Jon Boat Wiring: Diodes & Transfer Switch

[newfutile]

Impedance is dependant on the frequency of the signal,
it's a bit like if a tree falls in the woods, does it make a sound if no one is there to hear it.

 

[mainline]

Impedance is dependant on the frequency of the signal,
it's a bit like if a tree falls in the woods, does it make a sound if no one is there to hear it.

Signals themselves (like AC or DC) are not impedance. Impedance is the property of the circuit that affects how a signal behaves within it.

 

[sunray]

Signals themselves (like AC or DC) are not impedance. Impedance is the property of the circuit that affects how a signal behaves within it.

OK so what is the impedance of a 10μF capacitor?

 

[mainline]

OK so what is the impedance of a 10μF capacitor?

The impedance would change depending on the signal Z = -j / (2πfC)

 

[sunray]

The impedance would change depending on the signal Z = -j / (2πfC)

So the impedance is totally dependant on the signal applied to it?

 

[mainline]

So the impedance is totally dependant on the signal applied to it?

The capacitance plays a part.

 

[Avo Mk8]

So the impedance is totally dependant on the signal applied to it?

There are additional secondary parameters inherent in any real physical capacitor, such as the internal reactance (Equivalent series resistance ESR, and equivalent series inductance ESL) which are also dependent on frequency, and, yes, the impedance will depend on the frequency you measure it at.

Graphic calculator of capacitor impedance over frequency

Graphic calculator of capacitor impedance over frequency.

alternatronicstest.xyz

 

[sunray]

The capacitance plays a part.

So without frequency/other signal there is no detectable impedance.

 

[mainline]

So without frequency/other signal there is no detectable impedance.

Electrical impedance - Wikipedia

en.wikipedia.org

 

[sunray]

Electrical impedance - Wikipedia

en.wikipedia.org

Which takes me back to my original statement of one month ago where I stated

Impedance is ALL to do with the signal

Yes the resistance and reactance is there all the time but without a signal it is passive, not possible to measure it

 

[mainline]

Which takes me back to my original statement of one month ago where I stated

Impedance is ALL to do with the signal

And as said, that statement is wrong.

 

[mainline]

Yes the resistance and reactance is there all the time but without a signal it is passive, not possible to measure it

It can be calculated.