The LED was powered indirectly from the tacho output terminals. In order to avoid destroying the LED at high tacho velocities (VY was 3.5V/I000rpm) a low dropout voltage current source (National Semiconductor LM334) was used as aanbsp;...
Title | : | Fiber Optic Sensors III |
Author | : | Ralf Th Kersten |
Publisher | : | Society of Photo Optical - 1989 |
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