CN211830208U - DC power supply reverse connection prevention protector with sound and light prompt - Google Patents
DC power supply reverse connection prevention protector with sound and light prompt Download PDFInfo
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- CN211830208U CN211830208U CN202020512003.4U CN202020512003U CN211830208U CN 211830208 U CN211830208 U CN 211830208U CN 202020512003 U CN202020512003 U CN 202020512003U CN 211830208 U CN211830208 U CN 211830208U
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Abstract
The utility model provides a direct current power supply reverse connection prevention protector with sound and light prompt, which comprises a protector box body, wherein an electric control board is arranged in the protector box body, and a protection circuit is arranged on the electric control board; the protection circuit comprises a sound alarm circuit for prompting reverse connection, an indication circuit for prompting normal output and a power supply starting circuit for forward connection of power supply. Direct current power supply can be effectively avoided, the problem that a power supply system and electric equipment are damaged due to the fact that the positive electrode and the negative electrode of a power supply are reversely connected is solved, the problem that the circuit is burnt out due to the fact that the circuit current loop is enlarged due to the fact that the positive electrode and the negative electrode of the power supply are reversely connected is effectively solved, and damage to the electric equipment and damage to the power supply system are effectively avoided.
Description
Technical Field
The utility model relates to a take direct current power supply of audio-visual suggestion to prevent reverse-connection protector belongs to the power supply protection device field, concretely relates to prevent that operating personnel from reversing the positive and negative polarity and connecing wrong protection control ware who damages equipment.
Background
In order to solve the defects that the common protector causes the narrow voltage-withstanding of the power supply and the unclear prompt, the protector is used for stereoscopically displaying the functions of the protector from sound prompt photoelectric display, hardware disconnection load protection and the like. And the high-voltage silicon controlled rectifier has the characteristics of wide protection range, high voltage resistance, wide application range and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a take direct current power supply of reputation suggestion to prevent reverse-connection protector can effectually avoid electrical operation personnel error to direct current power supply, and the positive negative pole of power connects reverse back, causes the problem that power supply system and consumer damaged to can effectually avoid causing the increase of line current return circuit to burn out circuit scheduling problem, the effectual damage and the power supply system's of avoiding the consumer to become equipment because of the positive negative pole of power connects reverse back.
In order to realize the technical characteristics, the purpose of the utility model is realized as follows: a direct current power supply anti-reverse connection protector with a sound and light prompt comprises a protector box body, wherein an electric control board is arranged in the protector box body, and a protection circuit is distributed on the electric control board;
the protection circuit comprises a sound alarm circuit for prompting reverse connection, an indication circuit for prompting normal output and a power supply starting circuit for forward connection of power supply.
The sound alarm circuit comprises an anode connecting terminal and a cathode connecting terminal which are respectively connected with a direct-current power supply, a voltage stabilizing tube, a third resistor and a diode are sequentially connected between the anode connecting terminal and the cathode connecting terminal in series, and two ends of the voltage stabilizing tube are connected with a passive buzzer in parallel.
And a sound amplifying pore plate is arranged at the position of the box body of the protector where the passive buzzer is positioned.
The indicating circuit comprises a first resistor, a second resistor and a prompting lamp which are sequentially connected in series, and the indicating circuit is connected with the sound alarm circuit in parallel.
The prompting lamp is an LED lamp, and the prompting lamp extends out of a mounting hole in a top cover of the protector box body.
The power supply starting circuit comprises a one-way silicon controlled rectifier, the one-way silicon controlled rectifier is connected with a first resistor of the indicating circuit in series, a control electrode of the one-way silicon controlled rectifier is connected with a fourth resistor, the other end of the fourth resistor is communicated with a negative terminal, a negative electrode of the one-way silicon controlled rectifier is provided with a positive output terminal for connecting a load positive electrode, and the negative terminal is communicated with a negative output terminal.
The unidirectional silicon controlled rectifier adopts a high-voltage silicon controlled rectifier.
The utility model discloses there is following beneficial effect:
by adopting the reverse connection prevention protector, the reverse connection prevention protector is arranged between a power supply and a load and is used for normally supplying power to the load when the power supply is normally connected and disconnecting the power supply from the load when the positive electrode and the negative electrode of the power supply are reversely connected; the electric system is prevented from being damaged after reverse connection.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the protection circuit of the present invention.
In the figure: the device comprises a positive terminal 1, a negative terminal 2, a passive buzzer 3, a voltage regulator tube 4, a third resistor 5, a diode 6, a first resistor 7, a second resistor 8, a prompting lamp 9, a one-way thyristor 10, a fourth resistor 11, a load 12, a protector box body 13, an electric control board 14, a sound amplification orifice plate 15, a positive output terminal 16, a negative output terminal 17 and a mounting hole 18.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
Referring to fig. 1-2, a direct current power supply reverse connection prevention protector with a sound and light prompt comprises a protector box body 13, wherein an electric control board 14 is installed inside the protector box body 13, and a protection circuit is distributed on the electric control board 14; the protection circuit comprises a sound alarm circuit for prompting reverse connection, an indication circuit for prompting normal output and a power supply starting circuit for forward connection of power supply. By adopting the reverse connection prevention protector, the reverse connection prevention protector is arranged between a power supply and a load and is used for normally supplying power to the load when the power supply is normally connected and disconnecting the power supply from the load when the positive electrode and the negative electrode of the power supply are reversely connected; the electric system is prevented from being damaged after reverse connection.
Further, the sound alarm circuit comprises an anode wiring terminal 1 and a cathode wiring terminal 2 which are respectively connected with the direct-current power supply, a voltage stabilizing tube 4, a third resistor 5 and a diode 6 are sequentially connected between the anode wiring terminal 1 and the cathode wiring terminal 2 in series, and two ends of the voltage stabilizing tube 4 are connected with a passive buzzer 3 in parallel. By the above
Further, a sound amplifying pore plate 15 is arranged at the position of the protector box body 13 where the passive buzzer 3 is located. Guaranteed through public address orifice plate 15 that sound can see through public address orifice plate 15 and then guarantee that operating personnel can hear when the reversal, improved the security of operation.
Furthermore, the indicating circuit comprises a first resistor 7, a second resistor 8 and a prompting lamp 9 which are sequentially connected in series, and the indicating circuit is connected with the sound alarm circuit in parallel. Through foretell indicating circuit, when can be used for showing normal wiring, just connect the signal for remind operating personnel to work a telephone switchboard correctly.
Further, the prompting lamp 9 is an LED lamp, and the prompting lamp 9 extends out of the mounting hole 18 of the top cover of the protector box body 13. The installation hole 18 can conveniently transmit light, and the purpose of normal indication is achieved.
Further, the power starting circuit comprises a one-way thyristor 10, the one-way thyristor 10 is connected with the first resistor 7 of the indicating circuit in series, the control electrode of the one-way thyristor 10 is connected with a fourth resistor 11, the other end of the fourth resistor 11 is communicated with the negative terminal 2, the cathode of the one-way thyristor 10 is provided with a positive output terminal 16 for connecting the positive electrode of the load 12, and the negative terminal 2 is communicated with the negative output terminal 17. Through foretell power starting circuit, can guarantee to connect or not can't switch on the circuit after switching on, and then play fine guard action to the load.
Further, the unidirectional silicon controlled rectifier 10 is a high-voltage silicon controlled rectifier. The high-voltage silicon controlled rectifier is used for adapting to the range of high power supply.
The utility model discloses a working process and principle do:
a first portion, an audible alarm circuit, which sounds upon reversal of connection, comprising: the passive buzzer consists of a passive buzzer B1, a voltage regulator tube DZ1, a third resistor R3 and a diode VD 1.
The working principle is as follows: when the power supply is connected reversely, the forward voltage can supply voltage to the passive buzzer B1 through the diode VD1, the third resistor R3 and the voltage regulator tube DZ1, so that the passive buzzer B1 is powered and sounds, and the user circuit is prompted to be connected reversely. Otherwise a correctly wired circuit will not work.
A second part, the indication circuit comprising: the LED indicator lamp consists of a first resistor R1, a second resistor R2 and an LED indicator lamp LED1 for indicating light emission.
The main working principle is as follows: when the user power supply is correct, the forward voltage is limited to the LED indicator light LED1 through the first resistor R1 and the second resistor R2 to provide the forward voltage to force the LED indicator light to emit light, and the user is prompted to connect the wires normally. If the power line reverse circuit is connected, the LED can not be lighted when the power line reverse circuit can not work.
And the third part, the power supply starting circuit comprises: the high-voltage power supply comprises a one-way thyristor Q2, a first resistor R1 and an anti-interference fourth resistor R4, wherein the high-voltage thyristor is used for adapting to the range of high power supply.
The working process is as follows: when the positive and negative connection wires of the input power supply are normal, one path of the positive power supply passes through the anode A of the thyristor and is input into the cathode K, the other path of the positive power supply is output, positive voltage is provided for the control electrode G of the thyristor by the second resistor R2 to force the thyristor to be conducted into a load output power supply, and the fourth resistor R4 is used for reducing the trigger conduction sensitivity of the thyristor and reducing interference. If the power supply is reversely connected, the conduction condition of the controllable silicon is lost, and the circuit cannot be started.
Finally, the normal work of reaching the protection can be formed through the mutual cooperation of the above three plate circuits, and the use function is realized.
Claims (7)
1. The utility model provides a take direct current power supply of audio-visual suggestion to prevent joining in reverse protector which characterized in that: the protector comprises a protector box body (13), wherein an electric control board (14) is arranged in the protector box body (13), and a protection circuit is distributed on the electric control board (14);
the protection circuit comprises a sound alarm circuit for prompting reverse connection, an indication circuit for prompting normal output and a power supply starting circuit for forward connection of power supply.
2. The direct-current power supply reverse connection prevention protector with the audible and visual prompt function according to claim 1, is characterized in that: the sound alarm circuit comprises an anode connecting terminal (1) and a cathode connecting terminal (2) which are respectively connected with a direct-current power supply, a voltage stabilizing tube (4), a third resistor (5) and a diode (6) are sequentially connected between the anode connecting terminal (1) and the cathode connecting terminal (2) in series, and two ends of the voltage stabilizing tube (4) are connected with a passive buzzer (3) in parallel.
3. The direct-current power supply reverse connection prevention protector with the audible and visual prompt function according to claim 2, is characterized in that: and a sound amplifying pore plate (15) is arranged at the position of the passive buzzer (3) on the protector box body (13).
4. The direct-current power supply reverse connection prevention protector with the audible and visual prompt function according to claim 1, is characterized in that: the indicating circuit comprises a first resistor (7), a second resistor (8) and a prompting lamp (9) which are sequentially connected in series, and the indicating circuit is connected with the sound alarm circuit in parallel.
5. The direct-current power supply reverse connection prevention protector with the audible and visual prompt function according to claim 4, is characterized in that: the prompting lamp (9) adopts an LED lamp, and the prompting lamp (9) extends out of a mounting hole (18) of a top cover of the protector box body (13).
6. The direct-current power supply reverse connection prevention protector with the audible and visual prompt function according to claim 1, is characterized in that: the power starting circuit comprises a one-way silicon controlled rectifier (10), the one-way silicon controlled rectifier (10) is connected with a first resistor (7) of the indicating circuit in series, a control electrode of the one-way silicon controlled rectifier (10) is connected with a fourth resistor (11), the other end of the fourth resistor (11) is communicated with a negative terminal (2), a cathode of the one-way silicon controlled rectifier (10) is provided with a positive output terminal (16) used for connecting a positive electrode of a load (12), and the negative terminal (2) is communicated with a negative output terminal (17).
7. The direct-current power supply reverse connection prevention protector with the audible and visual prompt function according to claim 6, is characterized in that: the unidirectional silicon controlled rectifier (10) adopts a high-voltage silicon controlled rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020512003.4U CN211830208U (en) | 2020-04-09 | 2020-04-09 | DC power supply reverse connection prevention protector with sound and light prompt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020512003.4U CN211830208U (en) | 2020-04-09 | 2020-04-09 | DC power supply reverse connection prevention protector with sound and light prompt |
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| Publication Number | Publication Date |
|---|---|
| CN211830208U true CN211830208U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020512003.4U Active CN211830208U (en) | 2020-04-09 | 2020-04-09 | DC power supply reverse connection prevention protector with sound and light prompt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113709418A (en) * | 2021-08-26 | 2021-11-26 | 洛阳瑞光影视光电技术有限公司 | Monitor with photometry function |
-
2020
- 2020-04-09 CN CN202020512003.4U patent/CN211830208U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113709418A (en) * | 2021-08-26 | 2021-11-26 | 洛阳瑞光影视光电技术有限公司 | Monitor with photometry function |
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