Electronics & Software – Tips & Guide


How does a capacitor work for both AC and DC

How does a capacitor work for both AC and DC?

Think as if we had a water pipe completely blocked by a flexible membrane. such an arrangement prevents the continuous flow of water (such as continuous electricity), but would allow two-way vibrations of low amplitude (such as alternative electricity). the more elastic the membrane (greater capacity) the greater the quantity of water that it can move.

Role of the capacitor in the reciprocating circuits:

in an alternating circuit, the capacitor inverts its charges when the current alternates and produces a delay voltage (in other words, the capacitor supplies a main current in the circuits and reciprocating networks).

1. less power supply In such circuits, the capacitor is connected in series with the load because it is known that the capacitor and the inductor in pure form do not consume energy. they simply take the power in one cycle and restore it to charge in the other cycle. in this case, it is used to reduce the voltage with less waste of energy. Split Phase Induction Motors

2: Capacitors are also used in an induction motor to divide a single-phase power supply into a two-phase power supply to produce a rotating magnetic field in the rotor to capture this field

Correction and improvement of the power factor : The capacitor bank is installed after a precise calculation. basically, it provides the reactive power that was previously routed from the power system, reducing losses and improving system efficiency.

Role of the capacitor in the DC circuit

in a DC circuit, the capacitor once charged with the applied voltage acts as an open switch. Power Conditioning

1 .: In DC systems, the capacitor is used as a filter (most of the time). its most common use is to convert an alternating power supply into an alternating rectifier (such as bridge rectifier)

2. Decoupling capacitor: a decoupling capacitor is used, under which we have to decouple the two electronic circuits. other words, the noise generated by a circuit is grounded by a decoupling capacitor and this does not affect the performance of other circuits.

3. Coupler coupling: as we know, the capacitor blocks the DC current and allows the alternating current to cross it.