AN7415 FM stereo Demodulator
The circuit shown below is from a PLL FM stereo demodulator designed depending on the AN7415. C1 is the coupling capacitor input that blocks any DC voltage present on the multiplexed signal input. LED D1 is a LED indicator and R1 is its current limiting resistor. C4 and C5 seem to be decoupling capacitors in DC for the left and right output channels.C2 and C3 to be noise bypass capacitors for the
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