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Parasitic capacitance is the unwanted capacitance between:
1. A signal line and other signal line.
2. A signal line and earth.
3. A signal line and power supply line.
Not that, I remember all (even most) of the effects, let me answer you with whatever I remember:
1. Unwanted coupling between two different signals, resulting in "crosstalk" between two signals. One signal interferes with other and other interferes with one.
2. attenuation / distortion of high frequency signals which have high impedance / limited current capability.
3. Ringing (unwanted oscillations) rising edge and falling edge of the signals rectangular / square wave.
Wiki User
∙ 8y ago
Wiki User
∙ 14y agoA: PARASITIC CAPACITANCE is not to be confuse with capacitor value since it is physically there is just a proximity capacitance which invariably is never desired in a circuit
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What is parasitic inductance of capacitor?
A: PARASITIC means like a parasite is there to offset the actual circuitry it can be inductance and/or capacitance A capacitor is usually wound in a coil this coil if frequency is hi enough will behave as a small coil has been added to the circuit. Hi frequency PWM capacitors have indeed four lead to reduce not eliminate this inductance
what is Parasite?
the parasites which complete their life cycles in one host
What is the function of the resistor into capacitor?
A RC circuit is a simple filtering circuit. The impedance of R will stay the same across the frequency band. The impedance of C will vary according to 1/jwC (j = i = imaginary number, w = omega/frequency in radians, C = capacitance in Farads). As frequency varies from low frequency to high frequency, an increasingly smaller amount of the signal voltage will "drop" across the capacitor. This is known as a first order (one reactive element, the capacitor) low pass filter if the desired signal is measured across the capacitor. If measured across the resistor, this would be a first order high pass filter. Edit: if you are talking about ESR (equivalent serires resistance), it is a parasitic component inside a capacitor. Theoretically, you don't want it but it's there.
What effect does the series resistance of a capacitor used in a capacitor filter have on diode current and ripple voltage compared with an ideal capacitor of no resistance?
The effective resistance of the capacitor reduces the ripple current through the capacitor making it less effective in its function of smoothing the voltage. But if the capacitor filter is fed by a transformer and diodes, the resistance of the transformer exceeds that of the capacitor.
Regarding Capacitors- can any general capacitor work on a circuit diagram that shows a polarized capacitor or do you need a special capacitor for polarization?
A Polarized capacitor means that the capacitor is polarity sensitive. if you were to connect the capacitor incorrectly the capacitor would blow up. A capacitor that is marked as being polarity sensitive will have the negative lead labeled usually with a white strip. These capacitors can only be used in conjunction with a dc source. Always consult a professional when installing electrical equipment.
What is parasitic capacitor?
It constantly "drains" the circuit
What is parasitic inductance of capacitor?
A: PARASITIC means like a parasite is there to offset the actual circuitry it can be inductance and/or capacitance A capacitor is usually wound in a coil this coil if frequency is hi enough will behave as a small coil has been added to the circuit. Hi frequency PWM capacitors have indeed four lead to reduce not eliminate this inductance
What does a disc capacitor do?
A disc capacitor does exactly the same thing that any other capacitor does, with one difference: it has the lowest value of parasitic inductance of any type of capacitor. As inductance is exactly the opposite property to capacitance, its presence in a capacitor is very undesirable in many applications and can sometimes result in circuit instability.
Should you worry about capacitor lead length in a circuit?
Capacitor lead length is a consideration in a circuit when the frequency involved is sufficient the make the parasitic capacitance and inductance of the leads important.
Why a capacitor does not accept AC?
A capacitor conducts AC but do not conduct DC because it is meant to store charge.
What is meant by capacitor charging problem?
storing of energy
What is the basic difference between disc type capacitor and electrolytic capacitor?
A: it is the value disc type are small while electrolytic are big in value.The dielectric in a disc capacitor is ceramic, the dielectric in an electrolytic capacitor is a very thin corrosion layer on one of its metal foil plates.The conductive plates in a disc capacitor are two metal thinfilms on opposite sides of the ceramic, the conductive plates in an electrolytic capacitor are one of the metal foil plates and the electrolyte paste between the metal foil plates.A disc capacitor is ready to sell and use as soon as it has been built, an electrolytic capacitor will not work at all when it is first built (it is an electrical short circuit) it must be formed by passing a controlled current through it for several hours to cause corrosion of one of the metal foil plates.The parasitic inductance of a disc capacitor is less than that of any other type of capacitor, the parasitic inductance of an electrolytic capacitor is greater than that of any other type of capacitor. This makes disc capacitors better for use in circuits involving high frequencies and electrolytic capacitors better for use in circuits involving very low frequencies and/or DC.The parasitic resistance of a disc capacitor is extremely high resulting in extremely low leakage, the parasitic resistance of an electrolytic capacitor is low resulting in high leakage. In fact this leakage current in an electrolytic capacitor is essential to keeping it healthy and working in use, without it the corrosion layer dielectric slowly dissolves away into the electrolyte paste. Reversal of polarity of an electrolytic capacitor dramatically hastens this, rapidly removing the corrosion layer and shorting the capacitor resulting in both uncontrolled heating and electrolysis of the water in the electrolyte paste; the extremely rapid generation of gases causes a violent explosion of the electrolytic capacitor!The capacitance of a disc capacitor tends to be low in relation to its physical size compared to other types of capacitor, the capacitance of an electrolytic capacitor is higher in relation to its physical size than any other type of capacitor. This is due mostly to the differences in the thickness of the dielectrics.
Does lead length matter in capacitance of a capacitor?
In general the length of the leads contributes only a negligible amount to the capacitance of a capacitor. However at high enough frequencies excessive lead length can contribute an undesirable amount of parasitic inductive reactance, causing problems in circuit operation.
How do you spell parasitic?
The correct spelling is "parasitic."
What is meant by a capacitor's working voltage?
A capacitor's working voltage is the maximum voltage that the device can take without danger of breaking down the insulation between the plates. Above the working voltage, the insulation begins to deteriorate and the capacitor may short, explode, or simply stop working depending on the design of the part.
Are sponges parasitic?
No, sponges are not parasitic.
What is meant by RC coupled amplifier?
an amplifier, where the resistor and capacitor get coupled to provide high oscillations hence by which amplifications increases at high degrees
