My boss told me to add a RC power filter to my LM324 op amp power input to reduce noise input/output. The op amp power input has very low impedance, so it accepts noise and will pass high noise through to output. Adding a capacitor in order to get rid of output noise makes sense to me, why in the world place a resister before the power in pin?
He wants me to add a resistor first (50 Ohm) and then place a capacitor after, then comes the input. Resistor is in series with LM317 and LM324, cap is parallel with these and connected to ground.
I do not understand this at all so I assume I am missing some concepts.
He wants me to add a resistor first (50 Ohm) and then place a capacitor after, then comes the input. Resistor is in series with LM317 and LM324, cap is parallel with these and connected to ground.
I do not understand this at all so I assume I am missing some concepts.