CN204030578U - The combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing - Google Patents
The combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing Download PDFInfo
- Publication number
- CN204030578U CN204030578U CN201420398038.4U CN201420398038U CN204030578U CN 204030578 U CN204030578 U CN 204030578U CN 201420398038 U CN201420398038 U CN 201420398038U CN 204030578 U CN204030578 U CN 204030578U
- Authority
- CN
- China
- Prior art keywords
- voltage stabilizing
- resistance
- circuit
- thermistor
- zinc
- 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
- Rectifiers (AREA)
Abstract
The utility model relates to electronic circuit, particularly relates to the combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing.The utility model provides the combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing, comprise thermistor PTC, reduction voltage circuit, piezo-resistance, isolation resistance R2, rectification and filtering and voltage stabilizing circuit, the input of described reduction voltage circuit is connected with described thermistor PTC, output is connected with described isolation resistance R2 with through described piezo-resistance, the other end of described isolation resistance R2 is connected with the input of voltage stabilizing circuit with filtering with described rectification, and described rectification is connected with control circuit with the output of voltage stabilizing circuit with filtering.The components and parts that the combinational circuit of the utility model thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing adopts are few, good stability, reliability are high, synchronously improve the design efficiency of engineer, reduce cost.
Description
Technical field
The utility model relates to electronic circuit, particularly relates to the combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing.
Background technology
In actual life, often occur that some damage the phenomenon of control circuit, as high pressure, the high voltage pulse of unknown cause, capacitance short-circuit that lightning voltage, electric spark produce, these phenomenons can cause the short circuit of control circuit even to burn out electrical equipment.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art; the combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing is provided; it can complete overcurrent protection, overtemperature protection, overvoltage insulation blocking function; for the designs such as lightning voltage, the high pressure of electric spark generation, the high voltage pulse of unknown cause provide low resistance discharge prevention passage, the damage to control circuit such as various high pressure, capacitance short-circuit effectively can be prevented.
The utility model is by realizing by the following technical solutions, this scheme provides the combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing, comprise thermistor PTC, reduction voltage circuit, piezo-resistance, isolation resistance R2, rectification and filtering and voltage stabilizing circuit, the input of described reduction voltage circuit is connected with described thermistor PTC, output is connected with described isolation resistance R2 with through described piezo-resistance, the other end of described isolation resistance R2 is connected with the input of voltage stabilizing circuit with filtering with described rectification, described rectification is connected with control circuit with the output of voltage stabilizing circuit with filtering.
As further improvement of the utility model, described rectification and filtering and voltage stabilizing circuit comprise diode D2, voltage stabilizing didoe ZD, electric capacity C2, the negative pole of described diode D2 is connected with described isolation resistance R2R1, the positive pole of described diode D2 is connected with the positive pole of described voltage stabilizing didoe ZD, the positive pole of described voltage stabilizing didoe ZD is connected with the negative pole of described electric capacity C2, and the negative pole of described voltage stabilizing didoe ZD is connected with the positive pole of described electric capacity C2.
As further improvement of the utility model, described rectification and filtering and voltage stabilizing circuit also comprise diode D1, the positive pole of described diode D1 is connected with the negative pole of described diode D2, and the negative pole of described diode D1 is connected with the negative pole of described voltage stabilizing didoe ZD.
As further improvement of the utility model, described thermistor PTC is non-linear thermistor PTC.
As further improvement of the utility model, the voltage of described piezo-resistance and the voltage of described voltage stabilizing didoe ZD in direct ratio.
As further improvement of the utility model, described reduction voltage circuit comprises electric capacity C1 in parallel and resistance R1.。
The beneficial effects of the utility model are: the components and parts that the combinational circuit of the utility model thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing adopts are few, good stability, reliability are high, synchronously improve the design efficiency of engineer, reduce cost.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the combinational circuit of the utility model thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing.
Embodiment
To illustrate below in conjunction with accompanying drawing and embodiment further illustrates the utility model.
As shown in Figure 1, the utility model provides the combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing, comprise thermistor PTC, reduction voltage circuit, piezo-resistance MOV, isolation resistance R2, rectification and filtering and voltage stabilizing circuit, the input of described reduction voltage circuit is connected with described thermistor PTC, output is connected with described isolation resistance R2 with through described piezo-resistance MOV, the other end of described isolation resistance R2 is connected with the input of voltage stabilizing circuit with filtering with described rectification, described rectification is connected with control circuit with the output of voltage stabilizing circuit with filtering.Thermistor PTC completes overcurrent protection, overtemperature protection; Piezo-resistance MOV completes as various film provides conductive discharge passage; when thunder and lightning, high pressure, capacitance short-circuit, capacitor transient stage short circuit; high pressure makes piezo-resistance MOV conducting; the big current produced makes thermistor PTC resistance value become rapidly large thus protect piezo-resistance MOV; complete the defencive function to circuit system simultaneously, substantially increase the reliability of electrical boiler circuit system.
As shown in Figure 1, described rectification and filtering and voltage stabilizing circuit comprise diode D2, voltage stabilizing didoe ZD, electric capacity C2, the negative pole of described diode D2 is connected with described isolation resistance R2, the positive pole of described diode D2 is connected with the positive pole of described voltage stabilizing didoe ZD, the positive pole of described voltage stabilizing didoe ZD is connected with the negative pole of described electric capacity C2, and the negative pole of described voltage stabilizing didoe ZD is connected with the positive pole of described electric capacity C2.
As shown in Figure 1, described rectification and filtering and voltage stabilizing circuit also comprise diode D1, and the positive pole of described diode D1 is connected with the negative pole of described diode D2, and the negative pole of described diode D1 is connected with the negative pole of described voltage stabilizing didoe ZD.Diode D1, diode D2, voltage stabilizing didoe ZD, electric capacity C2 complete rectification, filtering and voltage stabilizing function.
As shown in Figure 1, described thermistor PTC is non-linear thermistor PTC, according to the actual current of different control circuit and design temperature, its voltage need require that carrying out selection changes.
As shown in Figure 1, the voltage of described piezo-resistance MOV and the voltage of described voltage stabilizing didoe ZD in direct ratio.
As shown in Figure 1, described reduction voltage circuit comprises electric capacity C1 in parallel and resistance R1, electric capacity C1 and resistance R1 complete buck functionality.
This circuit also can be applicable to electrical boiler, electronic cooking-vessel, electronic door bell, micro-control circuit power supply etc.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.
Claims (6)
1. the combinational circuit of a thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing, it is characterized in that: comprise thermistor PTC, reduction voltage circuit, piezo-resistance, isolation resistance R2, rectification and filtering and voltage stabilizing circuit, the input of described reduction voltage circuit is connected with described thermistor PTC, output is connected with described isolation resistance R2 with through described piezo-resistance, the other end of described isolation resistance R2 is connected with the input of voltage stabilizing circuit with filtering with described rectification, and described rectification is connected with control circuit with the output of voltage stabilizing circuit with filtering.
2. the combinational circuit of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing according to claim 1, it is characterized in that: described rectification and filtering and voltage stabilizing circuit comprise diode D2, voltage stabilizing didoe ZD, electric capacity C2, the negative pole of described diode D2 is connected with described isolation resistance R2, the positive pole of described diode D2 is connected with the positive pole of described voltage stabilizing didoe ZD, the positive pole of described voltage stabilizing didoe ZD is connected with the negative pole of described electric capacity C2, and the negative pole of described voltage stabilizing didoe ZD is connected with the positive pole of described electric capacity C2.
3. the combinational circuit of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing according to claim 1, it is characterized in that: described rectification and filtering and voltage stabilizing circuit also comprise diode D1, the positive pole of described diode D1 is connected with the negative pole of described diode D2, and the negative pole of described diode D1 is connected with the negative pole of described voltage stabilizing didoe ZD.
4. the combinational circuit of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing according to claim 1, is characterized in that: described thermistor PTC is non-linear thermistor PTC.
5. the combinational circuit of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing according to claim 1, is characterized in that: the voltage of described piezo-resistance and the voltage of described voltage stabilizing didoe ZD in direct ratio.
6. the combinational circuit of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing according to claim 1, is characterized in that: described reduction voltage circuit comprises electric capacity C1 in parallel and resistance R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420398038.4U CN204030578U (en) | 2014-07-18 | 2014-07-18 | The combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420398038.4U CN204030578U (en) | 2014-07-18 | 2014-07-18 | The combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204030578U true CN204030578U (en) | 2014-12-17 |
Family
ID=52070406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420398038.4U Expired - Fee Related CN204030578U (en) | 2014-07-18 | 2014-07-18 | The combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204030578U (en) |
-
2014
- 2014-07-18 CN CN201420398038.4U patent/CN204030578U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202076780U (en) | Self-adapting anti-lightning anti-surging control circuit | |
| CN103166444A (en) | Remote turn-off control signal receiving circuit | |
| CN204068199U (en) | A kind of under-voltage surge current protection circuit | |
| CN203166499U (en) | IGBT overvoltage protection circuit of electromagnetic oven | |
| CN204030578U (en) | The combinational circuit of a kind of thermistor and Zinc-oxide piezoresistor and resistance-capacitance depressurization voltage stabilizing | |
| CN203397429U (en) | Special circuit breaker circuit of prepaid electricity meter | |
| CN204459865U (en) | A kind of power light source integral LED light emitting module | |
| CN203932969U (en) | A kind of low-voltage leakage protector with over-voltage protecting function | |
| CN204464983U (en) | Novel lightning protecting laptop circuit | |
| CN103326344A (en) | Overvoltage limiting circuit | |
| CN204167902U (en) | High safe Surge Protector | |
| CN203932967U (en) | A kind of coil controller | |
| CN204103480U (en) | A kind of charger reversal connection and short-circuit protection circuit | |
| CN202759272U (en) | Current limiting circuit for anti-explosion battery | |
| CN205407246U (en) | Photovoltaic lightning protection module | |
| CN205080676U (en) | Electronic circuit high pressure warning protection circuit | |
| CN203205837U (en) | Simple and practical surge suppression circuit and switch power supply | |
| CN203504139U (en) | Overvoltage protection device of water-turbine generator set | |
| CN203027133U (en) | Starting circuit based on quasi-resonance controller | |
| CN103796385A (en) | Induction LED actuator low in stand-by power consumption | |
| CN204989433U (en) | Take LED car light test circuit of excess temperature protection instruction | |
| CN204652211U (en) | Switching Power Supply current foldback circuit | |
| CN205921361U (en) | Explosion -proof buffer circuit of direct current export power supply | |
| CN203734301U (en) | Power grid surge voltage protection circuit | |
| CN205921377U (en) | Photo controls insurance circuit |
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: 20141217 Termination date: 20150718 |
|
| EXPY | Termination of patent right or utility model |