CN207200261U - A kind of electrical engineering protector - Google Patents
A kind of electrical engineering protector Download PDFInfo
- Publication number
- CN207200261U CN207200261U CN201720854778.8U CN201720854778U CN207200261U CN 207200261 U CN207200261 U CN 207200261U CN 201720854778 U CN201720854778 U CN 201720854778U CN 207200261 U CN207200261 U CN 207200261U
- Authority
- CN
- China
- Prior art keywords
- triode
- resistance
- relay
- diode
- light emitting
- 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
- Thermally Actuated Switches (AREA)
Abstract
The utility model discloses a kind of electrical engineering protector; including first resistor to the 5th resistance, the first light emitting diode, the second light emitting diode, the first triode, the second triode, potentiometer, thermistor, relay, diode and battery; when electrical equipment hinders hot-spot for some reason; when thermistor is heated above preset temperature, its resistance will exceed more than 10k Ω.Then the first triode ON, the cut-off of the second triode, the second diode displaying red alarm, relay electric-loss release, electrical equipment shut down, and reach protection purpose.Compared with prior art, the utility model is by the temperature of induction electric equipment, when electrical equipment causes temperature too high because of a variety of causes, auto power off, prevent electrical equipment from causing excessive damage occur because of overheat, prevent the generation of security incident, the value with popularization and application.
Description
Technical field
It the utility model is related to electrical engineering equipment technical field, more particularly to a kind of electrical engineering protector.
Background technology
The electromechanical equipment that automatic lathe used, Electric heat oven, ball mill etc. are continuously run in production, and it is other nobody
Equipment on duty, because accident caused by motor overheating or temperature controller failure happens occasionally, it is necessary to take corresponding security measures.
Utility model content
The purpose of this utility model is that to solve the above problems and provides a kind of electrical engineering protector.
The utility model is achieved through the following technical solutions above-mentioned purpose：
The utility model includes first resistor to the 5th resistance, the first light emitting diode, the second light emitting diode, the one or three
Pole pipe, the second triode, potentiometer, thermistor, relay, diode and battery, the positive pole of battery simultaneously with relay
First end, the negative pole of diode, the first end of second resistance, the first end of potentiometer, the sliding end of potentiometer and first resistor
First end connection, the negative pole of the battery first end with the 5th resistance, the first end of 3rd resistor, the first of thermistor simultaneously
End is connected with the negative pole of the first light emitting diode, and the second end of first resistor is connected with the positive pole of the first light emitting diode, current potential
Second end of device is connected with the second end of thermistor and the base stage of the first triode simultaneously, and the colelctor electrode of the first triode is simultaneously
It is connected with the negative pole of the second light emitting diode and the first end of the 4th resistance, the positive pole of the second light emitting diode and second resistance
Second end is connected, and the emitter stage of the first triode is connected with the emitter stage of the second triode and the second end of 3rd resistor simultaneously,
Second end of the 4th resistance is connected with the second end of the 5th resistance and the base stage of the second triode simultaneously, the current collection of the second triode
Pole is connected with the second end of relay and the positive pole of diode simultaneously, and the control terminal of relay is connected on the electric power loop of electrical appliance
In.
The beneficial effects of the utility model are：
The utility model is a kind of electrical engineering protector, and compared with prior art, the utility model passes through induction electric
The temperature of equipment, when electrical equipment causes temperature too high because of a variety of causes, auto power off, prevent electrical equipment because of overheat
And cause excessive damage occur, the generation of security incident is prevented, the value with popularization and application.
Brief description of the drawings
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1：The utility model includes first resistor R1 to the 5th resistance R5, the first LED 1, the
Two LEDs 2, the first triode VT1, the second triode VT2, potentiometer RP, thermistor RT, relay K, two
Pole pipe VD and battery E, battery E positive pole simultaneously with relay K first end, diode VD negative pole, second resistance R2 the
One end, potentiometer RP first end, potentiometer RP sliding end connect with first resistor R1 first end, and battery E negative pole is same
The resistance R5 of Shi Yu five first end, 3rd resistor R3 first end, thermistor RT first end and the first light emitting diode
LED1 negative pole connection, first resistor R1 the second end is connected with the positive pole of the first LED 1, and the of potentiometer RP
Two ends are connected with thermistor RT the second end and the first triode VT1 base stage simultaneously, the first triode VT1 colelctor electrode
It is connected simultaneously with the negative pole of the second LED 2 and the 4th resistance R4 first end, the second LED 2 is just
Pole is connected with second resistance R2 the second end, the first triode VT1 emitter stage simultaneously with the second triode VT2 emitter stage and
3rd resistor R3 the second end connection, the 4th resistance R4 the second end while the second end with the 5th resistance R5 and the second triode
VT2 base stage connection, the second triode VT2 colelctor electrode are connected with relay K the second end and diode VD positive pole simultaneously,
Relay K control terminal is connected in the electric power loop of electrical appliance.
Operation principle of the present utility model is as follows：
Thermistor RT is attached at the heating of electrical equipment, at the coil of such as motor, transformer, power tube,
Under normal circumstances, thermistor RT is in normal temperature state, and its total resistance value is less than 1k Ω, and now, the first triode VT1 is cut
Only, the second triode VT2 is turned on, and relay K obtains electric adhesive normally opened contact, and electrical equipment is operated by mains-supplied.
When electrical equipment hinders hot-spot for some reason, when thermistor RT is heated above preset temperature, its resistance will surpass
Cross more than 10k Ω.Then the first triode VT1 conductings, the second triode VT2 cut-offs, the second LED 2 shows red
Color is alarmed, and relay K dead electricity release, electrical equipment shuts down, and reaches protection purpose.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (1)
- A kind of 1. electrical engineering protector, it is characterised in that：Including first resistor to the 5th resistance, the first light emitting diode, Two light emitting diodes, the first triode, the second triode, potentiometer, thermistor, relay, diode and battery, battery Positive pole simultaneously with the first end of relay, the negative pole of diode, the first end of second resistance, the first end of potentiometer, potentiometer Sliding end connected with the first end of first resistor, the negative pole of the battery first end with the 5th resistance, the of 3rd resistor simultaneously One end, the first end of thermistor connect with the negative pole of the first light emitting diode, the second end of first resistor and first luminous two The positive pole connection of pole pipe, the second end of potentiometer are connected with the second end of thermistor and the base stage of the first triode simultaneously, the The colelctor electrode of one triode is connected with the negative pole of the second light emitting diode and the first end of the 4th resistance simultaneously, the second light-emitting diodes Second end of the positive pole of pipe and second resistance connects, the emitter stage of the first triode simultaneously with the emitter stage of the second triode and the The second end connection of three resistance, the second end of the 4th resistance connect with the second end of the 5th resistance and the base stage of the second triode simultaneously Connect, the colelctor electrode of the second triode is connected with the second end of relay and the positive pole of diode simultaneously, the control terminal string of relay It is associated in the electric power loop of electrical appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720854778.8U CN207200261U (en) | 2017-07-14 | 2017-07-14 | A kind of electrical engineering protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720854778.8U CN207200261U (en) | 2017-07-14 | 2017-07-14 | A kind of electrical engineering protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207200261U true CN207200261U (en) | 2018-04-06 |
Family
ID=61785676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720854778.8U Expired - Fee Related CN207200261U (en) | 2017-07-14 | 2017-07-14 | A kind of electrical engineering protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207200261U (en) |
-
2017
- 2017-07-14 CN CN201720854778.8U patent/CN207200261U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105226611A (en) | Short circuit/the overload protecting circuit of single-phase transformer | |
| CN204090219U (en) | A kind of overheating protection circuit of LED | |
| CN207200261U (en) | A kind of electrical engineering protector | |
| CN202930914U (en) | Machine tool motor overtemperature protection circuit for teaching | |
| CN205141635U (en) | Motor overheat protects warning circuit | |
| CN204104196U (en) | LED lamp and excess temperature, overvoltage crowbar | |
| CN203748082U (en) | LED fluorescent lamp safety device | |
| CN203583241U (en) | Novel boiler control device | |
| CN206135388U (en) | But automatic disconnection's energy -conserving circuit | |
| CN205883643U (en) | Overheated and current foldback circuit of LED lamp plain type | |
| CN107239085A (en) | A kind of fish tank water temperature automatic control circuit | |
| CN104406273B (en) | Protective circuit of central air-conditioning cooling fan | |
| CN205828277U (en) | A kind of relay | |
| CN207732412U (en) | A kind of overtemperature protection system for cash box | |
| CN205124079U (en) | LED (Light -Emitting diode) driving device | |
| CN106374423A (en) | Energy-saving efficient circuit structure | |
| CN203036834U (en) | Hot water supplying device capable of being conveniently installed on ordinary vending machine | |
| CN203104810U (en) | Heating device for preventing dry heating | |
| CN203918160U (en) | One can automatically shut down energy-efficient constant-temperature soldering iron device | |
| CN202490995U (en) | Integrated electric soldering iron with protective function | |
| CN207569610U (en) | High pressure lamp bar device | |
| CN205793411U (en) | A kind of protection circuit for electric automobile PTC (Positive Temperature Coefficient) electric heater | |
| CN204478385U (en) | Central air-conditioning cooling blower protection circuit | |
| CN2696256Y (en) | Electric blanket with overtemperature protection device | |
| CN104638614A (en) | Motor temperature monitor for rotary machinery |
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: 20180406 Termination date: 20180714 |