# Capacitors and Inductors

Discussion in 'General Electronics Chat' started by DaDandy, Dec 16, 2008.

Dec 16, 2008
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Final tomorrow...basically know everything necessary for circuit analysis except Capacitors and Inductors.....allowed one page of notes so any help on these two parts would be great.

2. ### mik3 Senior Member

Feb 4, 2008
4,846
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What exactly you want to know?

3. ### beenthere Retired Moderator

Apr 20, 2004
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Dec 16, 2008
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how to solve the problems with capacitance, with the graphs....

missed the classes on these chapters and have no clue.

Dec 16, 2008
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I understood the DC circuit anaylsis with resistors and such.........

until they added capacitors it lost me.

6. ### SgtWookie Expert

Jul 17, 2007
22,182
1,728
Calculate capacitance in series like you calculate resistance in parallel.
Calculate capacitance in parallel like you calculate resistors in series.

Dec 16, 2008
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ok thank you that is a start.

Dec 16, 2008
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- the time constant

- storage phase and discharging

the formulas Vc= E^-t/Tao(??)

this is the kinda stuff i need to know but not sure how to relate it.

9. ### mik3 Senior Member

Feb 4, 2008
4,846
63

Dec 16, 2008
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hmmm...hopefully i write down all the formulas from the book and be able to do something with them.

Dec 16, 2008
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Inductors are basically treated exactly the same way as Capacitors as far as the formulas go and solving for inductors in series and parallel?

12. ### dyeraaron Active Member

Oct 27, 2008
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Capacitors hold a charge and release after an amount of time (nanoseconds). Caps are measured in Farads. They can be polarized or unpolarized. They act as a filter in some circuitry. take for instance a single pole circuit....resistor parallel to a cap...if the cap is grounded, this would be a low pass filter and vise versa with the resistor ( this would be high pass ) Capacitors block DC Voltage. Their reference designator is C

Inductors are short and sweet...they are measured in Henries. Their reference designator is L. They induce the voltage into a circuit. They also produce a phase shift in AC circuitry...thats more detailed though. They carry no resistance.

13. ### dyeraaron Active Member

Oct 27, 2008
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Oh and like Sgt. wookie said...to find values of mukltiple caps in a circuit....if caps are in series..you add up their individual values and divide by how many there are and you have your total capacitance......and if they're in parallel...you add them up and that total is your total capacitance....