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| | Surgical diathermy apparatus - Patent 4844063 |
 | | A capacitive neutral plate system is employed as return electrodes, along with injection of a compensating potential in series opposition to the potential drop across the capacitive neutral plate system. |
 | | The neutral plate is assumed to be composed of (m+n) elements with (m+n) compensated branches, m of which are intact and of admittance Y.sub.B. There are also n elements each with a partial short depicted by identical resistance, R.sub.f, across the capacitive element. |
 | | So, for a 10 element neutral plate with 5 equal partial shorts (m=n=5), a reactance of X=800 ohm and a reactive tolerance of DX=80 ohm, the current, i.sub.Fn, giving maximum power dissipation is about 11.79 mA and the power dissipation, P.sub.n, is 0.667 W, which is quite modest. |
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