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| Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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23rd Aug 2015, 8:29 pm
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#1 |
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Retired Dormant Member
Join Date: Dec 2013
Location: Winchester, Hampshire, UK
Posts: 288
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Do capacitors delay the current passing through them?
I've just been fixing an old desk fan with a dirty switch, and happened to notice the motor, which is a PSC type. This got me thinking, if the capacitor creates a second, out of phase supply for the other coils, it presumably is delaying the current passing through it? This isn't however a property I've ever heard attributed to capacitors before? So, despite looking around, I've not turned up much about this. If anyone can add anything further about what is going on, I'd be interested to know? Any ideas much appreciated.
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23rd Aug 2015, 9:25 pm
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#2 |
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Octode
Join Date: Feb 2006
Location: Bristol, UK.
Posts: 1,042
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Re: Do capacitors delay the current passing through them?
The capacitor doesn't 'delay' as such. It puts in a phase shift. With a cap there has to be voltage across it before a current can flow through it. The amount of shift is proportional to the cap value and the frequency.
http://hyperphysics.phy-astr.gsu.edu...ric/phase.html Malcolm |
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23rd Aug 2015, 10:12 pm
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#3 |
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Retired Dormant Member
Join Date: Dec 2013
Location: Winchester, Hampshire, UK
Posts: 288
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Re: Do capacitors delay the current passing through them?
Hi Malcolm,
Your link (and one of the pages linked to from it http://hyperphysics.phy-astr.gsu.edu.../phase.html#c3) explains everything. Thank you. |
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