I posted on this topic a while ago, but it was more general, so I'm opening a new thread so nobody has to be distracted by the older replies, as I've a specific question this time around.
I've been pondering over the schematic for the MXR Microamp found here, and that damn R3 resister is driving me nuts. What is its purpose? I was told previously that its helps in the frequency-gain aspect, but how and why? I did some monkeywork using the open & short capacitor tests, and these are the time constants I got for each individual capacitor:-
Short-circuit capacitor test:-
C1's tau: C1(R2)
C3's tau: C3(R6+R5)
C4's tau: C4(R8//R7//R2)
C5's tau: C5(R9+R10+R6+R5+R4)
Open-circuit capacitor test:-
C2's tau: C2[R4//(R5+R6+R10+R9)]
As you can see, R3 plays no part in any of them! Please help.
I've been pondering over the schematic for the MXR Microamp found here, and that damn R3 resister is driving me nuts. What is its purpose? I was told previously that its helps in the frequency-gain aspect, but how and why? I did some monkeywork using the open & short capacitor tests, and these are the time constants I got for each individual capacitor:-
Short-circuit capacitor test:-
C1's tau: C1(R2)
C3's tau: C3(R6+R5)
C4's tau: C4(R8//R7//R2)
C5's tau: C5(R9+R10+R6+R5+R4)
Open-circuit capacitor test:-
C2's tau: C2[R4//(R5+R6+R10+R9)]
As you can see, R3 plays no part in any of them! Please help.
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