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US 8,134,371 B2Granted
Signal generating circuit for detecting ground status
OwnerJun Haninventor
Life of this patent
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Abstract
A signal generating circuit for detecting ground status includes a power supply input unit (A), a step down rectified power supply or DC power supply unit (C) in series. The DC power supply required by a signal detection and process unit (D) is obtained by the power supply input unit (A) passing through the step down DC power supply unit (C), and then a ground status signal is obtained and outputted via a resistor unit (B) and the signal detection and process unit (D) connected in turn.
Claims13
A signal generating circuit for detecting ground status, comprising:
- a power supply unit A for being inputted a power source, wherein said power supply unit A comprises a neutral wire, a hot wire, and a ground wire;
- a resistor unit B provided to obtain a reference potential, wherein an input end of said resistor unit B is electrically connected to at least one of said neutral wire, and hot wire of said power supply unit A;
- a signal detection and process unit D, which comprises a signal detection circuit and a signal process circuit;
- and a step down DC power supply unit C connected to said power supply unit A, wherein said power source is inputted into said power supply unit A to pass through said step down DC power supply unit C to obtain a DC power source for said signal detection and process unit D, wherein said power supply unit C is further electrically connected to said resistor unit B and said signal detection and process unit D, so that said signal detection circuit of said signal detection and process unit D generates a ground status signal related to said reference potential of said resistor unit B, and said signal process circuit of said signal detection and process unit D outputs said ground status signal to show the ground status;
- wherein said resistor unit B comprises a plurality of resistors, wherein said resistors are connected to each other either in parallel or in series;
- wherein said resistor unit B comprises a resistor RA, a resistor RB, a resistor RC, and a resistor RD, wherein said resistor RA is connected to said resistor RB in series, and said resistor RC is connected to said resistor RD in series, wherein said resistors RA, RB in series is parallely connected to said resistors RC, RD in series.
3 more elements
A signal generating circuit for detecting ground status, comprising:
- a power supply unit A for being inputted a power source, wherein said power supply unit A comprises a neutral wire, a hot wire, and a ground wire;
- a resistor unit B provided to obtain a reference potential, wherein an input end of said resistor unit B is electrically connected to at least one of said neutral wire, and hot wire of said power supply unit A;
- a signal detection and process unit D, which comprises a signal detection circuit and a signal process circuit;
- and a step down DC power supply unit C connected to said power supply unit A, wherein said power source is inputted into said power supply unit A to pass through said step down DC power supply unit C to obtain a DC power source for said signal detection and process unit D, wherein said power supply unit C is further electrically connected to said resistor unit B and said signal detection and process unit D, so that said signal detection circuit of said signal detection and process unit D generates a ground status signal related to said reference potential of said resistor unit B, and said signal process circuit of said signal detection and process unit D outputs said ground status signal to show the ground status;
- wherein said signal detection and process unit D comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a diode D5, a diode D15, and a chip U1, wherein a positive pole of said diode D15 is connected to a ground wire of said chip U1, and a negative pole of said diode D15 is connected to a negative terminal of said chip U1, wherein a voltage divider of said connected in series resistors R1, R2 is parallel connected to a voltage divider of said connected in series resistors R3, R4 and said diode D5, wherein a voltage divider connecting point 2 between said resistors R1 and R2 is connected to a positive terminal of said chip U1, wherein the other end of said resistor R1 is connected to a Vcc of said chip U1, wherein the other end of said resistor R2 is connected to a ground wire of said chip U1, wherein a voltage divider connecting point 3 of said resistors R3, R4, and said diode D5 is connected to said negative terminal of said chip U1, wherein one end of said resistor R4 is connected to said Vcc of said chip U1, and the other end of said resistor R4 is connected to a positive pole of said diode D5, wherein a negative pole of said diode D5 is connected to said voltage divider connecting point 3, wherein one end of said resistor R3 is connected to said ground wire of said chip U1, and the other end of said resistor R3 is connected to said voltage divider connecting point 3, wherein an output end of said resistor unit B is connected to said negative terminal of said chip U1, wherein a ground wire SGND of said power supply input unit A is connected to said negative terminal of said chip U1, and an output signal is connected to an output end of said chip U1.
2 more elements
A signal generating circuit for detecting ground status, comprising:
- a power supply unit A for being inputted a power source, wherein said power supply unit A comprises a neutral wire, a hot wire, and a ground wire;
- a resistor unit B provided to obtain a reference potential, wherein an input end of said resistor unit B is electrically connected to at least one of said neutral wire, and hot wire of said power supply unit A;
- a signal detection and process unit D, which comprises a signal detection circuit and a signal process circuit;
- and a step down DC power supply unit C connected to said power supply unit A, wherein said power source is inputted into said power supply unit A to pass through said step down DC power supply unit C to obtain a DC power source for said signal detection and process unit D, wherein said power supply unit C is further electrically connected to said resistor unit B and said signal detection and process unit D, so that said signal detection circuit of said signal detection and process unit D generates a ground status signal related to said reference potential of said resistor unit B, and said signal process circuit of said signal detection and process unit D outputs said ground status signal to show the ground status;
- wherein said signal detection and process unit D comprises a resistor R1, a resistor R2, a resistor, a resistor, a diodes D5, a voltage regulator diode ZD1, and a chip L1, wherein a negative pole of said voltage regulator diode ZD1 is connected to a Vcc of said chip U1, and a positive pole of said voltage regulator diode ZD1 is connected to a positive terminal of said chip U1, wherein a voltage divider of said connected in series resistors R1, R2 is parallel connected to a voltage divider of said connected in series resistors R3, R4 and said diode D5, wherein a voltage divider connecting point 2 between said resistors R1 and R2 is connected to a negative terminal of said chip U1, wherein the other end of said resistor R1 is connected to a Vcc of said chip U1, wherein the other end of said resistor R2 is connected to a ground wire of said chip U1, wherein a voltage divider connecting point 3 of said resistors R3, R4, and said diode D5 is connected to said positive terminal of said chip U1, wherein one end of said resistor R4 is connected to said Vcc of said chip U1, and the other end of said resistor R4 is connected to a positive pole of said diode D5, wherein a negative pole of said diode D5 is connected to said voltage divider connecting point 3, wherein one end of said resistor R3 is connected to said ground wire of said chip U1, and the other end of said resistor R3 is connected to said voltage divider connecting point 3, wherein an output end of said resistor unit B is connected to said Vcc of said chip U1, wherein a ground wire SGND of said power supply input unit A is connected to said positive terminal of said chip U1, and an output signal is connected to an output end of said chip U1.
2 more elements
A signal generating circuit for detecting ground status, comprising:
- a power supply unit A for being inputted a power source, wherein said power supply unit A comprises a neutral wire, a hot wire, and a ground wire;
- a resistor unit B provided to obtain a reference potential, wherein an input end of said resistor unit B is electrically connected to at least one of said neutral wire, and hot wire of said power supply unit A;
- a signal detection and process unit D, which comprises a signal detection circuit and a signal process circuit;
- and a step down DC power supply unit C connected to said power supply unit A, wherein said power source is inputted into said power supply unit A to pass through said step down DC power supply unit C to obtain a DC power source for said signal detection and process unit D, wherein said power supply unit C is further electrically connected to said resistor unit B and said signal detection and process unit D, so that said signal detection circuit of said signal detection and process unit D generates a ground status signal related to said reference potential of said resistor unit B, and said signal process circuit of said signal detection and process unit D outputs said ground status signal to show the ground status;
- wherein said signal detection and process unit D comprises a resistor R1, a resistor R2, a resistor R3, a diodes D1, a diodes D2, and a chip U1, wherein one end of said resistor R1 is connected to a ground wire SGND of the power supply input unit A, and the other end of said resistor R1 is connected to one of I/O pins of said chip U1 through said voltage divider connecting point 1 and 2 respectively, wherein a voltage divider of said connected in series resistors R2, R3 is parallely connected to a connected in series of said diode D1 and said diode D2, wherein the other end of said resistor R2 and an positive pole of said diode D2 are connected to a ground wire GND pin 4 of said chip U1, and the other end of the resistor R3 and a negative pole of said diode D1 are connected to a power Vcc pin 8 of said chip U1, wherein an output end of said resistor unit B is connected to said ground wire GND pin 4 of said chip U1.
2 more elements
Dependencies are inferred from the claim text.