|
|
capacitance
|
formula
|
example
|
|
parallel plates
 |
A >> d2:

|
|
|
long parallel strips
 |
For w/d < 1:

For w/d > 1:

|
|
|
isolated disk
 |

|
|
|
two spheres of equal size
 |

|
|
|
isolated sphere
 |

|
|
|
concentric spheres
 |

εr: relative permittivity of dielectric between spheres
|
|
|
coaxial cable
 |

εr: relative permittivity of dielectric between conductors
|
|
|
infinetly long, thin wire
 |

|
|
  |
For h>>r:

|
h |
= |
100 |
cm |
r |
= |
0.5 |
mm |
|
C |
= |
6.7 |
pF/m |
|
|
thin wire of finite length

|

S-factor is computed automatically
(argument 2h/l or l/2h dpending on which is less than unity)
|
|
|
prallel wires over ground

|

|
|
|
prallel wires remote from ground
 |

|
|
|
parallel wires of finite length above ground

|

|
|
|
vertical aligned wires parallel to ground

|
calculated like "parallel wires over ground" with h = (h1+h2)/2
|
|
|
single layer solenoid
 |

N: number of turns
|
|
|