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Capacitance(Seiden Yoryo,British: electrostatic capacity) IsCapacitorSuch asInsulationWas doneconductorIn, how muchchargeIs a quantity that indicates whether or not is stored.Capacitance(Denkiyoryo,British: electric capacity), orcapacitance (British: capacitance).
Capacitance is a unitVoltageStored aroundchargeGiven as.The quantity symbol is C ,UnitsFarad Use [F].1 on an object boltWhen the voltage of 1 is given CoulombIf you store the charge of, the capacitance of the object is 1 farad.
The capacitance of 1F is very large.Usually used around usElectronic partsIn the capacitor as, one millionth of 1F (100)-6) ofMicro farad [μF] or one trillionth (1).) ofPico Farad [pF] is often used.
Capacitance of isolated conductors
If the conductor is spherical and electrically isolated, it will be as follows.
Capacitance of parallel flat conductor
Also, the voltage between the flat conductors V [V] gives the following, and the capacitance of this object C [F] is required.
Parallel connection of capacitance
When the capacitance is connected in parallel, the combined capacitance C Is each capacitance Ci Total voltage equal to [F] V Since [V] is applied, the charge at that time is Q If it is [C], it will be as follows.
The combined capacitance is equal to the sum of each capacitance.
Capacitive series connection
When the capacitance is connected in series, the whole V When a voltage of [V] is applied, the charges do not flow between each element at that time, so the charges are equal, so use that. Q Let it be [C].Its combined capacitance C [F] is each capacitance Ci Voltage to [F] Vi If [V] is applied, it will be as follows.
The combined capacitance is equal to the reciprocal of the sum of the reciprocals of each capacitance.
The voltage sharing of each capacitance is as follows.
Not in SI units,Daraf (British: daraf) May be used.This is the reverse spelling of farad, the unit of capacitance, of the electrical engineer.Arthur Edwin Kennelly 1936 It is named after. Every 1 farad is equal to 1 daraf.