Published:2009/6/28 22:37:00 Author:May | From:SeekIC
Bed, yellow, and green LEDs give positive indication of oil pressure levelon electronic gage console developed for motorcycle. Transducer converts oil pres-sure to variable resistance RT, which in turn varies bias on transistors. LEDs have different forward voltages at which they light, so proper selection of bias resistors ensures that only one LED is on at a time to give desired indication of oil pressure.-J. D. Wiley, Instrument Console Features Digital Displays and Built-In Combo Lock, EDN Magazine, Aug, 5, 1975, p 38-43.
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