230 VAN NOSTKAND'S EISTGUSTEEEING MAGAZINE. regulators operating- to supply current is pressed upward by insulated spring in proportion to the requirements of a E. F and G are stop-pins, and I is an system. artificial resistance. Before taking up this subject, how- In the ( position shown lever A… … Fig. 77. Electro-Magnetic Switch. interruption of the circuit at any one lever A. Lever C is in contact with cam lamp would, without it, result in extin- D, but not with lever A. The current, guishing all the lamps in circuit, will be therefore, passes from the + point described. through the coils…
Engineering
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