Isolation sampling circuit
The invention relates to an isolation sampling circuit which comprises an anti-reverse diode, a light-emitting diode, a light-sensitive element, a first divider resistor, a second divider resistor, a voltage-stabilizing triode and a constant-current diode, the light-emitting diode and the light-sens...
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| Hauptverfasser: | , , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to an isolation sampling circuit which comprises an anti-reverse diode, a light-emitting diode, a light-sensitive element, a first divider resistor, a second divider resistor, a voltage-stabilizing triode and a constant-current diode, the light-emitting diode and the light-sensitive element are packaged in a lightproof shell, and the sampling circuit further comprises a first voltage-dividing resistor, a second voltage-dividing resistor, a voltage-stabilizing triode and a constant-current diode. The positive electrode of the anti-reverse diode is connected to the positive electrode of the input end, the first divider resistor and the second divider resistor are connected in series to form a voltage division circuit, and the other end of the first divider resistor is connected to the negative electrode of the anti-reverse diode and the positive electrode of the constant current diode. The other end of the second divider resistor is connected to the negative electrode of the input end and |
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