Can i use higher voltage capacitor

This will cause the rotor to hesitate at those spots that are uneven. This hesitation will cause the motor to become noisy, increase energy consumption, cause performance to drop, and cause the motor to overheat. The start capacitor creates a current to voltage lag in the separate start windings of the motor. The current builds up slowly, and the armature has an opportunity to begin rotating with the field of current. A run capacitor uses the charge in the dielectric to boost the current which provides power to the motor.

On the replacement capacitor the voltage rating must be equal to or greater than the original. Many techs think they must replace a v capacitor with a v capacitor. You can almost always replace a capacitor with one of a higher voltage. Thus, a capacitor lets more current flow as the frequency of the source voltage is increased. The apparent resistance of a capacitor in an AC circuit is less than its DC resistance.

A capacitor with higher voltage rating will probably have slightly higher ESR and may have higher leakage current in normal operation especially for electrolytic types , and the capacitance value may drift a bit more over time. If you are using a uF 50V cap to replace a uF 25V cap, that is generally completely safe to do. Replacing a 50V capacitor with a 25V capacitor is a bad idea. The cap will probably fail, dramatically, in short order. Can I replace a start capacitor with a higher uF?

What does 50 uF mean on a capacitor? Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc. Please consider donating to help us continue to serve you. Page 1 of 2. Thread Tools. View Public Profile. Send a private message to Stabby. Find More Posts by Stabby. Send a private message to brig Find More Posts by brig Send a private message to Richard Ellis. Find More Posts by Richard Ellis.

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Similar Threads. Create a free Team What is Teams? Learn more. Can I use a higher voltage rating when replacing capacitors? Ask Question. Asked 4 years, 8 months ago. Active 2 years, 4 months ago. Viewed 67k times. The TV starting buzzing on dark colors, etc. Just wanted to double check before I damage my TV. James Morton James Morton 1 1 gold badge 1 1 silver badge 3 3 bronze badges. Add a comment. Active Oldest Votes. You're in the UK, right? Rather than taking your chances on eBay, you're better off if you go to an online distributor.

There are a fair number of them, and the ones that spring to mind are Digikey, Mouser, Newport, Allied Electronics and Arrow, but there are others as well. The problem with eBay is that you really have no idea of the reputation and reliability of the seller.

For caps you're probably OK, but it's easy to get burned by the lowest price.