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MP566-II Tube microphone preamplifier with HPF
Green LED blinks when there is no signal
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Topic: Green LED blinks when there is no signal
Today
at 09:20:41 AM
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JPK
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Green LED blinks when there is no signal
This problem arose when we started using a new batch of TL074. The solution is simple:
- Replace R44 (1M) by a 100k 1%-1/4W.
- Replace C19 (100nF) by a 1uF-50V ceramic.
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MP566-II Tube microphone preamplifier with HPF
Green LED blinks when there is no signal
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