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Disc_Air_Capacitor_Calculator.php    7282 Bytes    12-02-2018 11:22:32


Disc Air Capacitor Calculator


(Air dielectric inside :-)




Disc Type Adjustable Capacitor Air Core Coil



Plate Geometry

 square  

 round       half round  

Radius or Length [mm]

Spacing d [mm]

Relative permittivity

Air : 1.00059, FR4 : 4.7, PTFE : 2, more.

Capacity [pF]

 

Area [mm2]

 

Max. Voltage [kV]

(for air dielectric)

     

   




✈ Credits




The technical drawing of the capacitor (top right) is courtesy of "public domain" from wikipedia. The gold plated variable disc capacitor was in an old Hewlett Packard Synthesizer. Merci Peter !




✈ Share your thoughts



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t1 = 6459 d

t2 = 300 ms

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