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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TPL0102 датащи(PDF) 32 Page - Texas Instruments |
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TPL0102 датащи(HTML) 32 Page - Texas Instruments |
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32 / 48 page  set LOAD set V I R = 200 Ÿ Vcc TPL0102 OPA317 H W L 1 nF 10 k 1.2 k Vcc 150 k Vcc Load+ Load- RLOAD TPL0102 H W L Vset Rset ILOAD Voltage Divider Mode Rheostat Mode 32 TPL0102 SLIS134C – MARCH 2011 – REVISED SEPTEMBER 2015 www.ti.com Product Folder Links: TPL0102 Submit Documentation Feedback Copyright © 2011–2015, Texas Instruments Incorporated 8.2.3 Variable Current Sink Figure 35. Variable Current Sink Schematic 8.2.3.1 Design Requirements DESIGN PARAMETER EXAMPLE VALUE Load Current Range 0 µA to 1.33 mA 8.2.3.2 Detailed Design Procedure Both potentiometers within the TPL0102 can be used with an OPA317 op amp and N-Channel MOSFET to produce a variable current sink. The first potentiometer, configured in voltage divider mode, is used to set the input voltage to the OPA317. The second potentiometer, configured in rheostat mode, is used to set the span of the current (ILOAD) running through RLOAD. The load current for the circuit is shown below: (13) |
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