CN217846481U - Electron anode detection circuitry and water heater - Google Patents
Electron anode detection circuitry and water heater Download PDFInfo
- Publication number
- CN217846481U CN217846481U CN202221291817.5U CN202221291817U CN217846481U CN 217846481 U CN217846481 U CN 217846481U CN 202221291817 U CN202221291817 U CN 202221291817U CN 217846481 U CN217846481 U CN 217846481U
- Authority
- CN
- China
- Prior art keywords
- voltage
- resistor
- current
- circuit
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses an electronic anode detection circuit and water heater, among the electronic anode detection circuit, the input of voltage stabilizing circuit is connected with DC power supply, the output of voltage stabilizing circuit loops through DC transformer, the first pin of connector is connected with the electronic anode, the input of current conversion voltage circuit is connected with DC transformer, the output of current conversion voltage circuit is connected with the detection pin of controller, the control pin of controller is connected with the pilot lamp; the direct current transformer detects the electric current that flows into the electron positive pole and exports current to the voltage conversion circuit, current conversion circuit converts the electric current that flows into the electron positive pole into voltage and inputs to the controller, the controller lights or extinguishes according to voltage control pilot lamp, gather the electric current that flows into the electron positive pole through direct current transformer, gather voltage output to the controller through the connecting wire for the second pin of connector, the second pin need not to connect the wiring in succession, connecting wire use quantity has been reduced, the degree of difficulty of electron positive pole fault repair has been reduced.
Description
Technical Field
The utility model relates to a water heater inner bag protection technical field especially relates to an electron positive pole detection circuitry and water heater.
Background
In the water heater, an electronic anode arranged in a liner of the water heater is a measure which is necessary for preventing the liner from being corroded, and the working state of the electronic anode is detected in real time in the water heater so as to be maintained in time when the electronic anode fails.
As shown in fig. 1, a detection circuit for detecting the working state of an electronic anode in a conventional water heater is shown, in the detection circuit, a connector P2 is connected to a 5V dc power supply and then passes through a bridge DB1 and a U1 to obtain a 3V dc power, the positive pole of the 3V dc power is connected to the electronic anode through a pin 1 of the connector P1, a pin 2 of the connector P1 is connected to a water heater tank, the pin 2 is grounded through resistors R1, R2 and R3 and is connected to a voltage input terminal of a controller U2, when the electronic anode works, the electronic anode, water in the tank and the tank form a loop, the pin 2 outputs voltage to the controller U2, the controller U2 controls an LED to be turned on, otherwise, the LED is controlled to be turned off to indicate the working state of the electronic anode,
the detection circuit is arranged on one side of the electronic anode, one connecting wire is required to be connected to the pin 1 of the connector to supply power to the electronic anode, and the other connecting wire is required to collect voltage from the pin 2 of the connector P1 and output the voltage to the controller U2, so that the wiring is complex, and the maintenance difficulty is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electron positive pole detection circuitry and water heater, it solves current electron positive pole detection circuitry effectively and has the wiring complicacy, increases the problem of the maintenance degree of difficulty.
The technical problem is solved by the following technical scheme:
in a first aspect, an electronic anode detection circuit is provided, which includes a voltage stabilizing circuit, a dc transformer, a current-to-voltage circuit, a controller, an indicator light, and a connector;
the input end of the voltage stabilizing circuit is connected with a direct-current power supply, the output end of the voltage stabilizing circuit is connected with the electronic anode sequentially through the direct-current transformer and a first pin of the connector, the input end of the current-to-voltage circuit is connected with the direct-current transformer, the output end of the current-to-voltage circuit is connected with a detection pin of the controller, and a control pin of the controller is connected with the indicator light;
the direct current transformer detects current flowing into the electronic anode and outputs the current to the current-to-voltage circuit, the current-to-voltage circuit converts the current into voltage and inputs the voltage to the controller, and the controller controls the indicator lamp to be turned on or turned off according to the voltage.
In an optional embodiment, the voltage stabilizing circuit comprises a DC-DC chip, a first resistor and a second resistor, a first input end of the DC-DC chip is connected to a positive terminal of a DC power supply, a second input end of the DC-DC chip is connected to a ground terminal, an output end of the DC-DC chip is connected to the DC transformer, the positive terminal of the DC power supply is connected to the ground terminal through the first resistor, and the output end of the DC-DC chip is connected to the ground terminal through the second resistor.
In an optional embodiment, the voltage stabilizing circuit further includes a first capacitor and a second capacitor, and the positive terminal of the dc power supply is connected to the ground terminal through the first capacitor and the second capacitor, respectively.
In an optional embodiment, the voltage stabilizing circuit further comprises a third capacitor and a fourth capacitor, and the output end of the DC-DC chip is connected to the ground end through the third capacitor and the fourth capacitor, respectively.
In an optional embodiment, the dc transformer includes a primary winding and a secondary winding, the output terminal of the voltage stabilizing circuit is connected to the first pin through the primary winding, and the secondary winding is connected to the input terminal of the current-to-voltage circuit.
In an alternative embodiment, the current-to-voltage circuit comprises a third resistor, a diode, a fourth resistor, a fifth resistor and a sixth resistor;
one end of the third resistor is connected with the first end of the secondary winding, the other end of the third resistor is connected with the second end of the secondary winding, a first common node formed by the third resistor and the first end of the secondary winding is connected with a ground terminal, a second common node formed by the third resistor and the second end of the secondary winding is connected with an anode of the diode, a cathode of the diode is connected with a detection pin of the controller sequentially through the fourth resistor and the sixth resistor, and a third common node formed by the fourth resistor and the sixth resistor is connected with the ground terminal through the fifth resistor.
In an optional embodiment, the current-to-voltage circuit further includes a fifth capacitor and a sixth capacitor, a third common node formed by the fourth resistor and the sixth resistor is connected to the ground terminal through the fifth capacitor, and one end of the sixth resistor connected to the detection pin is connected to the ground terminal through the sixth capacitor.
In an optional embodiment, the control pin is connected to the ground through a seventh resistor and the indicator lamp in sequence.
In an optional embodiment, the voltage at the input end of the voltage stabilizing circuit is greater than the voltage at the output end of the voltage stabilizing circuit.
In a second aspect, a water heater is provided, the water heater comprising an electronic anode and the electronic anode detection circuit of any one of the first aspect, wherein the first pin of the connector of the electronic anode detection circuit is connected with the electronic anode.
In an alternative embodiment, the electron anode is a magnesium rod.
Compared with the background art, the electronic anode detection circuit of the utility model has the advantages that:
through set up direct current transformer and current conversion voltage circuit in electron anode detection circuitry, can gather the electric current that is connected from voltage stabilizing circuit input to electron anode through direct current transformer, and change the electric current of gathering into voltage through current conversion voltage circuit, with this voltage input to the controller, the controller can detect the operating condition of electron anode according to this voltage, and control the pilot lamp according to the operating condition that detects and light or extinguish, it exports the controller after the voltage to have realized gathering the electric current through direct current transformer, for gathering voltage to the controller through the connecting wire from the second pin of connector in the background art, this embodiment need not to increase the connecting wire from the second pin of connector and gathers voltage, connecting wire use quantity has been reduced, the wiring of carrying out the detection to electron anode has been simplified, the degree of difficulty of electron anode fault repair has been reduced.
Drawings
The present invention will be described in further detail with reference to the drawings and examples.
FIG. 1 is a schematic circuit diagram of an electronic anode detection circuit in the prior art;
FIG. 2 is a block diagram of an electronic anode detection circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an electronic anode detection circuit according to an embodiment of the present invention;
in the figure:
10. a voltage stabilizing circuit; 20. a direct current transformer; 30. a current to voltage circuit; 40. a controller; 50. an indicator light; 60. a connector; 70. and an electron anode.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 2 is a block diagram of an embodiment of the present invention, wherein the electronic anode is disposed in the inner container of the water heater for protecting the inner container from chemical corrosion, and the electronic anode detection circuit is disposed in the water heater for detecting the operating status of the electronic anode, such as detecting whether the electronic anode is powered on or corroded.
As shown in fig. 2, the electronic anode detection circuit of the present embodiment includes a voltage stabilizing circuit 10, a dc transformer 20, a current-to-voltage circuit 30, a controller 40, an indicator light 50, and a connector 60.
The voltage stabilizing circuit 10 may be a circuit that converts an input power into a direct current with a constant voltage, in one example, when the power is an alternating current power, the voltage stabilizing circuit 10 may be a circuit that converts an alternating current into a direct current with a constant voltage, such as a circuit including various AC-DC chips, in another example, when the power is a direct current power, the voltage stabilizing circuit 10 may be a circuit that converts a direct current into a direct current with a constant voltage, such as a circuit including various DC-DC chips, and the specific circuit configuration of the voltage stabilizing circuit 10 is not limited in this embodiment.
The dc transformer 20 may be a sensor for collecting a magnitude of a direct current, the current-to-voltage circuit 30 may be a circuit for converting a current into a voltage, in this embodiment, an input end of the voltage stabilizing circuit 10 is connected to the dc power VCC1, an output end of the voltage stabilizing circuit 10 sequentially passes through the dc transformer 20, the pin 1 of the connector 60 is connected to the electronic anode 70, an input end of the current-to-voltage circuit 30 is connected to the dc transformer 20, an output end of the current-to-voltage circuit 30 is connected to a detection pin of the controller 40, and a control pin of the controller 40 is connected to the indicator lamp 50.
The dc transformer 20 is configured to detect a current flowing into the electronic anode 70 and output the current to the current-to-voltage circuit 30, the current-to-voltage circuit 30 is configured to convert the current flowing into the electronic anode 70 into a voltage and input the voltage to the controller 40, and the controller 40 is configured to control the indicator lamp 50 to be turned on or off according to the voltage.
The following description will be made, with reference to the examples, of the operation principle of the electronic anode detection circuit of the present embodiment, and the specific operation principle is as follows:
as shown in fig. 2, the direct current of the direct current power supply VCC1 passes through the voltage stabilizing circuit 10, the direct current transformer 20, and the pin 1 of the connector and then is input to the electronic anode 70, the electronic anode 70 is located in the inner container of the water heater, when the electronic anode 70, the water in the inner container, and the inner container form a loop, the current flows into the electronic anode 70 from the voltage stabilizing circuit 10 after passing through the direct current transformer 20 and the pin 1 of the connector 60, then the current is collected from the water in the inner container and the inner container to the ground, the direct current transformer 20 collects the current and outputs the current to the current-to-voltage circuit 30, the current-to-voltage circuit 30 converts the collected current into voltage and inputs the voltage to the controller 40, the controller 40 determines the working state of the electronic anode 70 according to the voltage magnitude, and outputs an electrical signal to drive the indicator lamp 50 to light. When the electronic anode 70, the water in the inner container and the inner container cannot form a loop, for example, when the electronic anode 70 is seriously corroded and cannot conduct electricity and the inner container is not grounded, no current flows into the electronic anode 70, no current is output to the current-to-voltage circuit 30 by the direct current transformer 20, no voltage is output to the controller 40 by the current-to-voltage circuit 30, and the controller 40 outputs an electric signal to drive the indicator lamp to be turned off. Of course, in practical applications, the controller 40 may control the indicator lamp 50 to operate in different modes according to the voltage, and the present embodiment is not limited to the manner of controlling the indicator lamp 50.
In the above embodiment, since the current flowing into the electronic anode 70 is collected by the dc transformer 20, and the current is converted into a voltage by the current-to-voltage circuit 30 and then input to the controller 40 to detect the operating state of the electronic anode 70, compared with the detection circuit in fig. 1, at one side of the electronic anode 70, it is not necessary to add a connection line to the pin 2 of the connector 60 to collect the voltage, so that the use of the connection line is reduced, the connection line for detecting the electronic anode is simplified, and the difficulty in maintaining the fault of the electronic anode is reduced.
Fig. 3 is a schematic circuit diagram of an electronic anode detection circuit according to an embodiment of the present application. As shown in fig. 3, in this embodiment, the power supply is a DC power supply VCC1, such as a 5V DC power supply, the voltage stabilizing circuit 10 includes a DC-DC chip U1, a first resistor R1 and a second resistor R2, a first input end of the DC-DC chip U1 is connected to a positive terminal of the DC power supply VCC1, a second input end of the DC-DC chip U1 is connected to a ground terminal GND, an output end VCC2 of the DC-DC chip U1 is connected to the DC transformer 20, a positive terminal of the DC power supply VCC1 is connected to the ground terminal GND through the first resistor R1, and an output end VCC2 of the DC-DC chip U1 is connected to the ground terminal GND through the second resistor R2.
The DC-DC chip U1 may be a chip that steps down the voltage of the DC power source VCC1 and outputs a constant voltage, that is, the voltage at the input end of the voltage stabilizing circuit 10 is greater than the voltage at the output end, for example, after the 5V DC input by the DC power source VCC1 is stepped down by the DC-DC chip U1, the output end VCC2 of the DC-DC chip U1 outputs a 3V DC, and the voltage output by the output end VCC2 is the voltage input to the electronic anode 70, as can be seen from fig. 3, the 5V DC and the 3V DC are connected to a ground end GND without isolation by an isolation circuit.
Of course, in practical applications, the voltage stabilizing circuit 10 may also be other circuits capable of converting dc power into constant voltage dc power, for example, a circuit that is clamped by a zener diode to obtain a constant voltage.
As shown in fig. 3, in an alternative embodiment, the voltage stabilizing circuit 10 may further include a first capacitor C1 and a second capacitor C2, the positive terminal of the DC power VCC1 is connected to the ground GND through the first capacitor C1 and the second capacitor C2, respectively, capacitance values of the first capacitor C1 and the second capacitor C2 may be equal or unequal, and before the DC power of the DC power VCC1 is input to the DC-DC chip U1, ac noise in the DC power may be filtered through the first capacitor C1 and the second capacitor C2, so as to obtain a better quality DC power.
As shown in fig. 3, in another alternative embodiment, the voltage stabilizing circuit 10 further includes a third capacitor C3 and a fourth capacitor C4, the output terminal VCC2 of the DC-DC chip U1 is connected to the ground terminal GND through the third capacitor C3 and the fourth capacitor C4, capacitance values of the third capacitor C3 and the fourth capacitor C4 may be equal or unequal, and after the DC-DC chip U1 outputs the DC power after the voltage stabilizing processing, noise generated during the voltage stabilizing processing may be filtered through the third capacitor C3 and the fourth capacitor C4, for example, high-frequency noise caused by an electronic switch during the voltage stabilizing processing of the DC-DC chip U1 is filtered, so that the DC power with better quality is input to the electronic anode 70.
Although the filtering in the voltage stabilizing circuit 10 is described by the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4, in practical applications, a person skilled in the art may implement the filtering by using one capacitor or more than two capacitors, or implement the filtering by using a pi-type RC filter circuit, a pi-type LC filter circuit, and the like, and the circuit structure of the filtering is not limited in this embodiment.
As shown in fig. 3, the dc transformer 20 of the present embodiment includes a primary winding L1 and a secondary winding L2, an output terminal of the voltage stabilizing circuit 10 is connected to the pin 1 of the connector 60 through the primary winding L1, and the secondary winding L2 is connected to an input terminal of the current-to-voltage circuit 30, in practical applications, the dc transformer 20 is used for mutual inductance for dc current value conversion, the dc transformer 20 generally includes the primary winding L1 and the secondary winding L2 wound on an iron core, when a current flows through the primary winding L1, a magnetic field exists in the iron core, and the secondary winding L2 induces the magnetic field to convert into a current. Specifically, in the present embodiment, as shown in fig. 3, the output terminal VCC2 of the DC-DC chip U1 in the voltage stabilizing circuit 10 is connected to the electronic anode 70 through the primary winding L1 and the pin 1 of the connector 60, when a current flows into the electronic anode 70, it is described that the current also flows through the primary winding L1, and the secondary winding L2 can sense the current in the primary winding L1 and output the current to the current-to-voltage circuit 30. The dc transformer 20 of the present embodiment includes a primary winding L1 and a secondary winding L2, has a simple structure, can collect the current flowing into the electron anode 70, and has high current collection accuracy by magnetic induction, so that the accuracy of current detection can be improved.
As shown in fig. 3, in an embodiment, the current-to-voltage circuit 30 includes a third resistor R3, a diode D1, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6, wherein one end of the third resistor R3 is connected to the first end a of the secondary winding L2, the other end of the third resistor R3 is connected to the second end b of the secondary winding L2, a first common node p1 formed by the third resistor R3 and the first end a of the secondary winding L2 is connected to the ground GND, a second common node p2 formed by the third resistor R3 and the second end b of the secondary winding L2 is connected to the anode of the diode D1, the cathode of the diode D1 is connected to the detection pin 3 of the controller 40 sequentially through the fourth resistor R4 and the sixth resistor R6, and a third common node p3 formed by the fourth resistor R4 and the sixth resistor R6 is connected to the ground GND through the fifth resistor R5. The current-to-voltage circuit 30 of the present embodiment is formed by using resistors, and an electronic integrated device is not required, so that the circuit structure is simple and reliable.
Further, the current-to-voltage circuit 30 may further include a fifth capacitor C5 and a sixth capacitor C6, a third common node p3 formed by the fourth resistor R4 and the sixth resistor R6 is connected to the ground terminal GND through the fifth capacitor C5, one end of the sixth resistor R6 connected to the detection pin 3 of the controller 40 is connected to the ground terminal GND through the sixth capacitor C6, the control pin 4 of the controller 40 sequentially passes through the seventh resistor R7 and the indicator lamp 50 and is grounded, high-frequency noise in the output voltage may be filtered through the fifth capacitor C5 and the sixth capacitor C6, thereby avoiding the influence of the noise on the controller 40 to cause misjudgment of the working state of the electronic anode 70, and improving the detection accuracy.
In order to more clearly illustrate the operation principle of the electronic anode detection circuit of the present embodiment, the principle of turning on the control indicator lamp 50 when the current flows into the electronic anode 70 and the normal operation are illustrated in fig. 3, and turning off the abnormality control indicator lamp 50 when the current does not flow into the electronic anode 70 is taken as an example, which is specifically as follows:
when the electronic anode 70 is located in the inner container of the water heater, and the electronic anode 70, the water in the inner container and the inner container form a loop, 5V direct current of the direct current power supply VCC1 flows into the DC-DC chip U1 after being filtered by the first filter capacitor C1 and the second filter capacitor C2, 3V direct current is output by the output terminal VCC2 of the DC-DC chip U1, and the 3V direct current flows into the pin 1 of the connector 60 through the primary winding L1 of the direct current transformer 20 after being filtered by the third filter capacitor C3 and the fourth filter capacitor C4, then flows into the electronic anode 70 from the pin 1, and then flows to the ground terminal through the loop formed by the electronic anode 70, the water in the inner container and the inner container. Meanwhile, the secondary winding L2 induces the current in the primary winding L1, the current flows through the third resistor R3, a voltage is formed at two ends of the third resistor R3, the voltage is rectified by the diode D1, divided by the fourth resistor R4 and the fifth resistor R5, filtered by the fifth capacitor C5 to smooth a waveform and the sixth resistor C6, the sixth resistor R6 limits the current and then inputs the current to the detection pin 3 of the controller 40, when the detection pin 3 inputs a high level, the controller 40 outputs a high level signal at the control pin 4 to drive the indicator lamp 50 to be turned on, otherwise, when the electronic anode 70 has a fault and no current flows, no current flows in the primary winding L1, no current is output in the secondary winding L2, the detection pin 3 of the controller 40 is a low level, the control pin 4 outputs a low level signal, and the indicator lamp 50 is turned off.
Through fig. 3 and the above embodiments, on one hand, the current flowing through the electronic anode 70 is collected by the dc transformer 20, and compared with the case that a connection line is added to the pin 2 of the connector 60 to collect voltage in fig. 1, in this embodiment, it is not necessary to collect a detection signal at the pin 2 of the connector 60, the number of the connection lines is reduced, the connection line for detecting the electronic anode is simplified, and the difficulty of fault maintenance of the electronic anode is reduced, on the other hand, the dc power supply VCC1, the output terminal VCC2 of the voltage stabilizing circuit 10, and the current-to-voltage circuit 30 share the ground terminal GND, and the dc power supply VCC1 and the output terminal VCC2 do not need to be isolated, and the voltage output by the current-to-voltage circuit 30 can be directly fed back to the controller 40, without an additional processing circuit, and the circuit structure is simplified.
The embodiment also provides a water heater, which comprises an electronic anode and the electronic anode detection circuit of the above embodiment, wherein the electronic anode can be a corrosion-resistant conductive metal such as a magnesium rod, an aluminum rod, etc., and a pin of a connector in the electronic anode detection circuit is connected with the electronic anode.
In the detailed description of the above embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the above technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The details of the foregoing embodiments are merely representative of several embodiments of the present invention, which are described in more detail and detail, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An electronic anode detection circuit is characterized by comprising a voltage stabilizing circuit (10), a direct current transformer (20), a current-to-voltage circuit (30), a controller (40), an indicator light (50) and a connector (60);
the input end of the voltage stabilizing circuit (10) is connected with a direct current power supply (VCC 1), the output end of the voltage stabilizing circuit (10) is connected with the electronic anode (70) through the direct current transformer (20) and a first pin of the connector (60) in sequence, the input end of the current-to-voltage circuit (30) is connected with the direct current transformer (20), the output end of the current-to-voltage circuit (30) is connected with a detection pin of the controller (40), and a control pin of the controller (40) is connected with the indicator light (50);
the direct current transformer (20) detects current flowing into the electronic anode (70) and outputs the current to the current-to-voltage circuit (30), the current-to-voltage circuit (30) converts the current into voltage and inputs the voltage to the controller (40), and the controller (40) controls the indicator lamp (50) to be turned on or turned off according to the voltage.
2. The electronic anode detection circuit according to claim 1, wherein the voltage stabilizing circuit (10) comprises a DC-DC chip (U1), a first resistor (R1) and a second resistor (R2), a first input terminal of the DC-DC chip (U1) is connected to a positive terminal of a DC power supply (VCC 1), a second input terminal of the DC-DC chip (U1) is connected to a ground terminal (GND), an output terminal (VCC 2) of the DC-DC chip (U1) is connected to the DC transformer (20), the positive terminal of the DC power supply (VCC 1) is connected to the ground terminal (GND) through the first resistor (R1), and an output terminal (VCC 2) of the DC-DC chip (U1) is connected to the ground terminal (GND) through the second resistor (R2).
3. The electronic anode detection circuit according to claim 2, characterized in that the voltage stabilizing circuit (10) further comprises a first capacitor (C1) and a second capacitor (C2), and the positive terminal of the dc power supply (VCC 1) is connected to the ground terminal (GND) through the first capacitor (C1) and the second capacitor (C2), respectively.
4. The electronic anode detection circuit according to claim 2, wherein the voltage regulator circuit (10) further comprises a third capacitor (C3) and a fourth capacitor (C4), and the output terminal (VCC 2) of the DC-DC chip (U1) is connected to the ground terminal (GND) through the third capacitor (C3) and the fourth capacitor (C4), respectively.
5. The electronic anode detection circuit according to any of claims 1 to 4, wherein the DC transformer (20) comprises a primary winding (L1) and a secondary winding (L2), the output of the voltage regulator circuit (10) is connected to the first pin via the primary winding (L1), and the secondary winding (L2) is connected to the input of the current-to-voltage circuit (30).
6. The electronic anode detection circuit according to claim 5, wherein the current-to-voltage circuit (30) comprises a third resistor (R3), a diode (D1), a fourth resistor (R4), a fifth resistor (R5) and a sixth resistor (R6);
one end of the third resistor (R3) is connected to the first end (a) of the secondary winding (L2), the other end of the third resistor (R3) is connected to the second end (b) of the secondary winding (L2), the third resistor (R3) is connected to the Ground (GND) via the first common node (p 1) formed by the first end (a) of the secondary winding (L2), the third resistor (R3) is connected to the anode of the diode (D1) via the second common node (p 2) formed by the second end (b) of the secondary winding (L2), the cathode of the diode (D1) is connected to the detection pin of the controller (40) via the fourth resistor (R4) and the sixth resistor (R6) in sequence, and the third common node (p 3) formed by the fourth resistor (R4) and the sixth resistor (R6) is connected to the Ground (GND) via the fifth resistor (R5).
7. The electronic anode detection circuit according to claim 6, wherein the current-to-voltage circuit (30) further comprises a fifth capacitor (C5) and a sixth capacitor (C6), wherein a third common node (p 3) formed by the fourth resistor (R4) and the sixth resistor (R6) is connected to the Ground (GND) through the fifth capacitor (C5), and one end of the sixth resistor (R6) connected to the detection pin is connected to the Ground (GND) through the sixth capacitor (C6).
8. The electronic anode detection circuit according to any of claims 1 to 4, wherein the control pin is connected to ground via a seventh resistor (R7) and the indicator light (50) in sequence.
9. A water heater characterized in that it comprises an electronic anode (70) and an electronic anode detection circuit according to any one of claims 1 to 8, the first pin of the connector (60) of which is connected to the electronic anode (70).
10. The water heater according to claim 9, wherein the electronic anode (70) is a magnesium rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221291817.5U CN217846481U (en) | 2022-05-26 | 2022-05-26 | Electron anode detection circuitry and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221291817.5U CN217846481U (en) | 2022-05-26 | 2022-05-26 | Electron anode detection circuitry and water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217846481U true CN217846481U (en) | 2022-11-18 |
Family
ID=84020699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221291817.5U Active CN217846481U (en) | 2022-05-26 | 2022-05-26 | Electron anode detection circuitry and water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217846481U (en) |
-
2022
- 2022-05-26 CN CN202221291817.5U patent/CN217846481U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104980009B (en) | Power supply device | |
| CN102426302B (en) | Three-phase power input open-phase detection circuit | |
| EP2955528B1 (en) | Near-infrared reading device and ammeter | |
| CN110753421B (en) | LED drive circuit and lamp tube | |
| CN213843381U (en) | Alternating voltage sampling and zero-crossing detection circuit based on current transformer | |
| CN212008740U (en) | Power failure detection device | |
| CN203759105U (en) | Precise zero cross detection circuit for resonance current of high-frequency dedusting power supply | |
| CN111007313A (en) | Electricity stealing identification circuit and method and electricity meter | |
| CN104901574A (en) | Bridge circuit and short circuit protection method thereof | |
| CN207234380U (en) | Input overvoltage/under-voltage protecting circuit | |
| CN217846481U (en) | Electron anode detection circuitry and water heater | |
| CN106787048B (en) | Charger with function of automatically identifying input voltage | |
| CN104777436A (en) | Novel alternating current power supply monitoring device | |
| CN210243751U (en) | AC three-phase power phase loss detection device | |
| CN207321130U (en) | Novel switch power circuit and its manufactured measuring instrument | |
| CN109946554A (en) | Single phase ac is grounded real-time detection circuit and its detection method | |
| CN212412839U (en) | Dual-power control circuit applied to navigation positioning terminal | |
| CN213367392U (en) | Magnetic modulation single-magnetic-core direct current leakage monitoring protection system | |
| TW201535953A (en) | Bridge circuit with short circuit protection and method thereof | |
| CN206364720U (en) | Low-ripple switch power supply | |
| CN207424116U (en) | Detection circuit | |
| CN215932000U (en) | Current detection circuit and electrical equipment | |
| CN211478453U (en) | Power supply circuit, electricity stealing identification circuit and ammeter | |
| CN211318567U (en) | Anti-interference power consumption monitor terminal | |
| CN213398876U (en) | Grounding detection circuit and electrical appliance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |