ore, from B to D, through any circuitjoining B and D. The system may be regarded as a Wheatstonesbridge circuit, in which the resistances automatically change withthe changes of sign of the alternating electromotive force applied atA and C. The Nodon valve and Pollaks rectifier are practical… … -\AAAA Lampresistance Fig. 40.—Arrangement of Two Aluminium Cells for Accumulator Charging (H. K. Lewis). K, Aluminium cells. A, Accumulators to be charged. themselves. The current given out by these forms of rectifier isnot smooth, but for most practical applications it answers almostas well as if…
X-rays · Radiography
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