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Ground zero GZPA 1.4000DXII
Ground zero GZPA 1.4000DXII
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Old 23rd August 2017, 10:03 AM   #11
Perry Babin is offline Perry Babin  United States
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Join Date: Nov 2003
Location: Louisiana
There is no feedback without the amp working normally. The open feedback loop can make the op-amp do strange things. The 10k feedback resistor allows the op-amp to function as an audio amplifier. If the output of the op-amp is clean audio, you can see that the op-amp is functioning normally and can move on to the next stage of troubleshooting.
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Old 23rd August 2017, 10:29 AM   #12
MarioRestucci is offline MarioRestucci  Italy
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Join Date: Aug 2012
Location: NAPOLI
Quote:
Originally Posted by Perry Babin View Post
There is no feedback without the amp working normally. The open feedback loop can make the op-amp do strange things. The 10k feedback resistor allows the op-amp to function as an audio amplifier. If the output of the op-amp is clean audio, you can see that the op-amp is functioning normally and can move on to the next stage of troubleshooting.
thanks for the info.
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