codan
New Member
Hi,
I am reading conflicting things about self Capacitance when Shielding a Coil, can someone help..
IE: I have a coil of wire --say 25 turns, 250mm dia formed from looping in my hands & bound together with a non conductive thread.
I have read on some sites that there is no affect on Capacitance when the Conductive Shielding is Grounded & then on other sites they say it affects Capacitance grounded or not?
Now my questions are, how do i work out the coil to shield capacitance if i wrap a conductive shielding material around this to eliminate stray fields from interupting the recieved signals.
Firstly with no AIR gap between the coil & shielding material?
Then also by introducing an Air gap between the coil & the shielding material how does this effect the results?
Or is there an online Calculator to do this?
I understand i will have to leave a small gap in the ends of the shield material to avoid unwanted eddy currents circulating in it.
Thank You
I am reading conflicting things about self Capacitance when Shielding a Coil, can someone help..
IE: I have a coil of wire --say 25 turns, 250mm dia formed from looping in my hands & bound together with a non conductive thread.
I have read on some sites that there is no affect on Capacitance when the Conductive Shielding is Grounded & then on other sites they say it affects Capacitance grounded or not?
Now my questions are, how do i work out the coil to shield capacitance if i wrap a conductive shielding material around this to eliminate stray fields from interupting the recieved signals.
Firstly with no AIR gap between the coil & shielding material?
Then also by introducing an Air gap between the coil & the shielding material how does this effect the results?
Or is there an online Calculator to do this?
I understand i will have to leave a small gap in the ends of the shield material to avoid unwanted eddy currents circulating in it.
Thank You
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