A novel preamplifier system to improve the performance of zero-crossover optical encoders is presented. The network is based on a low-noise operational amplifier with a Zener diode feedback. We propose to exploit the non-linear characteristic of this network to reduce the angular measurement uncertainty. The circuit has been accordingly developed and tested in operation.
Diode Zener Feedback Preamplifier for Zero-Crossover Optical Encoders / G., S., Rovati, L.. - STAMPA. - (2004), pp. 2361-2364. (Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference, IMTC/04 Canada May) [10.1109/IMTC.2004.1351568].
Diode Zener Feedback Preamplifier for Zero-Crossover Optical Encoders
ROVATI, Luigi
2004
Abstract
A novel preamplifier system to improve the performance of zero-crossover optical encoders is presented. The network is based on a low-noise operational amplifier with a Zener diode feedback. We propose to exploit the non-linear characteristic of this network to reduce the angular measurement uncertainty. The circuit has been accordingly developed and tested in operation.
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