Where the OVERUNITY using INDUCTION COILS comes from (eg Joule Thief)

[tinman]

I had an interesting comment in an email today-name withheld.

Quote: Then the answer is no, you don't get more instantaneous current flow from the coil the faster the magnet passes the coil.

Below are a couple of scope shot's
I placed a 100 ohm resistor across the coil i have been using in my test's,and the scope across the coil/resistor parallel circuit.

The first scope shot is of the magnet passing the coil at the slow speed.
The second scope shot is with the magnet passing the coil at very close to twice the speed.

You might like to note the rms value of the current in both scope shot's,where that rms value is calculated over 16 cycles in each.


Brad

[forest]

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[antijon]

Could someone help me clarify this?

We know that a generator's internal resistance reduces power transferred to a load, but doesn't the inductive reactance of the generating coil also play a part in the total impedance?

Is it fair to assume that as frequency increases, so does the total impedance?

[tinman]

Could someone help me clarify this?

We know that a generator's internal resistance reduces power transferred to a load, but doesn't the inductive reactance of the generating coil also play a part in the total impedance?

Is it fair to assume that as frequency increases, so does the total impedance?

Is impedance the same in these two cases?
Are you sending current through a coil,that produces a magnetic field-or are you  sending a magnetic field through the coil,that induces a current ?.

Brad

[tinman]

Ok,the video on my low speed test.

Will be building the test bed for the mid to high speed test tomorrow,as that gets a little more tricky to short the coil each cycle.

https://www.youtube.com/watch?v=xANse1LZi74


Brad