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Old 15th April 2012, 04:05 PM   #21
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Yes. A "coupling" capacitor.
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Old 15th April 2012, 06:12 PM   #22
DF96 is offline DF96  England
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A coupling capacitor does not present HF capacitance, but only at LF where it doesn't matter for this problem. Cable capacitance will do it, an RF filter, or any Miller capacitance from the first stage.
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Old 23rd April 2012, 06:51 AM   #23
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If the shield of a cable is connected for the ground return on both the ends, u will get hum.

Gajanan Phadte
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