to make following the issues easier can I suggest starting each reply with a suitable heading relating to the issue covered so that when others follow the thread at a later date that searching through to the problem being discussed is clearly identified.
My first issue is running two coils on opposite sides of the wheel. I have tried linking them together by connecting the trigger from the first to the trigger rail of the second.
What i get is a slowing of the wheel and generation of heat from the transistors on the secondary coil (like repulsion mode). I have also tried a pot in series to adjust for variation in the trigger required between the coils, although unsuccessfully.
Both are wound counter clockwise (attraction mode) and both work well independently.
I am able to run them simultaneously with independent triggers and it generates quite some RPM, the interesting thing is that running dual traces on the Oscilloscope I find that the H waves on the collectors (one on each coil) are out of step by 2.2msec. 2.2msec is about 1/3 to 1/2 of the H wave out of step. This would explain the heat given off by the transistors on the second coil when connected together as it would be fighting against the motion of the wheel. This also reduces the effectiveness of adding the coincident pulses together when run independently.
While the easiest solution would be to buy more transistors and match all the proposed 70 devices (10 coils, eventually) and the resistors and diodes etc, by the time we finish it could be a very very expensive exercise. So I think we need to work out how to tune coils with independently matched sets.
Has anyone else seen this phase lag when dealing with multicoils in the past? What causes it? The coils are aligned correctly by the way so it is not related to being off centre! I've tried twisting the coils off centre to experiment with potentially varying the phase lag to no benefit or change.
Thanks
James
Hi all,
Although I have successfully set up a superpole running two 5 filar coils, I think that it was more by chance that it worked successfully.
I wanted to start a new thread to explore the intricacies of setting up and problem solving issues associated with primarily multicoil monopoles. Although I suspect superpoles would be the same.
Just to make following the issues easier can I suggest starting each reply with a suitable heading relating to the issue covered so that when others follow the thread at a later date that searching through to the problem being discussed is clearly identified.
My first issue is running two coils on opposite sides of the wheel. I have tried linking them together by connecting the trigger from the first to the trigger rail of the second.
What i get is a slowing of the wheel and generation of heat from the transistors on the secondary coil (like repulsion mode). I have also tried a pot in series to adjust for variation in the trigger required between the coils, although unsuccessfully.
Both are wound counter clockwise (attraction mode) and both work well independently.
I am able to run them simultaneously with independent triggers and it generates quite some RPM, the interesting thing is that running dual traces on the Oscilloscope I find that the H waves on the collectors (one on each coil) are out of step by 2.2msec. 2.2msec is about 1/3 to 1/2 of the H wave out of step. This would explain the heat given off by the transistors on the second coil when connected together as it would be fighting against the motion of the wheel. This also reduces the effectiveness of adding the coincident pulses together when run independently.
While the easiest solution would be to buy more transistors and match all the proposed 70 devices (10 coils, eventually) and the resistors and diodes etc, by the time we finish it could be a very very expensive exercise. So I think we need to work out how to tune coils with independently matched sets.
Has anyone else seen this phase lag when dealing with multicoils in the past? What causes it? The coils are aligned correctly by the way so it is not related to being off centre! I've tried twisting the coils off centre to experiment with potentially varying the phase lag to no benefit or change.
Thanks
James
I am looking forward to your results, if you look insideJohns class A amps he dies just that to bias them all correctly.
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