CN207573330U - Small pressure difference level shifting circuit based on diode - Google Patents
Small pressure difference level shifting circuit based on diode Download PDFInfo
- Publication number
- CN207573330U CN207573330U CN201721826446.5U CN201721826446U CN207573330U CN 207573330 U CN207573330 U CN 207573330U CN 201721826446 U CN201721826446 U CN 201721826446U CN 207573330 U CN207573330 U CN 207573330U
- Authority
- CN
- China
- Prior art keywords
- diode
- node
- microprocessing unit
- power supply
- resistance
- 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.)
- Active
Links
Landscapes
- Logic Circuits (AREA)
Abstract
A kind of small pressure difference level shifting circuit based on diode, which is characterized in that the device includes:First microprocessing unit, the second microprocessing unit, first resistor, second resistance, first node, second node, unilateral diode, the first power supply, second source；The anode of first microprocessing unit and unilateral diode is coupled to first node, and one end of the second resistance and the first DC power supply electric property coupling, the other end of the second resistance are also coupled to first node with the first microprocessing unit；The cathode of the unilateral diode and one end of first resistor are coupled to second node, and the cathode of the unilateral diode is also coupled to second node with the second microprocessing unit；The contribution of the utility model is, solve thes problems, such as that the complicated flexibility of existing level shifting circuit is poor.The utility model utilizes diode unilateral conduction characteristic, realizes data transmission between varying level signal, of low cost, flexible design.
Description
【Technical field】
The utility model is related to circuit design field, more particularly to a kind of small pressure difference level conversion electricity based on diode
Road.
【Background technology】
Nowadays, electronic product is more widely used in real life, especially in the fields such as smart home, microprocessor list
Member obtains universal application, and the transmission of signal is usually realized between different microprocessing units, and different interelements usually exists
Different level, the prior art are typically that special level shifting circuit is set to realize signal voltage transitions application, however one
Often seem in the application environment of a little small pressure differences and waste one's talent on a petty job, improve production cost, and the configuration underaction in circuit.
Therefore, a kind of structure is simpler, and the less expensive signal voltage transitions technology suitable for small pressure difference of cost, which becomes a kind of reality, to be needed
It asks.
【Invention content】
The purpose of the utility model is to solve the above problems and to provide a kind of suitable for small pressure difference, simple in structure, configuration is flexible
Level shifting circuit.
To achieve the above object, the utility model provides a kind of small pressure difference level shifting circuit based on diode, special
Sign is that the device includes:First microprocessing unit, the second microprocessing unit, first resistor, second resistance, first node, the
Two nodes, unilateral diode, the first power supply, second source；
Wherein, the anode of first microprocessing unit and unilateral diode is coupled to first node,
Wherein, one end of the second resistance and the first DC power supply electric property coupling, the other end of the second resistance is also
First node is coupled to the first microprocessing unit；
Wherein, the cathode of the unilateral diode and one end of first resistor are coupled to second node, unidirectional two pole
The cathode of pipe is also coupled to second node with the second microprocessing unit；
Wherein, the other end ground connection of the first resistor；
Wherein, first microprocessing unit is powered by the first power supply；
Wherein, second microprocessing unit is powered by second source；
Wherein, the voltage difference of first power supply and second source in the range of 0.5V~0.7V.
The resistance value of the first resistor is equal to the resistance value of second resistance.
First power supply is DC power supply.
The second source is DC power supply.
The first resistor is pull down resistor.
The second resistance is pull-up resistor.
The contribution of the utility model is, efficiently solves asking for the complicated flexibility difference of existing level shifting circuit
Topic.The utility model utilizes diode unilateral conduction characteristic, realizes data transmission between varying level signal, of low cost, design
Flexibly.But it is only applicable to the conversion of small pressure difference（0.6V or so pressure differences）.Typical case such as 3.3V turns in 2.8V signal levels
It changes.
【Description of the drawings】
Fig. 1 is the electrical block diagram of the utility model.
【Attached drawing marks explanation】
First microprocessing unit~10~MCU1
Second microprocessing unit~20~MCU2
Second resistance~40 of first resistor~30
Second node~60 of first node~50
First power supply~80 of unilateral diode~70~VCC1
【Specific embodiment】
Hereinafter, the various embodiments of utility model will be described with reference to the drawings.However, embodiment can be by various
Form is implemented, and should not be considered as being restricted to embodiment mentioned in this article.But it theses embodiments are provided so that
It obtains the utility model and completely conveys the scope of protection of the utility model to those skilled in the art.In addition, in order to avoid obscuring
The theme of the disclosure may be not described in or show known function or structure.
Referring to Fig. 1, the present embodiment provides a kind of small pressure difference level shifting circuits based on diode, which is characterized in that should
Device includes:First microprocessing unit 10, the second microprocessing unit 20, first resistor 30, second resistance 40, first node 50,
Second node 60, unilateral diode 70, the first power supply 80, second source；
Wherein, the anode of first microprocessing unit 10 and unilateral diode 70 is coupled to first node 50,
Specifically, first and second naming rule is just to convenient those skilled in the art understand that this reality with reference to attached drawing
With novel technical solution, it is specifically defined that itself does not have priority, significance level, parameter size etc..
Specifically, first microprocessing unit can be the circuit including a microprocessor, can also be packet
Include the circuit including at least one microcontroller, or the combining form of a variety of circuits or chip, as long as phase can be realized
Answer function.It is understood that those skilled in the art, abnormal noise logging modle can also be common
Corresponding function is realized with pure hardware mode by the circuit that amplifier, comparator, triode, metal-oxide-semiconductor etc. combine.
Wherein, one end of the second resistance 40 and 80 electric property coupling of the first power supply, the other end of the second resistance 40
Also first node is coupled to the first microprocessing unit 10；
Specifically, the second resistance plays the role of pull-up；
Specifically, first power supply is DC power supply；
Wherein, the cathode of the unilateral diode 70 is coupled to second node 60, the list with one end of first resistor 30
To the cathode of diode 70 also second node is coupled to the second microprocessing unit 20；
Specifically, the other end ground connection of the first resistor 30；
Further, the first resistor plays the role of drop-down；
Specifically, the second source is DC power supply；
Wherein, first microprocessing unit 10 is by the first power supply power supply 80；
Wherein, the second microprocessor Unit 20 is powered by second source（It is not marked in figure）；
Wherein, the voltage difference of first power supply 80 and second source in the range of 0.5V~0.7V.
Specifically, the application environment of the utility model is small voltage, the specially pressure difference of 0.6V or so, in order to make this field
Technical staff more fully understands technical solution, the present embodiment provides typical 3.3V in the conversion of 2.8V signal levels.
Further, the resistance value of the first resistor 30 is equal to the resistance value of second resistance 40.
Further, in order to be better described the technical solution of the present embodiment, the first resistor and second resistance
Resistance is specially 10K.
Specifically：Citing such as VCC1=3.3V, VCC2=2.8V.
1. sense of situation is transmitted from MCU1 to MCU2, Vout1=3.3V during high level output, due to diode drop
The IO level for acting on Vout2 ≈ 3.3V-0.6V=2.7V, MCU2 is 2.8V, can identify high level；Vout1 during low level output
=0V, since R1 drop-downs effect Vout2 ≈ 0V, MCU2 can identify low level.In conclusion sense is from MCU1 to MCU2
Transmission can be achieved.
2. sense of situation is transmitted from MCU2 to MCU1, Vout2=2.8V during high level output, since diode is unidirectional
Conducting acts on, and Vout1 is pulled to 3.3V by resistance R2, and MCU2 can identify high level；Vout2=0V during low level output, passes through
Diode pulls down, and Vout1 ≈ 0.6V, MCU1 can identify low level.In conclusion transmitted from MCU2 to MCU1 can for sense
It realizes.
Take this, the contribution of the utility model is, efficiently solves the complicated flexibility of existing level shifting circuit
The problem of poor.The utility model utilizes diode unilateral conduction characteristic, realizes data transmission between varying level signal, at low cost
It is honest and clean, flexible design.
Although being disclosed by above example to the utility model, the scope of protection of the utility model not office
It is limited to this, under conditions of conceiving without departing from the utility model, deformation, replacement for done to above each component etc. falling into this
In the right of utility model.
Claims (6)
1. a kind of small pressure difference level shifting circuit based on diode, which is characterized in that the circuit includes:First microprocessor list
Member（10）, the second microprocessing unit（20）, first resistor（30）, second resistance（40）, first node（50）, second node
（60）, unilateral diode（70）, the first power supply（80）, second source；
Wherein, first microprocessing unit（10）With unilateral diode（70）Anode be coupled to first node（50）,
Wherein, the second resistance（40）One end and the first power supply（80）Electric property coupling, the second resistance（40）It is another
End also with the first microprocessing unit（10）It is coupled to first node；
Wherein, the unilateral diode（70）Cathode and first resistor（30）One end be coupled to second node（60）, it is described
Unilateral diode（70）Cathode also with the second microprocessing unit（20）It is coupled to second node；
Wherein, the first resistor（30）The other end ground connection；
Wherein, first microprocessing unit（10）By the first power supply（80）Power supply；
Wherein, second microprocessing unit（20）Unit is powered by second source；
Wherein, first power supply（80）With the voltage difference of second source in the range of 0.5V~0.7V.
2. the small pressure difference level shifting circuit based on diode as described in claim 1, which is characterized in that
The first resistor（30）Resistance value be equal to second resistance（40）Resistance value.
3. the small pressure difference level shifting circuit based on diode as described in claim 1, which is characterized in that
First power supply（80）For DC power supply.
4. the small pressure difference level shifting circuit based on diode as claimed in claim 3, which is characterized in that
The second source is DC power supply.
5. the small pressure difference level shifting circuit based on diode as described in claim 1, which is characterized in that
The first resistor（30）For pull down resistor.
6. the small pressure difference level shifting circuit based on diode as described in claim 1, which is characterized in that
The second resistance（40）For pull-up resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721826446.5U CN207573330U (en) | 2017-12-25 | 2017-12-25 | Small pressure difference level shifting circuit based on diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721826446.5U CN207573330U (en) | 2017-12-25 | 2017-12-25 | Small pressure difference level shifting circuit based on diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207573330U true CN207573330U (en) | 2018-07-03 |
Family
ID=62685800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721826446.5U Active CN207573330U (en) | 2017-12-25 | 2017-12-25 | Small pressure difference level shifting circuit based on diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207573330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021109081A1 (en) * | 2019-12-05 | 2021-06-10 | 武文静 | Micro-energy collection apparatus and method |
-
2017
- 2017-12-25 CN CN201721826446.5U patent/CN207573330U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021109081A1 (en) * | 2019-12-05 | 2021-06-10 | 武文静 | Micro-energy collection apparatus and method |
| US11750038B2 (en) | 2019-12-05 | 2023-09-05 | Wenjing Wu | Micro-energy acquisition device and micro-energy acquisition method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8452905B2 (en) | Serial port remote control circuit | |
| WO2019227977A1 (en) | Wireless charging and communication circuit, wireless electronic device, and wireless charging and communication circuit system | |
| CN207573330U (en) | Small pressure difference level shifting circuit based on diode | |
| CN103702460B (en) | The controlled heater circuit of a kind of Simple small power | |
| CN110880858A (en) | Drive circuit of switching power supply, half-bridge topology switching power supply and electronic equipment | |
| CN106712765B (en) | PEC L transmitter interface circuit based on CMOS process | |
| CN203405751U (en) | Novel voltage stabilizer circuit structure | |
| CN109828939A (en) | The level shifting circuit of universal serial bus | |
| CN201878110U (en) | Reverse current preventing circuit of multi-power-supply system for electric energy acquisition terminal | |
| CN204595843U (en) | Single line powered data transfer circuit | |
| CN210518267U (en) | Low-rate level conversion circuit | |
| CN100359502C (en) | Mixed logic level bidirectional bus converter and connection method thereof | |
| CN109960677B (en) | Extension circuit for USB interface | |
| CN203761250U (en) | Power square wave generation circuit with adjustable pulse width | |
| CN103389768B (en) | Differential signal driver | |
| CN104079020A (en) | Computer and charging circuit thereof | |
| CN207559972U (en) | A kind of level shifting circuit based on metal-oxide-semiconductor | |
| CN208836110U (en) | A kind of level shifting circuit | |
| CN202424677U (en) | Bi-level signal converting circuit | |
| CN102841669A (en) | Central processor frequency adjustment circuit | |
| CN107256199B (en) | Single bus circuit with low power consumption | |
| CN207910679U (en) | The circuit of negative pressure is generated by Switching Power Supply copped wave | |
| CN103916117A (en) | Magnetic coupling isolation drive circuit | |
| CN201226570Y (en) | Chip power supply and electronic device with the same | |
| CN204331527U (en) | Communication circuit and air conditioner of self-adaptation power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |