CN201312297Y - Relay output circuit with state feedback function - Google Patents
Relay output circuit with state feedback function Download PDFInfo
- Publication number
- CN201312297Y CN201312297Y CNU2008202313509U CN200820231350U CN201312297Y CN 201312297 Y CN201312297 Y CN 201312297Y CN U2008202313509 U CNU2008202313509 U CN U2008202313509U CN 200820231350 U CN200820231350 U CN 200820231350U CN 201312297 Y CN201312297 Y CN 201312297Y
- Authority
- CN
- China
- Prior art keywords
- relay
- relay output
- field effect
- effect transistor
- output circuit
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model discloses a relay output circuit with state feedback function, comprising a signal input control unit, a relay output unit and a state signal feedback unit. The signal input control unit comprises a field effect transistor M1, a coil T1 of a relay RYS1, a voltage-stabilizer tube TVS1 and a current-limiting resistance R2. The relay output unit comprises a public contact KCO, a normally-open contact KAO and a normally-closed contact KBO of the relay RYS1. The state signal feedback unit comprises a triode Q1. The relay output circuit with state feedback function has the advantages of simple circuit, practicality and reliability, which is adaptable to capacity requirements of digital quantity output of engines and common control fields in industrial fields.
Description
Technical field
The utility model relates to a kind of relay output circuit, relates in particular to a kind of relay output circuit with state feedback function.
Background technology
The relay output circuit is as a kind of basic output circuit, and its task is that the faint digital signal of computer or controller output is converted to the digital drive signals that can control production process.According to the difference of scene load,, can select for use different power amplifying devices to constitute different switching values and drive output channel as indicator light, relay, contactor, motor, valve etc.But it is very complicated that these designs have, and reliability is but not necessarily high; Now on the locomotive, because the reliability height of the digital quantity of contact output, contact capacity is big etc., and characteristics are widely used.At existing problem in the above-mentioned prior art, a kind of novel relay output circuit of research and design with state feedback function, existing problem is very necessary in the prior art thereby overcome.
Summary of the invention
The utility model is at the proposition of above problem, and develops a kind of novel output circuit with state feedback function, thus problems such as the complex circuit, the reliability that solve existing design in the prior art are not high, the big cost height of investment.The technological means that the utility model adopts is as follows:
A kind of relay output circuit with state feedback function is characterized in that comprising control signal importation, relay output and status signal feedback fraction; Described control signal importation comprises coil T1, voltage-stabiliser tube TVS1 and the current-limiting resistance R2 of field effect transistor M1, relay R YS1; Described relay output comprises common KC0, normally opened contact KA0 and the normally-closed contact KB0 of relay R YS1; Described status signal feedback fraction comprises triode Q1; Wherein the control signal of control unit is sent the grid that end is connected to field effect transistor M1, the source electrode of field effect transistor M1 links to each other with positive supply by the coil T1 of relay R YS1, the drain electrode of field effect transistor M1 is by a current-limiting resistance R2 ground connection, the base stage of described triode Q1 is connected between the drain electrode and current-limiting resistance R2 of field effect transistor M1, feedback signal is sent to the feedback end of control unit by the collector electrode of triode Q1; The coil T1 two ends of described relay R YS1 are by ground connection behind ground capacity C1, C2 and the voltage-stabiliser tube TVS1.
Owing to adopted technique scheme, the output circuit that the utility model provides has novel structure, circuit is simple, practical and reliable, substantially can satisfy the capacity requirement of digital quantity output in the locomotive and the characteristics such as needs of general industry field control, belong to a kind of and collect economy and practicality is the novel relay output circuit with state feedback function of one, be with a wide range of applications.
Description of drawings
The utility model has only a width of cloth accompanying drawing:
Fig. 1 has the relay output circuit schematic diagram of state feedback function.
Embodiment
The relay output circuit with state feedback function that the utility model provides as shown in Figure 1 comprises control signal importation 1, relay output 2 and status signal feedback fraction 3 three parts composition; The break-make of control signal importation 1 control relay output 2, status signal feedback fraction 3 be according to corresponding high-low level signal of the high-low level signal on the resistance R 2 output, judges whether operate as normal of relay with this.Control signal comes from control chip, it through a not gate negate after, be connected to the grid of field effect transistor M1, the source electrode of field effect transistor M1 links to each other with positive supply by the coil of relay R YS1, the drain electrode of field effect transistor M1 is by a current-limiting resistance R2 ground connection, capacitor C 3 plays simple filter action, and ground capacity C1, the C2 at the coil two ends of relay R YS1 and voltage-stabiliser tube TVS1 are used for eliminating EMC and disturb.Relay output 2 is made up of a common KC0, a normally opened contact KA0 and a normally-closed contact KB0.The indicator light of free voltage grade, relay, contactor, motor, valve etc. between can connecting from 5VDC to 110VDC between KA0 and KC0 or KB0 and the KC0.When field effect pipe M1 grid is high level, field effect transistor M1 conducting, thus adding forward power supply VCC at the coil two ends of relay R YS1, the coil of relay R YS1 gets electric, the contact adhesive.In the adhesive of the contact of relay R YS1, the base stage of triode Q1 becomes high level, and triode Q1 conducting obtains the state feedback signal at the output of not gate U1.At input control signal is under the situation of high level, and the state feedback signal is a low level, is transmitted back to control unit.Control unit is judged whether operate as normal of relay R YS1 according to the high-low level of state feedback signal, further judges whether in time disconnect relay R YS1.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection range of the present utility model.
Claims (1)
1, a kind of relay output circuit with state feedback function is characterized in that comprising control signal importation (1), relay output (2) and status signal feedback fraction (3); Described control signal importation (1) comprises coil T1, voltage-stabiliser tube TVS1 and the current-limiting resistance R2 of field effect transistor M1, relay R YS1; Described relay output (2) comprises common KC0, normally opened contact KA0 and the normally-closed contact KB0 of relay R YS1; Described status signal feedback fraction (3) comprises triode Q1; Wherein the control signal of control unit is sent the grid that end is connected to field effect transistor M1, the source electrode of field effect transistor M1 links to each other with positive supply by the coil T1 of relay R YS1, the drain electrode of field effect transistor M1 is by a current-limiting resistance R2 ground connection, the base stage of described triode Q1 is connected between the drain electrode and current-limiting resistance R2 of field effect transistor M1, feedback signal is sent to the feedback end of control unit by the collector electrode of triode Q1; The coil T1 two ends of described relay R YS1 are by ground connection behind ground capacity C1, C2 and the voltage-stabiliser tube TVS1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202313509U CN201312297Y (en) | 2008-12-05 | 2008-12-05 | Relay output circuit with state feedback function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202313509U CN201312297Y (en) | 2008-12-05 | 2008-12-05 | Relay output circuit with state feedback function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201312297Y true CN201312297Y (en) | 2009-09-16 |
Family
ID=41109552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202313509U Expired - Fee Related CN201312297Y (en) | 2008-12-05 | 2008-12-05 | Relay output circuit with state feedback function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201312297Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109873403A (en) * | 2019-04-11 | 2019-06-11 | 深圳供电局有限公司 | Motor control circuit, control method and ring main unit |
| CN110456263A (en) * | 2019-08-02 | 2019-11-15 | 恒大智慧充电科技有限公司 | A kind of relay is adhered detection circuit, device and its detection method |
-
2008
- 2008-12-05 CN CNU2008202313509U patent/CN201312297Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109873403A (en) * | 2019-04-11 | 2019-06-11 | 深圳供电局有限公司 | Motor control circuit, control method and ring main unit |
| CN110456263A (en) * | 2019-08-02 | 2019-11-15 | 恒大智慧充电科技有限公司 | A kind of relay is adhered detection circuit, device and its detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103538481A (en) | Control system and brake protection device of electric automobile | |
| CN201312297Y (en) | Relay output circuit with state feedback function | |
| CN101696981B (en) | Program-controlled converter for output polarity of detecting instrument | |
| CN105656176A (en) | High-reliability power switching circuit and electronic device | |
| CN101739053A (en) | Power supply regulator with active foldback current limiting circuit | |
| CN101997468B (en) | Motor constant-speed forward/reverse rotation control circuit | |
| CN104241024A (en) | Relay control circuit | |
| CN105897252A (en) | Level shifter circuit applied to display device | |
| CN203617218U (en) | Circuit for driving two delays through single I/O port | |
| CN102955550B (en) | A kind of rack-mounted server system | |
| CN102943916B (en) | Electronic expansion valve driver | |
| CN201984318U (en) | Multifunctional multi-channel data acquisition on-site controller | |
| CN107835011A (en) | A kind of high reliability tristate output circuit | |
| CN202889312U (en) | Low power consumption low-voltage control relay with optical isolator | |
| CN201681764U (en) | Unicoil magnetic latching relay driving circuit | |
| CN101494450B (en) | Level transfer circuit | |
| CN207164565U (en) | A kind of NPN type proximity switch and intake common-source style PLC match circuits | |
| CN202083932U (en) | Multipath digital quantity input circuit based on Darlington transistor array | |
| CN201976078U (en) | Relay pulse signal driving circuit with turnoff protection | |
| CN202957794U (en) | Optical coupler drive circuit based on power supply of single power source | |
| CN103199837A (en) | Magnetic induction passive and contactless multifunctional limit switch device | |
| CN106357250B (en) | A kind of electronical time relay applied to railway locomotive | |
| CN202903932U (en) | Anti-interference three-state input detection circuit with low power consumption | |
| CN202487497U (en) | Isolation drive circuit of direct current contactor | |
| CN203645295U (en) | Device and system for switch value output protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20111205 |