Author Topic: is resistance calculated by the output or input?  (Read 311 times)

Offline benet

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is resistance calculated by the output or input?
« on: May 21, 2021, 01:17:50 AM »
When trying to find the resistance of a Tesla coil circuit using ohms law should you be measuring by the input volts in amps or the output volts in amps?  I am trying to calculate the impedance of a circuit and to do that I need to know the resistance. But none of the sources I found specify whether it's going off of the input or the output, which is important to clarify when working with a circuit like a Tesla coil which changes the amps to Volt ratio using Transformers.

Offline Twospoons

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Re: is resistance calculated by the output or input?
« Reply #1 on: May 21, 2021, 12:19:43 PM »
Are you trying to find the input resistance or output resistance? There's your clue ...

Offline benet

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Re: is resistance calculated by the output or input?
« Reply #2 on: May 22, 2021, 01:19:37 AM »
Like I said above I'm trying to find the impedance of a circuit which requires me to know the resistance of the circuit. But my problem is I don't know whether that means the output or input resistance. 

Offline imp

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Re: is resistance calculated by the output or input?
« Reply #3 on: September 11, 2021, 07:30:49 PM »
Like I said above I'm trying to find the impedance of a circuit which requires me to know the resistance of the circuit. But my problem is I don't know whether that means the output or input resistance.

Do not confuse Resistance with Reactance. The DC resistance of much of a Tesla Coil's circuitry which includes coils is pretty low, while the reactance of the combined tuned circuit is exceedingly high AT RESONANT FREQUENCY. This fact allows us to "tune in" a single frequency while excluding all others (communications tuning).

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Re: is resistance calculated by the output or input?
« Reply #3 on: September 11, 2021, 07:30:49 PM »

 


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