Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 230
inging the lamp carbons together closes the follow-ing circuit: A. C. terminal C to tap 5, through auto trans-former to tap 4, through lead D to lamp, through lampto terminal C, through contacts of relay to tilting magnet,through tilting magnet to tap on lead A. This excites thetilting magnet and… … Fig. 119 tween the mercury pools as soon as they unite. This cur-rent acts like a short-circuit on the tilting magnet, andthe bulb rights itself, causing a spark which breaks downthe cathode resistance and starts current through the bulbfrom the main anodes. This current flows through therelay coil…
Motion picture theaters · Electric lighting
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