370 vac vs 440 vac capacitors ?

[kefah]

What is the difference between 370 vac and 440 vac capacitors


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[Brian_UK]

70Vac is the simple answer.

Both are rated for a particular duty, the smaller one will not do the job of the larger one.

[TERRENAS]

It's the maximum Voltage that they can handle in Alternative Current.
VAC=Volts Alternative Current

[passandscore]

The voltage rating is only the maximum voltage that a capacitor should be exposed to, not the voltage that the capacitor will charge up to. A capacitor will only charge to a specific voltage level if fed that level of voltage. It is normally recommended to give a good amount of room when choosing the voltage rating of a capacitor. Meaning, if you want a capacitor to hold 25 volts, don't choose exactly a 25 volt-rated capacitor. Leave some room for a safety margin just in case the power supply voltage ever increased due to any reasons.

See links for source info:

http://www.learningaboutelectronics.com/Articles/What-does-the-voltage-rating-on-a-capacitor-mean


http://www.achrnews.com/articles/capacitors-and-single-phase-compressors

[moideen]

As I know voltage rating is very important. When replace a capacitor, never down the voltage. Use same voltage or higher than the existing.

[kefah]

The voltage rating is only the maximum voltage that a capacitor should be exposed to, not the voltage that the capacitor will charge up to. A capacitor will only charge to a specific voltage level if fed that level of voltage. It is normally recommended to give a good amount of room when choosing the voltage rating of a capacitor. Meaning, if you want a capacitor to hold 25 volts, don't choose exactly a 25 volt-rated capacitor. Leave some room for a safety margin just in case the power supply voltage ever increased due to any reasons.

See links for source info:

http://www.learningaboutelectronics.com/Articles/What-does-the-voltage-rating-on-a-capacitor-mean


http://www.achrnews.com/articles/capacitors-and-single-phase-compressors
thank u very well
that was very useful