Open -phase detecting circuit
The utility model relates to an open -phase detecting circuit, three circuits are drawn from the open -phase detecting point to the circuit, the decibel is PART1, PART2 and PART3, the PART1 line is through resistance R1 contact resistance R2, resistance R2 meets resistance R8 and zener diode Z1 thro...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model relates to an open -phase detecting circuit, three circuits are drawn from the open -phase detecting point to the circuit, the decibel is PART1, PART2 and PART3, the PART1 line is through resistance R1 contact resistance R2, resistance R2 meets resistance R8 and zener diode Z1 through diode D1 and diode D2 respectively, the PART2 circuit meets resistance R4 through resistance R23, resistance R4 meets resistance R and zener diode Z1 through diode D3 and diode D4 respectively, the PART3 line meets resistance R6 through resistance R5, resistance R6 meets resistance R8 and zener diode Z1 through diode D5 and diode D6 respectively, diode D5 meets diode D6 through electric capacity C1 simultaneously, diode D5 meets diode D6 through resistance R7, resistance R8 and zener diode Z1 connect U1's input, U1's output termination circuit output, U1's output connects U2's negative input end through resistance R9, resistance R9 is through diode Z2 ground connection simultaneously, the utility model disclose |
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