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Capacitor and DC Triplers

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When a manufacturer makes a cap they make them for DC or AC right? So how make to have ratings of 16v or 30V then at whatever microfarads?

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The solution examines capacitors and DC triplers to make them have a rating of 16V or 30V.

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When a manufacturer makes a cap they make them for DC or AC right? So how make to have ratings of 16v or 30V then at whatever microfarads?
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When capacitors are manufactured, they are mainly made for AC circuits. In AC circuits, capacitors are used to compensate for inductors. Transmission lines and machines have inductances which make the power factor to deviate from unity P.f. and hence caps are used to ...

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