CN107733422A - Diode circuit with self-healing function - Google Patents
Diode circuit with self-healing function Download PDFInfo
- Publication number
- CN107733422A CN107733422A CN201710955072.5A CN201710955072A CN107733422A CN 107733422 A CN107733422 A CN 107733422A CN 201710955072 A CN201710955072 A CN 201710955072A CN 107733422 A CN107733422 A CN 107733422A
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- CN
- China
- Prior art keywords
- diode
- circuit
- output end
- resistance
- self
- 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.)
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/007—Fail-safe circuits
- H03K19/0075—Fail-safe circuits by using two redundant chains
Abstract
The invention provides a kind of diode circuit with self-healing function, including：First diode and the second diode, first diode are connected with the output end of the second diode；On-off circuit：It is connected between power supply and first diode and the input of the second diode；Sample comparison circuit：Including two inputs and an output end, two inputs of the sampling comparison circuit connect the input of first diode and the second diode respectively, and the output end of the sampling comparison circuit connects the on-off circuit.Cost of the present invention is cheap, can identify whether diode damages, and damage diode is rejected from circuit loop, circuit loop is added with standby diode, so as to improve the service life of product.
Description
Technical field
The present invention relates to electronic circuit technology field, in particular it relates to a kind of diode circuit with self-healing function.
Background technology
Diode is common in circuit and very important electronic component, and in use, the damage of diode is non-
Chang Duojian.In traditional circuit, the function of whole electronic product can be caused after the diode in main current supply circuit is in damage
Lose even circuit damage, so as to can not normal use, reduce the service life of product.
The content of the invention
For in the prior art the defects of, it is an object of the invention to provide a kind of diode circuit with self-healing function.
According to a kind of diode circuit with self-healing function provided by the invention, including：
First diode and the second diode, first diode are connected with the output end of the second diode；
On-off circuit：It is connected between power supply and first diode and the input of the second diode；
Sample comparison circuit：Including two inputs and an output end, two inputs of the sampling comparison circuit
The input of first diode and the second diode is connected respectively, is opened described in the output end connection of the sampling comparison circuit
Powered-down road.
Preferably, the sampling comparison circuit includes comparator, two inputs of the comparator pass through resistance respectively
R3 is connected the input of first diode and the second diode with resistance R4, and the output end of the comparator passes through resistance
The R6 connections on-off circuit.
Preferably, the both ends of first diode and the second diode are parallel with resistance R1 and resistance R2 respectively.
Compared with prior art, the present invention has following beneficial effect：
Cost of the present invention is cheap, can identify whether diode damages, and damage diode is rejected from circuit loop,
Circuit loop is added with standby diode, so as to improve the service life of product.
Brief description of the drawings
The detailed description made by reading with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the circuit theory diagrams of the present invention.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some changes and improvements can also be made.These belong to the present invention
Protection domain.
A kind of diode circuit with self-healing function provided by the invention is as shown in Figure 1.
First diode D1 is connected with the second diode D2 output end.On-off circuit SW1 is connected to power supply and the one or two
Between pole pipe D1 and the second diode D2 input.Sampling comparison circuit includes two inputs and an output end, samples
Two inputs of comparison circuit connect the first diode D1 and the second diode D2 input respectively, sample comparison circuit
Output end connecting valve circuit SW1.
Sampling comparison circuit includes comparator U1, and comparator U1 two inputs (IN+, IN-) pass through resistance R3 respectively
The first diode D1 and the second diode D2 input are connected with resistance R4, comparator U1 output end (OUT) passes through resistance
R6 connecting valve circuits SW1.R3, R4, R5, for typical case anti-phase ratio discharge circuit R3=R4, Vout=- R5/R4*Vin, R6
For the protection of output current limiting resistance protection load short circuits or overvoltage impact.
First diode D1 and the second diode D2 both ends be parallel with respectively resistance R1 and resistance R2, R1 and R2 by with
The parallel connection of diode reaches, and in diode operation, resistance both ends maintain 0.4V to 0.7V voltage, when diode does not work
Ensure that diode both end voltage is identical.
The operation principle of the system is as follows：On-off circuit SW1 acquiescence diode D2 accesses loop, is maintained at U1 Vin ends
One -0.4 voltage for arriving -0.7V, the voltage that can obtain 2.5V a to 5V in Vout by a ratio amplifier are used for protecting
On-off circuit SW1 is held to turn on Pin1 in Pin2, after D2 is damaged due to the surge impact of excessively stream or overvoltage and industrial environment,
Either short circuit or open circuit all can cause Vin voltage to drop near 0V, and at this moment U1 Vout can be also reduced near 0V
Cause Sw1 be switched to Pin3 turned on Pin1 conducting after Vin voltages can be+0.4 to+0.7Vout can always for 0 keep Sw1
Pin3 turned on Pin1.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the case where not conflicting, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (3)
- A kind of 1. diode circuit with self-healing function, it is characterised in that including：First diode and the second diode, first diode are connected with the output end of the second diode；On-off circuit：It is connected between power supply and first diode and the input of the second diode；Sample comparison circuit：Including two inputs and an output end, two inputs difference of the sampling comparison circuit Connect the input of first diode and the second diode, the output end connection switch electricity of the sampling comparison circuit Road.
- 2. the diode circuit according to claim 1 with self-healing function, it is characterised in that the sampling comparison circuit bag Comparator is included, two inputs of the comparator are connected first diode and second with resistance R4 by resistance R3 respectively The input of diode, the output end of the comparator pass through the resistance R6 connections on-off circuit.
- 3. the diode circuit according to claim 1 with self-healing function, it is characterised in that first diode and The both ends of two diodes are parallel with resistance R1 and resistance R2 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710955072.5A CN107733422A (en) | 2017-10-13 | 2017-10-13 | Diode circuit with self-healing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710955072.5A CN107733422A (en) | 2017-10-13 | 2017-10-13 | Diode circuit with self-healing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107733422A true CN107733422A (en) | 2018-02-23 |
Family
ID=61211369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710955072.5A Withdrawn CN107733422A (en) | 2017-10-13 | 2017-10-13 | Diode circuit with self-healing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107733422A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182392A (en) * | 1995-04-19 | 1998-05-20 | Gec阿尔斯托姆Acec运输公司 | Continuous input cell for data acquisition circuit |
| CN1420622A (en) * | 2001-11-19 | 2003-05-28 | 精工电子有限公司 | Diode circuit |
| US20100289518A1 (en) * | 2009-05-15 | 2010-11-18 | Ene Technology Inc. | Circuit and method for detecting faulty diode |
| US20100289519A1 (en) * | 2009-05-15 | 2010-11-18 | Ene Technology Inc. | Circuit for detecting faulty diode |
-
2017
- 2017-10-13 CN CN201710955072.5A patent/CN107733422A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182392A (en) * | 1995-04-19 | 1998-05-20 | Gec阿尔斯托姆Acec运输公司 | Continuous input cell for data acquisition circuit |
| CN1420622A (en) * | 2001-11-19 | 2003-05-28 | 精工电子有限公司 | Diode circuit |
| US20100289518A1 (en) * | 2009-05-15 | 2010-11-18 | Ene Technology Inc. | Circuit and method for detecting faulty diode |
| US20100289519A1 (en) * | 2009-05-15 | 2010-11-18 | Ene Technology Inc. | Circuit for detecting faulty diode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191211 Address after: 201114 room 8, building 2388, 501 Chen Cheng Road, Shanghai, Minhang District Applicant after: CAMBRIDGE INDUSTRIES (SHANGHAI) CO., LTD. Address before: 201114 room 8, building 2388, 501 Chen Cheng Road, Shanghai, Minhang District Applicant before: CAMBRIDGE INDUSTRIES (SHANGHAI) CO., LTD. Applicant before: CAMBRIDGE ELECTRONIC (ZHEJIANG) CO., LTD. |
|
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180223 |