How Does a Capacitor Increase Voltage in a Circuit?

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A capacitor does not directly increase the voltage output in a circuit; rather, it enhances the stability of the output voltage. When used with inductance in an AC voltage source, a capacitor can increase voltage output, provided losses are minimal. In rectified DC circuits, added capacitance can reduce ripple, potentially raising the average output voltage. In AC circuits with inductive loads, capacitors supply reactive current, allowing the power supply to focus on the real part of the load. This reduction in current demand can lead to a decrease in voltage drop, effectively increasing the voltage seen by the load.
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I have heard that a capacitor increases the voltage of output in a circuit can anyone explain it
 
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jeevansai said:
capacitor increases the voltage of output in a circuit
It does not. You may have heard that a capacitor increases the stability of the output voltage of a circuit.
 
jeevansai said:
I have heard that a capacitor increases the voltage of output in a circuit can anyone explain it
Yes, in conjunction with inductance of the AC voltage source it can increase voltage output. Loses must be realitively small for that to happen. Easiest way to see it is to draw the phasors diagram. Typicall example is capacitively loaded transformer.
 
It is a very generic statement - in a rectified DC case ( like a wall wart) the added capacitance can help reduce the ripple, this can, in many cases increase the average output voltage. In an AC case - if the load has a large inductive portion ( most do) adding capacitance provides the current to the inductive (reactive current) portion of the load - so the supply only needs to supply current to the Real part of the load - less current in the supply will decrease the voltage drop and increase the voltage.
 

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