CN215495386U - Reverse connection prevention indication alarm circuit of alternating current power supply system - Google Patents
Reverse connection prevention indication alarm circuit of alternating current power supply system Download PDFInfo
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- CN215495386U CN215495386U CN202122230721.XU CN202122230721U CN215495386U CN 215495386 U CN215495386 U CN 215495386U CN 202122230721 U CN202122230721 U CN 202122230721U CN 215495386 U CN215495386 U CN 215495386U
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Abstract
The utility model discloses a reverse connection prevention indication alarm circuit of an alternating current power supply system, which relates to the technical field of wiring alarm.A current-limiting resistor R1 is connected with an L line of an alternating current power supply at one end, a current-limiting resistor R1 is connected with the anode of a rectifier diode D1 at the other end, the cathode of the rectifier diode D1 is connected with the anode of a light-emitting diode H1, and the cathode of the light-emitting diode H1 is connected with an N line of the alternating current power supply; one end of each of the current limiting resistor R2, the current limiting resistor R3 and the current limiting resistor R4 is connected with an alternating current power supply N line; the other end of the current-limiting resistor R2 is connected with the cathode of the light-emitting diode H2, and the anode of the light-emitting diode H2 is connected with the cathode of the rectifier diode D2; the other end of the current-limiting resistor R3 is respectively connected with the cathode of a capacitor C1, and the anode of the capacitor C1 is connected with the cathode of a rectifier diode D2; the other end of the current-limiting resistor R4 is connected to the negative electrode of the capacitor C2 and one end of the relay module, respectively, and the positive electrode of the capacitor C2 and the other end of the relay module are connected to the negative electrode of the rectifier diode D2, respectively.
Description
Technical Field
The utility model relates to the technical field of wiring alarm, in particular to an anti-reverse connection indication alarm circuit of an alternating current power supply system.
Background
In the actual wiring process, when alternating current power supply system live wire L and zero line N wiring were unusual, usually live wire zero line reversal, when this kind of condition appeared, the circuit was difficult to discover unusually in the daily use at initial stage, but nevertheless very arouses the electric shock very easily, also can lead to some domestic appliance unable normal work, so it is very necessary to design a circuit that can detect live wire zero line and connect the circuit of turning over and in time report to the police and remind.
The reverse connection indication alarm circuit for the live wire L and the zero line N of the alternating current power supply system effectively overcomes the defects that the conventional alternating current power supply input live wire L and the zero line N are reversely connected without site and remote alarm, when the wiring polarities of the live wire L and the zero line N are correct, the site is electrified to indicate the state, and the reverse connection alarm system does not work (an alarm indicator lamp, a buzzer and a remote alarm dry contact point do not have response); when two lines of a live line L and a zero line N of the power supply are reversely connected, the power-on indicator lamp is turned on, the reverse connection alarm system is started, and three alarms of site sound, light, remote signaling main connection points and the like are provided.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, provides an anti-reverse connection indicating and alarming circuit of an alternating current power supply system, and solves the problems that under the condition that a live wire and a zero wire are reversely connected, the detection is difficult and potential safety hazards exist.
The purpose of the utility model is realized by the following technical scheme:
the reverse connection prevention indication warning circuit of the alternating current power supply system comprises a current-limiting resistor R1, a current-limiting resistor R2, a current-limiting resistor R3, a current-limiting resistor R4, a rectifier diode D1, a rectifier diode D2, a light-emitting diode H1, a light-emitting diode H2, a capacitor C1, a capacitor C2 and a relay module;
one end of the current-limiting resistor R1 is connected with an alternating current power supply L line, the other end of the current-limiting resistor R1 is connected with the anode of the rectifier diode D1, the cathode of the rectifier diode D1 is connected with the anode of the light-emitting diode H1, and the cathode of the light-emitting diode H1 is connected with an alternating current power supply N line;
one end of each of the current limiting resistor R2, the current limiting resistor R3 and the current limiting resistor R4 is connected with an alternating current power supply N line;
the other end of the current-limiting resistor R2 is connected with the cathode of the light-emitting diode H2, the anode of the light-emitting diode H2 is connected with the cathode of the rectifier diode D2, and the anode of the rectifier diode D2 is connected with the PE (ground) electrode;
the other end of the current-limiting resistor R3 is respectively connected with the cathode of a capacitor C1, and the anode of the capacitor C1 is connected with the cathode of a rectifier diode D2;
the other end of the current-limiting resistor R4 is respectively connected with the cathode of the capacitor C2 and one end of the relay module, and the anode of the capacitor C2 and the other end of the relay module are respectively connected with the cathode of the rectifier diode D2.
Further, the relay module is a photoelectric coupler IC1 or a relay J1.
Further, dry contacts of the photocoupler IC1 or the relay J1 are used as a dry contact output A and a dry contact output B.
Further, the relay module selects a photoelectric coupler IC1, a driving negative electrode of the photoelectric coupler IC1 is connected with the other end of the current-limiting resistor R4, and a driving positive electrode of the photoelectric coupler IC1 is connected with a negative electrode of the rectifier diode D2.
Further, the light emitting diode H1 is a green LED lamp, and the light emitting diode H2 is a red LED lamp.
Furthermore, the other end of the current limiting resistor R3 is also connected with one end of a buzzer FM1, and the other end of the buzzer FM1 is connected with the negative electrode of the rectifier diode D2.
Furthermore, the current limiting resistor R1 and the current limiting resistor R2 are resistors with the resistance value of 50k omega-500 k omega and the power of 0.5W-2W.
Furthermore, the current limiting resistor R3 and the current limiting resistor R4 are resistors with the resistance value of 50k omega-200 k omega and the power of 1W-2W.
The utility model has the beneficial effects that:
1. the circuit element has high sensitivity and good reliability, provides on-site light and buzzing alarm and remote signaling dry contact alarm when the reverse connection condition of the zero line and the live wire occurs, and is particularly suitable for various occasions with higher wiring safety requirements on the live wire L and the zero line N.
2. The reverse connection indication alarm circuit only alarms when wiring, reminds engineering installation personnel, can immediately correct wiring after identifying a wiring error, has the current lower than 120mA when the alarm system works, cannot work after fault is eliminated, normally indicates power-on, has the working current not more than 5mA, and cannot cause energy waste.
Drawings
FIG. 1 is a schematic circuit diagram of a photocoupler IC1 selected as a relay module according to the present invention;
fig. 2 is a schematic circuit diagram of the relay module of the present invention, which uses relay J1.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to fig. 1-2 of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other implementations made by those of ordinary skill in the art based on the embodiments of the present invention are obtained without inventive efforts.
In the description of the present invention, it is to be understood that the terms "counterclockwise", "clockwise", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience of description only, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting.
The reverse connection prevention indication warning circuit of the alternating current power supply system comprises a current-limiting resistor R1, a current-limiting resistor R2, a current-limiting resistor R3, a current-limiting resistor R4, a rectifier diode D1, a rectifier diode D2, a light-emitting diode H1, a light-emitting diode H2, a capacitor C1, a capacitor C2 and a relay module;
one end of the current-limiting resistor R1 is connected with an alternating current power supply L line, the other end of the current-limiting resistor R1 is connected with the anode of the rectifier diode D1, the cathode of the rectifier diode D1 is connected with the anode of the light-emitting diode H1, and the cathode of the light-emitting diode H1 is connected with an alternating current power supply N line;
one end of each of the current limiting resistor R2, the current limiting resistor R3 and the current limiting resistor R4 is connected with an alternating current power supply N line;
the other end of the current-limiting resistor R2 is connected with the cathode of the light-emitting diode H2, the anode of the light-emitting diode H2 is connected with the cathode of the rectifier diode D2, and the anode of the rectifier diode D2 is connected with the PE (ground) electrode;
the other end of the current-limiting resistor R3 is respectively connected with the cathode of a capacitor C1, and the anode of the capacitor C1 is connected with the cathode of a rectifier diode D2;
the other end of the current-limiting resistor R4 is respectively connected with the cathode of the capacitor C2 and one end of the relay module, and the anode of the capacitor C2 and the other end of the relay module are respectively connected with the cathode of the rectifier diode D2.
Further, the relay module is a photoelectric coupler IC1 or a relay J1.
Further, dry contacts of the photocoupler IC1 or the relay J1 are used as a dry contact output A and a dry contact output B.
Further, the relay module selects a photoelectric coupler IC1, a driving negative electrode of the photoelectric coupler IC1 is connected with the other end of the current-limiting resistor R4, and a driving positive electrode of the photoelectric coupler IC1 is connected with a negative electrode of the rectifier diode D2.
Further, the light emitting diode H1 is a green LED lamp, and the light emitting diode H2 is a red LED lamp.
Furthermore, the other end of the current limiting resistor R3 is also connected with one end of a buzzer FM1, and the other end of the buzzer FM1 is connected with the negative electrode of the rectifier diode D2.
Furthermore, the current limiting resistor R1 and the current limiting resistor R2 are resistors with the resistance value of 50k omega-500 k omega and the power of 0.5W-2W.
Furthermore, the current limiting resistor R3 and the current limiting resistor R4 are resistors with the resistance value of 50k omega-200 k omega and the power of 1W-2W.
Example (b):
one end of a current-limiting resistor R1 in the morning is connected with a power supply L line, the other end of R1 is connected with the anode of a rectifier diode D1, the cathode of the rectifier diode D1 is connected with the anode of a light-emitting diode H1, and the cathode of H1 is connected with an N line; one end of each of current limiting resistors R2, R3 and R4 is connected with a power supply N line, the other end of the current limiting resistor R2 is connected with the cathode of a light emitting diode H2, the anode of H2 is connected with the cathode of D2, and the anode of D2 is connected with the ground PE pole; the other end of the R3 is connected with the negative electrode of a capacitor C1 and either end of a buzzer FM1, and the other ends of the C1 and the FM1 are connected with the negative electrode of a D2; the other end of the R4 is connected with the negative electrode of a capacitor C2, the negative electrode of a relay J1 or the driving negative electrode of a photocoupler IC1, the other end of the J1 (or the driving positive electrode of the IC 1) is connected with the negative electrode of the D2, and the dry contact of the J1 or the IC1 is used as a dry contact output A, B; when the zero line and live wire are connected positively, the light emitting diode H1 is bright, the light emitting diode H1 is generally green, the buzzer does not sound, the light emitting diode H2 does not light, when the zero line and live wire are connected reversely, the light emitting diode H1 is not bright, the light emitting diode H2 is bright, the light emitting diode H2 is generally red, the buzzer FM1 sounds, the dry contact outputs an alarm signal, and field sound and light alarm and remote dry contact alarm are carried out.
When the relay module selects the photoelectric coupler IC1, the resistors R1 and R2: 0.5-2W/50 k omega-500 k omega, resistances R3 and R4: 1-2W/50 k omega-200 k omega, diodes D1, D2: a diode: forward current: 1A reverse voltage: 50V-1200V surge current: 30A forward voltage: 1V, light emitting diodes H1, H2: current: 20mA power: voltage of 0.06W: 1-5V, capacitance C1: 400-800V/10-1000 uF, buzzer FM 1: the working voltage range is 1.0-50V, the maximum current is 200mA, the resistance is 1-50 omega frequency: 3000Hz, photocoupler IC 1: working voltage: 1-50V, insulation and voltage resistance: 2.5-5.0 kv;
when the relay J1 is selected as the relay module, the resistances R1 and R2: 0.5-2W/50 k omega-500 k omega, resistances R3 and R4: 1-2W/50 k omega-200 k omega, diodes D1, D2: a diode: forward current: 1A reverse voltage: 50V-1200V surge current: 30A forward voltage: 1V, light emitting diodes H1, H2: current: 20mA power: voltage of 0.06W: 1-5V, capacitance C1: 400-800V/10-1000 uF, buzzer FM 1: the working voltage range is 1.0-50V, the maximum current is 200mA, the resistance is 1-50 omega frequency: 3000Hz, relay J1: working voltage: 5-48V.
The foregoing is merely a preferred embodiment of the utility model, it being understood that the embodiments described are part of the utility model, and not all of it. 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 invention. The utility model is not intended to be limited to the forms disclosed herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (8)
1. The reverse connection prevention indication warning circuit of the alternating current power supply system is characterized by comprising a current-limiting resistor R1, a current-limiting resistor R2, a current-limiting resistor R3, a current-limiting resistor R4, a rectifier diode D1, a rectifier diode D2, a light-emitting diode H1, a light-emitting diode H2, a capacitor C1, a capacitor C2 and a relay module;
one end of the current-limiting resistor R1 is connected with an alternating current power supply L line, the other end of the current-limiting resistor R1 is connected with the anode of the rectifier diode D1, the cathode of the rectifier diode D1 is connected with the anode of the light-emitting diode H1, and the cathode of the light-emitting diode H1 is connected with an alternating current power supply N line;
one end of each of the current limiting resistor R2, the current limiting resistor R3 and the current limiting resistor R4 is connected with an alternating current power supply N line;
the other end of the current-limiting resistor R2 is connected with the cathode of the light-emitting diode H2, the anode of the light-emitting diode H2 is connected with the cathode of the rectifier diode D2, and the anode of the rectifier diode D2 is connected with the PE (ground) electrode;
the other end of the current-limiting resistor R3 is respectively connected with the cathode of a capacitor C1, and the anode of the capacitor C1 is connected with the cathode of a rectifier diode D2;
the other end of the current-limiting resistor R4 is respectively connected with the cathode of the capacitor C2 and one end of the relay module, and the anode of the capacitor C2 and the other end of the relay module are respectively connected with the cathode of the rectifier diode D2.
2. The AC power supply system reverse connection prevention indication alarm circuit as claimed in claim 1, wherein the relay module is selected from a photocoupler IC1 or a relay J1.
3. The AC power supply system reverse-connection-prevention indication alarm circuit as claimed in claim 2, wherein the dry contact of the photocoupler IC1 or the relay J1 is used as a dry contact output A and a dry contact output B.
4. The alarm circuit for indicating reverse connection prevention of an alternating current power supply system according to claim 2, wherein the relay module is a photoelectric coupler IC1, a driving negative electrode of the photoelectric coupler IC1 is connected with the other end of the current limiting resistor R4, and a driving positive electrode of the photoelectric coupler IC1 is connected with a negative electrode of a rectifier diode D2.
5. The AC power supply system reverse connection prevention indication alarm circuit as claimed in claim 1, wherein said LED H1 is a green LED lamp tube, and said LED H2 is a red LED lamp tube.
6. The reverse connection prevention indication alarm circuit of the alternating current power supply system as claimed in claim 1, wherein the other end of the current limiting resistor R3 is further connected with one end of a buzzer FM1, and the other end of the buzzer FM1 is connected with the negative electrode of a rectifier diode D2.
7. The reverse-connection-prevention indication alarm circuit of the alternating-current power supply system as claimed in claim 1, wherein the current-limiting resistor R1 and the current-limiting resistor R2 are resistors with the resistance value of 50k Ω -500 k Ω and the power of 0.5W-2W.
8. The reverse-connection-prevention indication alarm circuit of the alternating-current power supply system as claimed in claim 7, wherein the current-limiting resistor R3 and the current-limiting resistor R4 are resistors with the resistance value of 50k Ω -200 k Ω and the power of 1W-2W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122230721.XU CN215495386U (en) | 2021-09-15 | 2021-09-15 | Reverse connection prevention indication alarm circuit of alternating current power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122230721.XU CN215495386U (en) | 2021-09-15 | 2021-09-15 | Reverse connection prevention indication alarm circuit of alternating current power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215495386U true CN215495386U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122230721.XU Active CN215495386U (en) | 2021-09-15 | 2021-09-15 | Reverse connection prevention indication alarm circuit of alternating current power supply system |
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| Country | Link |
|---|---|
| CN (1) | CN215495386U (en) |
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2021
- 2021-09-15 CN CN202122230721.XU patent/CN215495386U/en active Active
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