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A capacitor relies on the time it takes for the voltage across it to reach a certain value. When it is fully discharged, it acts like a piece of copper wire. ie: it conducts. The voltage across it now is zero. When a voltage is applied to it, it begins to charge, and so the voltage measured across it's terminals increases. This takes time. How much time depends on the voltage applied resistor connected to it and the value of the capacitor.This voltage is then used to energies a relay, turn a transistor on, fire an SCR, and lots of other things.
What else can I help you with?
What is meant by capacitor?
A capacitor is an electrical or elctronic semi conductive material which have the ability to store electrical charge and discharge when needed, and also used for timing a circuit and finally used for filtering in a circuit. A capacitor is made up of two plates seperated by die-electric strength or material. Thanks
What is the function of capacitor across the supply to the fluorescent lamp when it is used?
A capacitor is placed across the supply of a fluorescent lamp circuit to correct the power factor
What does a capacitor do in an amplifier circuit?
not sure
Can we use AC capacitor in surge suppression circuit DC?
A capacitor is a capacitor, no matter what circuits you use it in. There is no difference between one used in AC and one in DC, except perhaps the size that is appropriate.
What is use of capacitor in electronics circuit?
to limit the current and to use it as a back up battery capacitors are used ..
Can a 47 microfarad capacitor in a microtimer circuit be replaced with a 470 microfarad capacitor?
No, the value is far too small. If it is the capacitor used for the timing, the time/s will be reduced to one tenth of the deisred value.
What does cap do in a circuit?
Cap is short for capacitor, so what it does really depends on the specific circuit it is being used in. It could be for power supply smoothing, noise reduction, part of a timing circuit to mention just a couple. It depends what other components are being used with the cap(capacitor) and how they are connected to each other.
What happens to the lamp when the capacitor is removed?
When the capacitor is removed from a circuit containing a lamp, the behavior of the lamp depends on the circuit configuration. In a basic circuit where the capacitor is used for filtering or smoothing, the lamp may flicker or turn off due to the loss of charge stabilization, leading to inconsistent voltage. If the capacitor is part of a timing or oscillation circuit, the lamp may stop functioning altogether. Overall, the removal of the capacitor typically disrupts the normal operation of the lamp.
Why is capacitor leakage a problem in a RC timer circuit?
Because the timing is set by the time constant of a resistor and a capacitor. With R in ohms and C in Farads, the time-constant is RC in seconds. If the capacitor leaks the timing will be wrong.
What is the relationship between capacitor resistance and the overall performance of an electronic circuit?
The relationship between capacitor resistance and the overall performance of an electronic circuit is that the resistance of a capacitor affects the charging and discharging times of the capacitor, which can impact the timing and stability of the circuit. Higher resistance can lead to slower charging and discharging, potentially affecting the circuit's functionality and efficiency.
What is meant by capacitor?
A capacitor is an electrical or elctronic semi conductive material which have the ability to store electrical charge and discharge when needed, and also used for timing a circuit and finally used for filtering in a circuit. A capacitor is made up of two plates seperated by die-electric strength or material. Thanks
Why the oil filled capacitor is used in permanent split capacitor motor?
An oil filled capacitor is used in (PSC) motor because the capacitor is in the circuit the whole time the machine is running. The capacitor is oil filled to cool it due to being in circuit the whole time
Can a 5 mfd capacitor be used in place of a 7.5 mfd capacitor?
Sometimes. The exception is when the capacitor is used as a "timing" device. But 7.5 mfd and 5 mfd are so large that one would guess that they are not being used as timing devices.
Can a 7.5 mfd capacitor be used in place of a 5 mfd capacitor?
Sometimes. The exception is when the capacitor is used as a "timing" device. But 7.5 mfd and 5 mfd are so large that one would guess that they are not being used as timing devices.
Why capacitor is used in between the bias circuit?
Capacitor is used in biasing circuits to block the passage of DC signals.
What is need of capacitor and resistor in circuit?
because without using capacitor or resistor in a circuit,it cant be complete.Resistor is used to protect the circuit by giving a certain amount of voltage.Capacitor is used to charge and discharge purpose.
What does polyester capacitor do in a circuit?
same as any other capacitor. however they are usually used where higher voltages are.
