Capacitors and Inductors

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rattus

Senior Member
Re: Capacitors and Inductors

Ed, perhaps I should say that the cap size is one of the factors determining the rate of change unless you connect the cap across a low Z source. Now consider an RC circuit driven by AC. The rate of change is still affected because the amplitude of the wave across the cap will be smaller although the frequency is not changed. OK, I admit that is a trivial point, but I hate to be wrong!

Now to muddy the waters, who has worked with analog computers? As I recall, an inductor was used as the analog of mass, and a capacitor was used as the analog of a spring. Your solution printed out on a strip chart.

[ January 11, 2005, 10:12 PM: Message edited by: rattus ]
 

Ed MacLaren

Senior Member
Re: Capacitors and Inductors

As I recall, an inductor was used as the analog of mass,
Yes, it was.

I used an (imaginary) friction-free mass example to explain why current lags voltage in an inductive AC circuit.

As in the capacitive example above, the force exerted by the person represents the AC voltage. The reciprocating motion represents the current.

Ed

Cap-Ind.gif


[ January 12, 2005, 09:26 AM: Message edited by: Ed MacLaren ]
 
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