What is the definition of "signal to ground capacitance" of a coaxial cable. I know what capacitance is, but I'm not sure whether it is just the same thing.
What’s the definition of “signal to ground capacitance” of a coaxial cable? What’s the difference between it and normal capacitance
cablescapacitancecapacitor
Related Solutions
There are two reasons why speaker cables are not shielded/screened:
The signal is so powerful that any interference would not be noticed.
Speakers are not very sensitive; it takes a lot of power to create sound on a speaker
This is why speakers are connected to an amplifier.
Input to amplifiers are very sensitive and so input should use shielded/screened cables.
P.S. If you have a 100W amp the good ones use about 48V. So you have at least 2A, with peaks higher. Peaks might hit 20A but for a very short time. To hear this your speaker cable needs to be thick.
It is very simple. You should convert any amplifier and attenuation in dB format. and formula is like this
Receiver_signal(dB)=Signal_at_antenna(dB)+Antenna_gain(dB)-Cable_Loss(dB)-other_loss(dB)
As your Receiver_signal should be above minimum signal strength with a margin for example(15 dB). Place this amount for Receiver_signal and compute Maximum cable loss. Cables are standards. Please find cable loss at this table. So you can find which cable is suitable for your work.
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Best Answer
It's exactly the same thing. It is the capacitance from the signal wire on the inside to the shielding on the outside.