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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN2350 датащи(PDF) 22 Page - STMicroelectronics |
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AN2350 датащи(HTML) 22 Page - STMicroelectronics |
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22 / 41 page  Hardware and mechanical equipments AN2350 22/41 Figure 15. The conditioning circuit for one absolute encoder The sector C represents the incremental 12-bit encoder, whose outputs are two sinusoidal signals (available in orange and green wires) shifted to each other by 90 degrees, with an offset of 2.5 V and a peak-to-peak voltage of 1.1 V. Since these signals can not be directly managed by the microcontroller, it has been necessary to develop a conditioning circuit whose outputs are digital signals. This conditioning circuit for each sinusoidal signal consists of a comparator whose output is at a logical high level (5 V) every time the input signal level is over 2.5 V, and at logical low level (0 V) every time the level of the input signal is below 2.5 V. A detail of the conditioning circuit for one of the incremental encoders of the wafer handler is shown in the following figure. |
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