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Common Impedance Coupling, Common Power Supply

15. December 2020 17:01 by Christian in Grounding, Noise Coupling, Troubleshooting
When two circuits share a common ground, the ground voltage of each one is affected by the ground cu

See Ground Return & Common Impedance Coupling

When two circuits share a common ground, the ground voltage of each one is affected by the ground current of the other circuit.

When two circuits share a common power supply, current drawn by one circuit affects the voltage at the other circuit.

 

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