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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN3290 датащи(PDF) 29 Page - STMicroelectronics |
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AN3290 датащи(HTML) 29 Page - STMicroelectronics |
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29 / 34 page  AN3290 Modifications for ultra wide-range operations Doc ID 18038 Rev 1 29/34 7 Modifications for ultra wide-range operations Although the board has been developed in wide-range up to 264 VAC, it can be easily modified in order to sustain ultra wide-range operation, up to 440 VAC, with minimum parts modification, thanks to the 900 V rated power section BVDss of the ALTAIR04-900. In Figure 33 the modified schematic is shown; the modifications mainly involve the input stage, which must be designed in order to meet the 440 VAC operations. Also the diodes D3, D4, and D5 must be replaced in order to sustain the higher peak reverse voltage. No modifications are needed for the transformer and the IC. The modified components are listed in the bill of material in Table 4; for other parts not specified in this table, the bill of material in Table 2 is still valid. Figure 33. Electrical schematic for 440 VAC input voltage option |
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