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LAMP_READOUT_INVERSION

2016-08-07 14:30  
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LAMP_READOUT_INVERSION
Used if lamp output is required with switch open, or if two lamp outputs ore required (one lamp coming on for switch open and the other for switch closed). All lamps are type 39, rated 6.3V at 0.36 amp. With scr off, voltage across L1 and L2 was 0.8V with 6.3V across L3, with no visible light from L1 and L2. With scr on, there is about 6.3V across L1 and L2, with no visible output from L3.-Inversion Technique for Incandescent tamp Readouts, Electronic Circuit Design Handbook, Mactier Pub. Corp., N.Y., 1965, p 208.