How much value is needed to block RF signals!?

Discussion in 'Wireless & RF Design' started by aj_silverthunder, Dec 1, 2009.

  1. aj_silverthunder

    Thread Starter Active Member

    Jun 6, 2009
    what value of inductive reactance is needed to block 80Mhz signal from the power supply! here is a circuit for reference " ".
    is 50K inductive reactance of the choke is able to block the 80Mhz signal fron the power supply in the given schematic!
    inductive reactance:-
    XL = 2xPIxfxL

    So, if you i a 100uHy choke, at 80Mhz

    XL=2x3.14x80E6x100E-6= 50240 ohm. The 100uHy choke will act as a series resistence of 50K at 80Mhz .