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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AR1011 датащи(PDF) 6 Page - Microchip Technology |
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AR1011 датащи(HTML) 6 Page - Microchip Technology |
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6 / 61 page  AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER DS40001393C-page 6 2009-2016 Microchip Technology Inc. 2.3 4-Wire Sensor A 4-wire resistive touch sensor consists of a stable and flex layer, electrically separated by spacer dots. The layers are assembled perpendicular to each other. The touch position is determined by first applying a voltage gradient across the flex layer and using the stable layer to measure the flex layer’s touch position voltage. The second step is applying a voltage gradient across the stable layer and using the flex layer to measure the stable layer’s touch position voltage. The measured voltage at any position across a driven axis is predictable. A touch moving in the direction of the driven axis will yield a linearly changing voltage. A touch moving perpendicular to the driven axis will yield a relatively unchanging voltage (See Figure 2-1). FIGURE 2-1: 4-WIRE DECODING |
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