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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 14, Iss. 4 — Jul. 1, 1927
  • pp: 323–326

A DIRECT CURRENT POTENTIAL TRANSFORMER

PRESTON B. CARWILE

JOSA, Vol. 14, Issue 4, pp. 323-326 (1927)
http://dx.doi.org/10.1364/JOSA.14.000323


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Citation
PRESTON B. CARWILE, "A DIRECT CURRENT POTENTIAL TRANSFORMER," J. Opt. Soc. Am. 14, 323-326 (1927)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-14-4-323


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References

  1. G. Planté, Comptes Rendus, 85, pp. 794–6; 1877.
  2. This cycle of connections will have to be repeated many times in order to charge the second group to the voltage (1+x)V, which is approached as an asymptote.
  3. It is worthy of notice that Lim F= Lim (1+x)1/x= Lim (1+1/z)z= Napierian base, e. x=0 x=0 z=∞
  4. The expression in brackets is 0 when x=0. Its derivative is -(1+x), which is negative for positive values of x. The factor in brackets is therefore negative when x is positive. The factor in front of the brackets is positive for positive values of F and x. Hence the product of the two factors is negative when x is positive.
  5. Clearly such a device is a transformer rather than a generator, since no Work is done on the charges coming from the original source.

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