modified 11 years ago

What causes voltage magnification

01:54:39

How does my voltage increase with each cycle? 

published 11 years ago

UncleRick

11 years ago

At first I thought all three waves were being amplified. This one had me tied up for an hour or so. I put the generator output on the scope as red. The gen. voltage is constant. The current levels are also constant. The only voltage that changes is the voltage at the node between the inductor and the capacitor. That pair is a tuned circuit. That tuning is why the voltage is increasing. The generator is tuned to the resonant frequency of that combination of induction and capacitance. IMHO.

11 years ago

Thanks uncle rick. I get that its at resonance, I just dont know how the voltage is increasing if my cap and inductor are 180 degrees out of phase. I should have 0v across both. How does this potential add to the voltage on each cycle, or does it?

UncleRick

11 years ago

I think that the potentials are equal & opposite. Cancelling each other out. (DC wise anyway)

UncleRick

11 years ago

The AC is sort of like a pendulum between the two. The swing of the voltage shows the power balancing to the inductor and back onto the capacitor. etc. etc. etc. Then averaging out to zero when viewed by a DVM. But the scope reveals the truth.

bilben08

11 years ago

Electrical and magnetic fields run perpendicular to each other

LJ1234

6 years ago

It's a degree of voltage magnification. https://en.wikipedia.org/wiki/LC_circuit#Applications

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