CN204964723U - High pressure alert circuit - Google Patents
High pressure alert circuit Download PDFInfo
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- CN204964723U CN204964723U CN201520766191.2U CN201520766191U CN204964723U CN 204964723 U CN204964723 U CN 204964723U CN 201520766191 U CN201520766191 U CN 201520766191U CN 204964723 U CN204964723 U CN 204964723U
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- emitting diode
- light emitting
- power supply
- divider resistance
- switching power
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Abstract
The utility model provides a high pressure alert circuit, including load, switching power supply, electrolytic capacitor, an emitting diode, ground resistance, the 2nd emitting diode, a divider resistance and the 2nd divider resistance, electrolytic capacitor's anodal connected load's feeder ear, switching power supply's input and a divider resistance one end, an emitting diode's positive pole is connected to switching power supply's output, the 2nd emitting diode's positive pole is connected between a divider resistance and the 2nd divider resistance, and the 2nd emitting diode's negative pole is connected with an emitting diode's negative pole, ground resistance establishes ties between an emitting diode's negative pole and ground. Through the configuration to two divider resistance and ground resistance, can make an emitting diode and the 2nd emitting diode different with the luminescent state under the damaged condition in the normal work of switching power supply to solve if switching power supply damages, emitting diode can consume the technical problem who finishes by wrong suggestion electrolytic capacitor.
Description
Technical field
The utility model belongs to power circuit design field, specifically, relates to a kind of high pressure warning circuit.
Background technology
In air-conditioning, common a kind of power supply circuit, as shown in Figure 1, comprises load 11, electrochemical capacitor C1, Switching Power Supply 12 and light emitting diode D1; The positive pole of electrochemical capacitor C1 is connected to the feeder ear of load 11, as energy storage device for load 11 provides high direct voltage; Meanwhile, the positive pole of electrochemical capacitor C1 is also connected to the input end of Switching Power Supply 11, as the input of Switching Power Supply 11, makes Switching Power Supply stable output voltage be other application circuits of air-conditioning or chip power supply; And the voltage output end of the positive pole connecting valve power supply 11 of light emitting diode D1, minus earth.Load is blower fan, compressor etc. such as.
When this power supply circuit normally works, the high direct voltage that electrochemical capacitor provides loads on a light emitting diode through Switching Power Supply, and light emitting diode is lighted, and for characterizing the existence of this circuit, Keep Clear-High Voltage; When electrochemical capacitor runs out of, light emitting diode extinguishes because of not powering, and operating personnel's electrochemical capacitor can be reminded to be exhausted, and needs to change.
But, there is following problem in this power supply circuit: if the Switching Power Supply in this power supply circuit breaks down, the high direct voltage path provided due to electrochemical capacitor is cut off, light emitting diode can be caused equally to extinguish, now, operating personnel can take for electrochemical capacitor be exhausted need change, if now carry out replacement operation, easily produce Danger Electric shock risk.
Summary of the invention
The utility model provides a kind of high pressure warning circuit, can when Switching Power Supply be damaged, warning is provided to the high direct voltage of electrochemical capacitor, damage if solve Switching Power Supply in power supply circuit of the prior art, the technical matters that light emitting diode meeting miscue electrochemical capacitor is exhausted.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
Propose a kind of high pressure warning circuit, comprise load, Switching Power Supply, electrochemical capacitor and the first light emitting diode; The positive pole of described electrochemical capacitor connects the feeder ear of described load and the input end of described Switching Power Supply, the minus earth of described electrochemical capacitor; The output terminal of described Switching Power Supply connects the positive pole of described first light emitting diode, the minus earth of described first light emitting diode; Described high pressure warning circuit also comprises the second light emitting diode, the first divider resistance and the second divider resistance; Described first divider resistance one end is connected to the positive pole of described electrochemical capacitor, and the other end of described first divider resistance connects one end of described second divider resistance, the other end ground connection of described second divider resistance; The positive pole of described second light emitting diode is connected between described first divider resistance and described second divider resistance, and the negative pole of described second light emitting diode is connected with the negative pole of described first light emitting diode; Described high pressure warning circuit also includes the stake resistance between negative pole and ground being series at described first light emitting diode.
Compared with prior art, advantage of the present utility model and good effect are:
In the high pressure warning circuit that the utility model embodiment provides, when Switching Power Supply is normal, the high direct voltage that electrochemical capacitor provides on the one hand is supplied to Switching Power Supply, Switching Power Supply is made to power to the first light emitting diode, on the other hand, the high direct voltage that electrochemical capacitor provides is by powering to the second light emitting diode after the dividing potential drop of the first divider resistance and the second divider resistance, by the configuration of two divider resistances and the configuration of stake resistance, the voltage of the second light emitting diode positive pole can be made lower than the voltage of the first light emitting diode negative pole, the first light emitting diode is then made to light and the second light emitting diode extinguishes, if Switching Power Supply is damaged and electrochemical capacitor is working properly, then the first light emitting diode can because do not have power supply input and extinguish, and now the positive pole of the second light emitting diode is also loaded with the power supply after by electrochemical capacitor high direct voltage dividing potential drop, therefore the second light emitting diode continues to light, if electrochemical capacitor is exhausted, then the first light emitting diode and the second light emitting diode all can extinguish because of not powering, therefore, the high pressure warning circuit provided by the utility model embodiment, when the first lumination of light emitting diode, the second light emitting diode extinguishes, show that electrochemical capacitor and Switching Power Supply are all working properly, if the first light emitting diode extinguishes and the second lumination of light emitting diode, show electrochemical capacitor working properly and Switching Power Supply is damaged, if the first light emitting diode and the second light emitting diode all extinguish, showing that electrochemical capacitor is exhausted needs to change, then, the situation that Switching Power Supply is damaged when electrochemical capacitor is normal can be judged by the state of the first light emitting diode and the second light emitting diode, damage if solve Switching Power Supply in power supply circuit of the prior art, the technical matters that light emitting diode meeting miscue electrochemical capacitor is exhausted.
After reading the detailed description of the utility model embodiment by reference to the accompanying drawings, other features of the present utility model and advantage will become clearly.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of prior art power supply circuit;
Fig. 2 is the circuit diagram of the high pressure warning circuit that the utility model embodiment proposes.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in more detail.
As shown in Figure 2, be the circuit diagram of the high pressure warning circuit that the utility model embodiment proposes, load 21, Switching Power Supply 22, electrochemical capacitor C2 and the first light emitting diode D21; Wherein, the positive pole of electrochemical capacitor C2 connects the feeder ear of load 21 and the input end of Switching Power Supply 22, the minus earth of electrochemical capacitor C2; The output terminal of Switching Power Supply 22 connects the positive pole of the first light emitting diode D21, the minus earth of the first light emitting diode D21.
This high pressure warning circuit also comprises the second light emitting diode D22, the first divider resistance R21 and the second divider resistance R22; Wherein, first divider resistance R21 one end is connected to the positive pole of electrochemical capacitor C2, and the other end of the first divider resistance R21 connects one end of the second divider resistance R22, the other end ground connection of the second divider resistance R22; The positive pole of the second light emitting diode D22 is connected between the first divider resistance R21 and the second divider resistance R22, and the negative pole of the second light emitting diode D22 is connected with the negative pole of the first light emitting diode.
This high pressure warning circuit also includes the stake resistance R23 between negative pole and ground being series at the first light emitting diode D21.
Here electrochemical capacitor C2 store electrical energy, for load 21 and Switching Power Supply 22 provide high direct voltage to input.
When this high pressure warning circuit is working properly, refer to that electrochemical capacitor C2 and Switching Power Supply 21 are all in normal operating conditions, now, the high direct voltage that electrochemical capacitor provides on the one hand inputs to Switching Power Supply, Switching Power Supply is inputted accordingly and produces circuit or the chip that burning voltage exports to the first light emitting diode and other needs power supplies; On the other hand, the high direct voltage that provides of electrochemical capacitor is by powering to the second light emitting diode after the dividing potential drop of the first divider resistance and the second divider resistance; Now, the resistance of configuration first divider resistance and the second divider resistance can be passed through, and the resistance of stake resistance, make the voltage U B of the second light emitting diode positive pole lower than the voltage U A of the first light emitting diode negative pole, then make the first lumination of light emitting diode and the second light emitting diode extinguishes.
If electrochemical capacitor is working properly, and Switching Power Supply breaks down damage, now, the first light emitting diode is because not power supply and extinguishing, and the second light emitting diode is also loaded with the power supply after the high direct voltage dividing potential drop exported by electrochemical capacitor, therefore the second light emitting diode is lighted.
If electrochemical capacitor is exhausted, its positive pole does not have high direct voltage to export, and makes the first light emitting diode and the second light emitting diode all because do not have power and extinguish.
Visible, the high pressure warning circuit provided by the present embodiment, when the second light emitting diode extinguishes when the first lumination of light emitting diode, shows that electrochemical capacitor and Switching Power Supply are all working properly, and also because electrochemical capacitor exists high pressure, touching is dangerous for circuit; If the first light emitting diode and the second light emitting diode all extinguish, showing that electrochemical capacitor is exhausted needs to change, and it is dangerous that circuit removes high pressure touching; If the first light emitting diode extinguishes and the second lumination of light emitting diode, the damage and Switching Power Supply breaks down that shows electrochemical capacitor working properly, now make circuit still there is high pressure touching danger because electrochemical capacitor normally works, operating personnel should be noted that when changing Switching Power Supply and take precautions against high pressure touching.
Thus, the duty of this high pressure warning circuit of condition adjudgement of the first light emitting diode and the second light emitting diode can be passed through, when when the first lumination of light emitting diode, the second light emitting diode extinguishes, Keep Clear-High Voltage in warning circuit existence, when the first light emitting diode and the second light emitting diode all extinguish, there is the warning that Keep Clear-High Voltage in relieving circuit, when the first light emitting diode extinguishing during the second lumination of light emitting diode, Switching Power Supply in warning circuit breaks down, but still exist Keep Clear-High Voltage.Visible, by this high pressure warning circuit, damage if Switching Power Supply in power supply circuit of the prior art as shown in Figure 1 can be solved, the technical matters that light emitting diode meeting miscue electrochemical capacitor is exhausted; Can avoid thus breaking down damages when Switching Power Supply, make operating personnel face due to the miscue of light emitting diode the situation generation that Keep Clear-High Voltage.
The high pressure warning circuit that above-mentioned the utility model embodiment proposes, two divider resistances are increased in existing power supply circuit, second light emitting diode and stake resistance, by the configuration of two divider resistances and stake resistance, the cathode voltage of the second light emitting diode and the cathode voltage of the first light emitting diode is made to keep pressure reduction, thus the monitoring realized switch power supply status, when Switching Power Supply breaks down, still the existence of the high direct voltage that electrochemical capacitor provides can be warned, thus operating personnel can be made according to being that electrochemical capacitor is exhausted or Switching Power Supply is damaged in the accurate decision circuitry of the state of two light emitting diodes, and then operating personnel can be avoided to take for the electrochemical capacitor release Danger Electric shock risk easily produced when changing completely.
It should be noted that; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing; the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (1)
1. a high pressure warning circuit, comprises load, Switching Power Supply, electrochemical capacitor and the first light emitting diode; The positive pole of described electrochemical capacitor connects the feeder ear of described load and the input end of described Switching Power Supply, the minus earth of described electrochemical capacitor; The output terminal of described Switching Power Supply connects the positive pole of described first light emitting diode, the minus earth of described first light emitting diode; It is characterized in that, described high pressure warning circuit also comprises the second light emitting diode, the first divider resistance and the second divider resistance;
Described first divider resistance one end is connected to the positive pole of described electrochemical capacitor, and the other end of described first divider resistance connects one end of described second divider resistance, the other end ground connection of described second divider resistance; The positive pole of described second light emitting diode is connected between described first divider resistance and described second divider resistance, and the negative pole of described second light emitting diode is connected with the negative pole of described first light emitting diode; Described high pressure warning circuit also includes the stake resistance between negative pole and ground being series at described first light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520766191.2U CN204964723U (en) | 2015-09-30 | 2015-09-30 | High pressure alert circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520766191.2U CN204964723U (en) | 2015-09-30 | 2015-09-30 | High pressure alert circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204964723U true CN204964723U (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520766191.2U Active CN204964723U (en) | 2015-09-30 | 2015-09-30 | High pressure alert circuit |
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| Country | Link |
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| CN (1) | CN204964723U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917716A (en) * | 2019-03-29 | 2019-06-21 | 江苏核电有限公司 | A kind of magnetic valve of nuclear power station control system load simulation circuit |
| CN110429898A (en) * | 2019-08-15 | 2019-11-08 | 海信（山东）空调有限公司 | A kind of control method of frequency conversion equipment, device and frequency conversion equipment |
-
2015
- 2015-09-30 CN CN201520766191.2U patent/CN204964723U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917716A (en) * | 2019-03-29 | 2019-06-21 | 江苏核电有限公司 | A kind of magnetic valve of nuclear power station control system load simulation circuit |
| CN109917716B (en) * | 2019-03-29 | 2024-03-19 | 江苏核电有限公司 | Nuclear power station solenoid valve control system load simulation circuit |
| CN110429898A (en) * | 2019-08-15 | 2019-11-08 | 海信（山东）空调有限公司 | A kind of control method of frequency conversion equipment, device and frequency conversion equipment |
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