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LM2903D Datasheet(PDF) 9 Page - STMicroelectronics |
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LM2903D Datasheet(HTML) 9 Page - STMicroelectronics |
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9 / 21 page  DocID2470 Rev 14 9/21 LM2903 Typical application schematics 21 Figure 14. Low frequency op-amp with offset adjust Figure 15. Zero crossing detector (single power supply) Figure 16. Limit comparator Figure 17. Split-supply applications - zero crossing detector e l ~ 2N 2222 5 V e o R1 100 k Ω 1 k Ω 5 V 1 M Ω 100 k Ω 1 M Ω Offset adjust R S R 1 15 k Ω 0.5 μF R 2 1/ 2 LM2903 100 k Ω 10 k Ω e l 20 M Ω 5 V 1N4148 5.1 k Ω 5.1 k Ω 100 k Ω 1/ 2 LM2903 5.1 k Ω 10 k Ω e I ~ R S 2R S V (ref) high V (ref) low 2N 2222 V CC Lamp 1/ 2 LM2903 1/2 LM2903 2R S (12 V) 15 V 5.1 k Ω e o e I ~ 15 V 1/2 LM2903 |
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