Microcomputer comprehensive protecting device communication circuit
The utility model discloses a microcomputer comprehensive protecting device communication circuit, increased by an optical coupling isolator on the basis of traditional MAX485 communication circuit, the 2nd optical coupling isolator and the 3rd optical coupling isolator, an optical coupling isolator...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a microcomputer comprehensive protecting device communication circuit, increased by an optical coupling isolator on the basis of traditional MAX485 communication circuit, the 2nd optical coupling isolator and the 3rd optical coupling isolator, an optical coupling isolator establishes ties between the 1st pin of MAX485 chip and microcomputer comprehensive protecting device, the 2nd optical coupling isolator establishes ties between the 2nd pin of MAX485 chip and microcomputer comprehensive protecting device, the 3rd optical coupling isolator establishes ties betweenthe 4th pin of MAX485 chip and microcomputer comprehensive protecting device. When many microcomputer comprehensive protecting device pass through 485 bus connection to backstage monitoring device, use the utility model relates to a communication circuit because an optical coupling isolator, the 2nd optical coupling isolator and the 3rd optical coupling isolator's existence, a certain microcomputer comprehensive protectin |
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