CN204496314U - A kind of protection circuit of servo-driver - Google Patents
A kind of protection circuit of servo-driver Download PDFInfo
- Publication number
- CN204496314U CN204496314U CN201520208962.6U CN201520208962U CN204496314U CN 204496314 U CN204496314 U CN 204496314U CN 201520208962 U CN201520208962 U CN 201520208962U CN 204496314 U CN204496314 U CN 204496314U
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- fan
- servo
- comparator
- 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
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
The utility model discloses a kind of protection circuit of servo-driver; comprise temperature sensing circuit, temperature reference circuit, comparator circuit, on-off circuit, fan work circuit and fan; described temperature sensing circuit is connected with the input end of comparator circuit with temperature reference circuit; described on-off circuit is connected with the output terminal of comparator circuit; described fan work circuit is connected with on-off circuit, and described fan is connected with fan work circuit.The utility model passes through the numerical value of comparator circuit C.T. testing circuit and temperature reference circuit, according to conducting and the shutoff of comparative result gauge tap circuit, and then realizes the open and close of fan work control circui fan.
Description
Technical field
The utility model relates to servo-driver technical field, more particularly, and particularly a kind of protection circuit of servo-driver.
Background technology
Along with the development of Power Electronic Technique, microelectric technique and modern control theory, servo-driver is widely used in industry-by-industry.A large amount of heats can be produced in the servo-driver course of work, be worked by heating radiator to dispel the heat in prior art always, there is the shortcoming of the wasting of resources like this.Therefore, how designing a kind of protection circuit that can control heating radiator work according to temperature is one of direction of studying of those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of protection circuit that can control the servo-driver of fan work according to temperature in real time.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of protection circuit of servo-driver; comprise temperature sensing circuit, temperature reference circuit, comparator circuit, on-off circuit, fan work circuit and fan; described temperature sensing circuit is connected with the input end of comparator circuit with temperature reference circuit; described on-off circuit is connected with the output terminal of comparator circuit; described fan work circuit is connected with on-off circuit, and described fan is connected with fan work circuit.
Preferably, described temperature sensing circuit comprises the first resistance and thermistor, and described comparator circuit is a comparer, and described temperature reference circuit is one second resistance; One end of described first resistance is connected with power supply VCC, and its other end is through thermistor ground connection, and described first resistance is connected with the input anode of comparer with the link of thermistor; One end of described second resistance is connected with power supply VCC, and its other end is connected with the input cathode of comparer.
Preferably, described on-off circuit comprises the 3rd resistance, the 4th resistance, triode and light emitting diode, described 3rd resistance is connected between the output terminal of comparator circuit and the base stage of triode, the grounded emitter of described triode, its collector is connected with power supply VCC by after light emitting diode and the 4th resistance successively, and described fan work circuit is connected with the collector of triode.
Compared with prior art, the utility model has the advantage of: the utility model passes through the numerical value of comparator circuit C.T. testing circuit and temperature reference circuit, according to conducting and the shutoff of comparative result gauge tap circuit, and then realize the open and close of fan work control circui fan.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of the protection circuit of servo-driver described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Consult shown in Fig. 1; the utility model provides a kind of protection circuit of servo-driver; comprise temperature sensing circuit 1, temperature reference circuit 3, comparator circuit 2, on-off circuit 4, fan work circuit 5 and fan 6; described temperature sensing circuit 1 is connected with the input end of temperature reference circuit 3 with comparator circuit 2; described on-off circuit 4 is connected with the output terminal of comparator circuit 2; described fan work circuit 5 is connected with on-off circuit 4, and described fan 6 is connected with fan work circuit 5.
In the utility model, described temperature sensing circuit 1 comprises the first resistance R1 and thermistor RT, and described comparator circuit 2 is a comparer, and described temperature reference circuit 3 is one second resistance R2; One end of described first resistance R1 is connected with power supply VCC, and its other end is through thermistor RT ground connection, and described first resistance R1 is connected with the input anode of comparer with the link of thermistor RT; One end of described second resistance R2 is connected with power supply VCC, and its other end is connected with the input cathode of comparer.
In the utility model, described on-off circuit 4 comprises the 3rd resistance R3, the 4th resistance R4, triode Q1 and LED, described 3rd resistance R3 is connected between the output terminal of comparator circuit 2 and the base stage of triode Q1, the grounded emitter of described triode Q1, its collector is connected with power supply VCC by after LED and the 4th resistance R4 successively, and described fan work circuit 5 is connected with the collector of triode Q1.
The principle of work of the protection circuit of servo-driver of the present utility model is: in use, resistance according to the change thermistor RT of temperature in servo-driver also can change, can respective change be there is in the voltage of the first resistance R1 and thermistor RT junction, the magnitude of voltage of this changing value and the second resistance R2 end is compared, as this changing value is greater than the magnitude of voltage of the second resistance R2 end, then illustrate, servo-driver is in the higher state of temperature, now comparer U1 output HIGH voltage, drive triode Q1 conducting, LED is lighted (illustrating that temperature is high) simultaneously, fan work circuit 5 starts, fan 6 is started working and is lowered the temperature.
The utility model passes through the numerical value of comparator circuit C.T. testing circuit and temperature reference circuit, according to conducting and the shutoff of comparative result gauge tap circuit, and then realizes the open and close of fan work control circui fan.
Although describe embodiment of the present utility model by reference to the accompanying drawings; but patent owner can make various distortion or amendment within the scope of the appended claims; as long as be no more than the protection domain described by claim of the present utility model, all should within protection domain of the present utility model.
Claims (3)
1. the protection circuit of a servo-driver; it is characterized in that: comprise temperature sensing circuit, temperature reference circuit, comparator circuit, on-off circuit, fan work circuit and fan; described temperature sensing circuit is connected with the input end of comparator circuit with temperature reference circuit; described on-off circuit is connected with the output terminal of comparator circuit; described fan work circuit is connected with on-off circuit, and described fan is connected with fan work circuit.
2. the protection circuit of servo-driver according to claim 1, is characterized in that: described temperature sensing circuit comprises the first resistance and thermistor, and described comparator circuit is a comparer, and described temperature reference circuit is one second resistance; One end of described first resistance is connected with power supply VCC, and its other end is through thermistor ground connection, and described first resistance is connected with the input anode of comparer with the link of thermistor; One end of described second resistance is connected with power supply VCC, and its other end is connected with the input cathode of comparer.
3. the protection circuit of servo-driver according to claim 1; it is characterized in that: described on-off circuit comprises the 3rd resistance, the 4th resistance, triode and light emitting diode; described 3rd resistance is connected between the output terminal of comparator circuit and the base stage of triode; the grounded emitter of described triode; its collector is connected with power supply VCC by after light emitting diode and the 4th resistance successively, and described fan work circuit is connected with the collector of triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520208962.6U CN204496314U (en) | 2015-04-07 | 2015-04-07 | A kind of protection circuit of servo-driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520208962.6U CN204496314U (en) | 2015-04-07 | 2015-04-07 | A kind of protection circuit of servo-driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204496314U true CN204496314U (en) | 2015-07-22 |
Family
ID=53575613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520208962.6U Expired - Fee Related CN204496314U (en) | 2015-04-07 | 2015-04-07 | A kind of protection circuit of servo-driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204496314U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511520A (en) * | 2016-01-15 | 2016-04-20 | 中山芯达电子科技有限公司 | Automatic heat radiation protection circuit |
| CN112491259A (en) * | 2020-11-23 | 2021-03-12 | 无锡科索电子有限公司 | Low-power-consumption switching power supply with fan |
-
2015
- 2015-04-07 CN CN201520208962.6U patent/CN204496314U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511520A (en) * | 2016-01-15 | 2016-04-20 | 中山芯达电子科技有限公司 | Automatic heat radiation protection circuit |
| CN112491259A (en) * | 2020-11-23 | 2021-03-12 | 无锡科索电子有限公司 | Low-power-consumption switching power supply with fan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203352423U (en) | Switching tube driving amplifying circuit for switching power supply | |
| CN102129262A (en) | Temperature control system | |
| CN204496314U (en) | A kind of protection circuit of servo-driver | |
| CN102444603A (en) | Fan control circuit | |
| CN204068678U (en) | A kind of Switching Power Supply output over-voltage protection and thermal-shutdown circuit | |
| CN102043413A (en) | Temperature control circuit | |
| CN203983951U (en) | For the high accuracy thermal-shutdown circuit of power management chip | |
| CN204425317U (en) | A kind of buffer circuit of servo-driver | |
| CN104571198A (en) | Sensitivity-adjustable temperature control circuit | |
| CN204068907U (en) | A kind of integrated triode ON-OFF control circuit | |
| CN204425314U (en) | A kind of opto-coupled feedback isolator | |
| CN107203241A (en) | A kind of bias current generating circuit | |
| CN204832998U (en) | Temperature automatic control of chicken hatching house | |
| CN203278207U (en) | Switching circuit with overheat switch-off function | |
| CN206564538U (en) | A kind of temperature control soft starting circuit | |
| CN204514408U (en) | A kind of infrared interface circuit for gas meter, flow meter | |
| CN103458552B (en) | A kind of LED lamp and start control circuit thereof | |
| CN105578623A (en) | Automatic heating circuit | |
| CN205249502U (en) | Low temperature self -heating protection circuit | |
| CN204705919U (en) | A kind of constant temperature control circuit | |
| CN204557250U (en) | A kind of electric distribution box Automatic Temperature Control | |
| CN204155166U (en) | Radiator valve circuit | |
| CN204425315U (en) | A kind of photoisolator | |
| CN204180338U (en) | A kind of LED drive circuit | |
| CN204227484U (en) | Microwave oven with hot air convection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20160407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |