Eliminating the pop on a PTT electret condenser circuit using a NO switch

Im looking for a version of this circuit (which eliminates the 'pop' caused by DC voltage powering an electret condenser) that works with a NO switch. The switch in the circuit below is NC.


Is this possible?

Im using a generic walkie talkie covert PTT mic, which I will terminate appropriately into a lectrosonics SMDB transmitter. (circuit diagram on page 11); http://www.lectrosonics.com/europe/phocadownload/SMB_E01_Series_Man.pdf

Thank you in advance!! Rob

by greentree
February 20, 2018

Why not use a DPDT switch? One Pole can be used to provide the NO power switch and the other to provide the NC mute function.

by mikerogerswsm
February 28, 2018

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