Errmm, that's not the equation for an inverting amplifier.The gain is calculated as:
where:
R7 is R1, and
R2 is the sum of R6 and R5 when R5 is not shorted, or just R6 when R5 is shorted.
There is no transformer or coil shown on the schematic. However, it would not affect the gain of the opamp, but might affect the output of the circuit.
by Jake Hertz
by Duane Benson
by Duane Benson
by Jeff Child