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How component size decreases when frequency decreases?
The impedance of a component (inductor or capacitor) will change with frequency - resistor impedances will not. Inductor impedance - j*w*L Capacitor impedance - 1/(j*w*C) L = inductance, C = capacitance, j = i = imaginary number, w = frequency in radians The actual inductance and capacitance does not change with frequency, only the impedance.
Does the size of a capacitor matter?
Yes, the size of a capacitor "matters" just as much as the size of a resistor "matters". In both a capacitor and a resistor "size" refers not only to the electrical value of the item but to its current-carrying capacity: a small resistor will burn up if you try to push too much current through it. A big resistor will be able to carry a much higher current than a small one having the same resistance value.Similarly, a small capacitor will be destroyed if you try to push too much current through it and a big capacitor will be able to carry a much higher current than a small one, even if both have exactly the same capacitance value. Capacitance values are measured in Farads (F), microFarads (uF) and picoFarads (pF). Just as a resistor has "Resistance " measured in Ohms, a capacitor has "Capacitive Reactance" or "Impedance", measured in Ohms.The Impedance of a capacitor varies with the frequency of the alternating current passing through it. (This is quite different behavior to a resistor: the Resistance of a resistor does not change with the frequency.) If you look in a book about electrical engineering components you will be able to learn how the Capacitive Impedance is calculated according to the frequency. "The impedance of a capacitor is inversely proportional to the frequency - that is, for very high-frequency alternating currents the reactance approaches zero - so that a capacitor is nearly a short circuit to a very high frequency AC source. Conversely, for very low frequency alternating currents, the reactance increases without bound so that a capacitor is nearly an open circuit to a very low frequency AC source. This frequency-dependent behaviour accounts for most uses of the capacitor." [From Answers.com]
What is on the model number of a HVAC compressor to tell what size capacitor in needed?
3100y20q800cl
What size capacitor you need for a 1000 watts amplifier?
It takes 1 farad for every 1000 watts so u need 2 farads.
What happens when start capacitor is slightly over sized?
C=QV it doesnt depend on size.
What is the difference between capacitor and capacitance?
A capacitor is a device that stores an electrical charge, or if you prefer- resists any change in voltage applied to it. Capacitance is a measure of the size or ability of a capacitor to do that. This is the Farad
What factors should I consider when determining how big of a capacitor I need for my project?
When determining the size of a capacitor for your project, consider factors such as the voltage requirements, capacitance value, size constraints, and the intended use of the capacitor. It is important to choose a capacitor that can handle the voltage and provide the necessary capacitance for your project while fitting within the physical space available.
How does the basic geometry of a parallel plate capacitor not affect its capacitance?
The basic geometry of a parallel plate capacitor does not affect its capacitance because capacitance is determined by the area of the plates and the distance between them, not their shape or size.
Why should you discharge the capacitor before measuring the capacitance?
If you don't it could fry your equipment. A capacitor can hold a charge for anextremely long time even years depending on the physical size and capacitance. It can hold a strong enough charge to kill.
What do you measure capacitors in?
Capacitors are characterized by two values: their voltage, exceeding which will damage the capacitor (sometimes leading to a violent explosion), and their capacitance, as the name suggests. The voltage is expressed in volts. The capacitance is expressed in Farads. One (1) Farad is an amount of charge that makes the voltage across the capacitor terminals to rise by 1 Volt. If a 10mA current flows into the capacitor and it causes the capacitor's voltage to rise by 1V every second, the capacitor's capacitance is 10 milifarads. 1 Farad is a lot of charge, so for most applications, submultiples (microfarads and milifarads, mostly) are commonly used. A curious note: the more voltage a capacitor can handle, the (usually) bigger the size of it. At low voltages and low capacitance, the capacitance doesn't influence the size that much, though.
Can you replace a capacitor that is smaller in size but same value?
If, by smaller in size, you mean physical size, then yes. You just need to keep the same capacitance and minimum voltage rating. Also, in a power supply filter application, you need to consider the maximum RMS current rating.
Can we use big capacitor in place of a small one?
For physical size-yes, if voltage rating is the same or more. For capacitance size-it depends on where the cap is used. In an audio circuit, it may affect frequency response or distortion.
Is it possible to run 0.2 amps at 12 volts for 1 minute on a fairly small and cheap capacitor?
Yes, it is possible to run 0.2 amps at 12 volts for 1 minute using a capacitor. The size of the capacitor needed will depend on its capacitance value and the voltage rating, as well as the energy storage capacity required for the given load. It would be advisable to select a capacitor with sufficient capacitance and voltage rating to handle the input specification.
What happens to the DC load voltage when the filter capacitor is changed?
When the filter capacitor in a DC power supply is changed, the load voltage can be affected based on the capacitor's value. Increasing the capacitance generally results in a smoother DC output voltage with reduced ripple, leading to a more stable load voltage. Conversely, decreasing the capacitance can increase voltage ripple and cause fluctuations in the load voltage, potentially affecting the performance of connected devices. It's essential to choose the appropriate capacitor size based on the specific load requirements and ripple tolerance.
What is the SI unit of a capacitor?
Capacitors are measured in Farads or microfarads.
What does the farad rating mean in capacitors?
The rating or 'size' of a capacitor, called its "capacitance", is related the amount of charge the capacitor can store, to the amount of energy it holds when it stores some charge, and to the opposition of the capacitor to the apparent flow of alternating current through it. If a capacitor has a capacitance of 1 farad, then -- One coulomb of charge stripped off of one plate and added to the other plate produces 1 volt of potential difference between the plates. -- The energy stored in the capacitor is 1/2 the square of the voltage across it. -- Its impedance is (0.159 divided by the frequency) ohms. The farad is an enormous capacitance. A typical capacitor used in a 'lumped' circuit ... the kind of construction where you would buy a capacitor and solder it in ... has a capacitance in the range of maybe 10 picofarads (trillionths of a farad) to maybe 100 microfarads (millionths of a farad).
How you reduce capacitor size while keeping the capacitance?
You can reduce the size of the plates (thus making the capacitor smaller physically) if you also do one or both of the following:move the plates closer together (which also reduces size, but lowers the breakdown voltage)use a dielectric with a higher dielectric constantOf course these changes must be made at the time of manufacture, they cannot be done to change an existing capacitor.
