CN209133423U - A kind of relay-indicating light circuit structure - Google Patents
A kind of relay-indicating light circuit structure Download PDFInfo
- Publication number
- CN209133423U CN209133423U CN201822196470.6U CN201822196470U CN209133423U CN 209133423 U CN209133423 U CN 209133423U CN 201822196470 U CN201822196470 U CN 201822196470U CN 209133423 U CN209133423 U CN 209133423U
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- China
- Prior art keywords
- relay
- light emitting
- emitting diode
- wiring
- light
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of relay-indicating light circuit structures, including relay, the relay input terminal is connected separately with the first wiring and the second wiring, first wiring and the second terminal portions are equipped with the identical connecting terminal of specification, the utility model is by control voltage by after the first light emitting diode and the second light emitting diode, circuit is generated using first resistor, two light emitting diodes use " anode-cathode " parallel way, therefore regardless of polarity of voltage, always there is a light emitting diode can be lit, realize the instruction of control voltage, after relay coil is plus control voltage, relay normally open contact closure, 24V supplies voltages pass through the outside output voltage in the contact, third light emitting diode is lighted, indicating relay contact closure condition, freewheeling diode is for inhaling The backward voltage for receiving load power or power-down moment generation, protects 24V power supply and relay contact.
Description
Technical field
The utility model relates to relay technical field, specially a kind of relay-indicating light circuit structure.
Background technique
Relay is a kind of electric control device, is when the variation of input quantity (energizing quantity) reaches prescribed requirement, electrical
Make controlled volume that a kind of electric appliance of scheduled Spline smoothing occur in output circuit.It has control system (also known as input circuit) and
By the interactive relationship between control system (also known as output loop).It is usually applied in automation control circuit, it is actually
It is one kind " automatic switch " that control high current running is gone with low current.Therefore automatic adjustment is played in circuit, safeguard protection, is turned
The effects of changing circuit.Relay generally has and can reflect certain input variable (such as electric current, voltage, power, impedance, frequency, temperature
Degree, pressure, speed, light etc.) induction mechanism (importation)；There is the execution that " logical ", " disconnected " control can be realized to controlled circuit
Mechanism (output par, c)；Between the importation and output par, c of relay, there are also carry out coupling isolation, function to input quantity
Processing and intermediary agency's (drive part) that output par, c is driven.
Existing relay must correspond to pole wiring in use could make relay work, and relay
The device not protection to load power or power-down, when apparatus of load powers on or powers off suddenly, the voltage fed back in equipment can be damaged
Hurt relay.
For this purpose, making it is proposed that a kind of relay-indicating light circuit structure solves problems of the prior art
The installation site for facilitating adjustment fixture, for adapting to different testing requirements.
Utility model content
The purpose of this utility model is to provide a kind of relay-indicating light circuit structures, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the utility model provides the following technical solutions: a kind of relay-indicating light circuit structure, packet
Relay is included, the relay input terminal is connected separately with the first wiring and the second wiring, first wiring and the second wiring
End is equipped with the identical connecting terminal of specification, and the first wiring intermediate node is parallel with the first light emitting diode and the second hair
Optical diode, is connected with first resistor at the second wiring intermediate node, and the first resistor other end and first shine two
Pole pipe is connected with second light emitting diode the other end node, and the relay other end is equipped with normally opened contact, the normally opened touching
Point one end is electrically connected with 24V power supply, and the normally opened contact other end is connected with output line, the output line intermediate node punishment
It is not connected with diode and third light emitting diode, the third light emitting diode other end is connected with second resistance, and described
Two resistance and the diode other end are connect with 0V grounding point.
Preferably, first light emitting diode and the second light emitting diode cathode and anode directions are opposite.
Preferably, first light emitting diode, the second light emitting diode and third light emitting diode are that specification is identical
0805G light emitting diode.
Preferably, the third light emitting diode cathode direction is corresponding with 0V grounding point.
Preferably, the diode cathode direction is corresponding with 0V grounding point.
Preferably, the first resistor and second resistance are the identical 11K resistance of specification.
Compared with prior art, the utility model has the beneficial effects that
The utility model by control voltage by after the first light emitting diode and the second light emitting diode, then
Circuit is generated by first resistor, and the first light emitting diode and the second light emitting diode use " anode-cathode " parallel way,
Therefore regardless of polarity of voltage, always there is a light emitting diode can be lit, realize the instruction of control voltage.When after
After electric apparatus coil is plus control voltage, relay normally open contact closure, 24V supplies voltages export electricity by the contact outward
Pressure, while this voltage generates circuit to 0V grounding point by third light emitting diode and second resistance, third light emitting diode
It lights, indicating relay contact closure condition.Freewheeling diode is used for the reversed electricity generated absorbing load power or power-down moment
Pressure protects 24V power supply and relay contact.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model electrical connection schematic diagram.
In figure: 1 relay, 2 first wiring, 3 second wiring, 4 connecting terminals, 5 first light emitting diodes, 6 second shine
Diode, 7 first resistors, 8 normally opened contacts, 9 24V power supplys, 10 output lines, 11 diodes, 12 third light emitting diodes, 13
Two resistance, 14 0V grounding points.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of relay-indicating light circuit structure, including
Relay 1,1 input terminal of relay are connected separately with the first wiring 2 and the second wiring 3, and first wiring 2 and second connect
3 end of line is equipped with the identical connecting terminal 4 of specification, and 2 intermediate node of the first wiring is parallel with 5 He of the first light emitting diode
Second light emitting diode 6, is connected with first resistor 7 at 3 intermediate node of the second wiring, 7 other end of first resistor with
First light emitting diode 5 is connected with 6 the other end node of the second light emitting diode, and 1 other end of relay is equipped with normally opened touching
Point 8, described 8 one end of normally opened contact is electrically connected with 24V power supply 9, and 8 other end of normally opened contact is connected with output line 10, institute
It states and is connected separately with diode 11 and third light emitting diode 12 at 10 intermediate node of output line, the third light emitting diode 12
The other end is connected with second resistance 13, and the second resistance 13 and 11 other end of diode are connect with 0V grounding point 14.
Specifically, first light emitting diode 5 and 6 cathode and anode directions of the second light emitting diode are opposite.
Specifically, first light emitting diode 5, the second light emitting diode 6 and third light emitting diode 12 are specification phase
Same 0805G light emitting diode.
Specifically, the 12 cathode direction of third light emitting diode is corresponding with 0V grounding point 14.
Specifically, the positive extreme direction of the diode 11 is corresponding with 0V grounding point 14.
Specifically, the first resistor 7 and second resistance 13 are the identical 11K resistance of specification.
Structural principle: relay 1 controls voltage by after the first light emitting diode 5 and the second light emitting diode 6, then passes through
It crosses first resistor 7 and generates circuit, and the first light emitting diode 5 and the second light emitting diode 6 use " anode-cathode " parallel connection side
Formula, therefore regardless of polarity of voltage, always there is a light emitting diode can be lit, realizes that relay 1 controls the instruction of voltage.
When 1 coil of relay plus control voltage after, 1 normally opened contact 8 of relay closure, 24V power supply 9 provide voltage by the contact to
Outer output voltage, while this voltage generates circuit to 0V grounding point 14 by third light emitting diode 12 and second resistance 13,
Third light emitting diode 12 is lighted, 1 contact closure condition of indicating relay.Freewheeling diode 11 powers on or falls for absorbing load
The backward voltage that electric moment generates protects 24V power supply 9 and 1 contact of relay.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of relay-indicating light circuit structure, including relay (1), it is characterised in that: relay (1) input terminal point
It is not connected with the first wiring (2) and the second wiring (3), first wiring (2) and the second wiring (3) end are equipped with specification phase
Same connecting terminal (4), the first wiring (2) intermediate node are parallel with the first light emitting diode (5) and the second light-emitting diodes
It manages (6), is connected with first resistor (7) at the second wiring (3) intermediate node, first resistor (7) other end and first
Light emitting diode (5) is connected with the second light emitting diode (6) the other end node, and relay (1) other end is equipped with normally opened
Contact (8), described normally opened contact (8) one end are electrically connected with 24V power supply (9), and normally opened contact (8) other end is connected with defeated
Outlet (10) is connected separately with diode (11) and third light emitting diode (12), institute at output line (10) intermediate node
It states third light emitting diode (12) other end to be connected with second resistance (13), the second resistance (13) and diode (11) are another
End is connect with 0V grounding point (14).
2. a kind of relay-indicating light circuit structure according to claim 1, it is characterised in that: first light-emitting diodes
It is opposite to manage (5) and the second light emitting diode (6) cathode and anode directions.
3. a kind of relay-indicating light circuit structure according to claim 1, it is characterised in that: first light-emitting diodes
Managing (5), the second light emitting diode (6) and third light emitting diode (12) is the identical 0805G light emitting diode of specification.
4. a kind of relay-indicating light circuit structure according to claim 1, it is characterised in that: the third light-emitting diodes
It is corresponding with 0V grounding point (14) to manage (12) cathode direction.
5. a kind of relay-indicating light circuit structure according to claim 1, it is characterised in that: the diode (11) is just
Extreme direction is corresponding with 0V grounding point (14).
6. a kind of relay-indicating light circuit structure according to claim 1, it is characterised in that: the first resistor (7)
It is the identical 11K resistance of specification with second resistance (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196470.6U CN209133423U (en) | 2018-12-26 | 2018-12-26 | A kind of relay-indicating light circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196470.6U CN209133423U (en) | 2018-12-26 | 2018-12-26 | A kind of relay-indicating light circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209133423U true CN209133423U (en) | 2019-07-19 |
Family
ID=67249286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822196470.6U Expired - Fee Related CN209133423U (en) | 2018-12-26 | 2018-12-26 | A kind of relay-indicating light circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209133423U (en) |
-
2018
- 2018-12-26 CN CN201822196470.6U patent/CN209133423U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190719 Termination date: 20201226 |