Nov 19, 2009 #1 A aj_silverthunder Full Member level 3 Joined Jul 30, 2009 Messages 179 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Location asia Activity points 2,601 doubt on ferrite! why is ferrite core used in RF chokes!i think to reduce the size of the RF choke,for example. a 1mH RF choke with ferrite core will be smaller than the 1mH air core rf choke.am i right! what is SRF and what is its role in a RF choke!
doubt on ferrite! why is ferrite core used in RF chokes!i think to reduce the size of the RF choke,for example. a 1mH RF choke with ferrite core will be smaller than the 1mH air core rf choke.am i right! what is SRF and what is its role in a RF choke!
Nov 19, 2009 #2 flatulent Advanced Member level 6 Joined Jul 19, 2002 Messages 4,624 Helped 489 Reputation 980 Reaction score 151 Trophy points 1,343 Location Middle Earth Activity points 46,689 Re: doubt on ferrite! It is to raise the inductance so that fewer turns can be used. Since ferrite has high resistance, it does not add to the parasitic capacitance.
Re: doubt on ferrite! It is to raise the inductance so that fewer turns can be used. Since ferrite has high resistance, it does not add to the parasitic capacitance.
Nov 20, 2009 #3 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,419 Helped 14,749 Reputation 29,780 Reaction score 14,100 Trophy points 1,393 Location Bochum, Germany Activity points 298,094 doubt on ferrite! SRF means self-resonance-frequency. Choke operation as a RF block is provided up to a frequency slightly above SRF.
doubt on ferrite! SRF means self-resonance-frequency. Choke operation as a RF block is provided up to a frequency slightly above SRF.
Nov 20, 2009 #4 A aj_silverthunder Full Member level 3 Joined Jul 30, 2009 Messages 179 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Location asia Activity points 2,601 doubt on ferrite! how to calculate the SRF of a inductor!