Rolls-Royce Archives
         « Prev  Box Series  Next »        

From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Calculation of the capacity of a condenser.

Identifier  ExFiles\Box 34\1\  Scan014
Date  28th December 1917
  
W.H. 235 a (100) T) (S.F. 575. 16-4-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2354.

X.2512. 28.12.17.

X2012 CALCULATION OF CAPACITY OF CONDENSER.

Let capacity reactance be w ohms.

w = volts/amps. = 1/pK (dimensions LT⁻¹)

So that K = 1/pw farads.

= 10⁶/pw mf.

p = 2π f = 262 sec⁻¹
∴ K = 3820/w mf.

If volts = 205
amps. = C
K = (3820 C)/205
= 18.6 C.

If C be measured as volts on pocket voltmeter
C = V/37.8
∴ K = .49 V mf = .49 x reading.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙