| 摘要 |
<p>1477047 Testing indicator lamps WESTINGHOUSE ELECTRIC CORP 2 Sept 1974 [18 Sept 1973] 38267/74 Heading G1U A number of indicator lamps 10, which connected across the low-voltage windings 12 of transformers 14 and which respond to signal generating circuits (not shown) via leads 22-25 connected to the high-voltage windings 16, are tested by applying a signal to the high-voltage windings from a test generator via leads 28. Diodes 26, 32 prevent current flow from any one signal circuit to another via the transformer windings and common return 20.</p> |
