Hi everyone,
Why is there usually a capacitor connected between two connectors of some instruments such as a voltage supply, or between the supply line of a breadboard and its groud plate?
Thanks,
Albert
- posted
20 years ago
A basic question
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- posted
20 years ago
To provide a short-circuit path for noise which is injected into the power buss by the circuitry on the board. The power supply, if not mounted on the same board, cannot efficiently do this. The bypass capacitors compensate for the fact that the power wiring has nonnegligible resistance and inductance.