CN112803933A - Anti-impact slow-conduction control electronic switch circuit - Google Patents
Anti-impact slow-conduction control electronic switch circuit Download PDFInfo
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- CN112803933A CN112803933A CN202110135532.6A CN202110135532A CN112803933A CN 112803933 A CN112803933 A CN 112803933A CN 202110135532 A CN202110135532 A CN 202110135532A CN 112803933 A CN112803933 A CN 112803933A
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- current limiting
- controlled switch
- delay processing
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- 239000003990 capacitor Substances 0.000 claims description 6
- 230000035939 shock Effects 0.000 claims description 2
- 230000001934 delay Effects 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
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Abstract
The invention discloses an anti-impact slow conduction control electronic switch circuit. The device comprises a controlled switch module, a current limiting module, a driving module and a control signal delay processing module; the input end of the controlled switch module is connected with the external input port, the output end of the controlled switch module is connected with the input end of the current limiting module, the output end of the current limiting module is connected with the load, the input end of the control signal delay processing module is connected with the control signal, the output end of the control signal delay processing module is connected with the input end of the driving module, and the output end of the driving module is connected with the controlled switch module. The invention has the functions of switching on or switching off the circuit, prevents overweight load, short circuit and instant overshoot, can delay a control signal source, reduces the impact of the load on a preceding power supply, and has the advantages of simple design, stable operation, long service life and low cost because all components formed by the circuit are universal parts.
Description
Technical Field
The invention relates to the technical field of switch circuits, in particular to an anti-impact slow conduction control electronic switch circuit.
Background
As is well known, in a system with many functional modules, the voltage domains of the functional modules may be the same, and only the difference in time sequence is required, and if each functional module is designed with a power supply circuit, the cost is high; if the relay is used for grading, the switch cost is high, the size is large and heavy, rapid peak interference is easily generated when the relay switch is switched, and the service life is limited; if a thyristor or other similar switching element devices (circuits) are adopted, when the design is unreasonable, the problems of abnormal operation of a preceding power supply, abnormal operation or damage of the switching circuit and the like can be caused.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, an object of the present invention is to provide an anti-surge slow-conduction control electronic switch circuit.
In order to achieve the purpose, the invention adopts the following technical scheme:
an anti-impact slow-conduction control electronic switch circuit comprises a controlled switch module, a current limiting module, a driving module and a control signal delay processing module;
the input end of the controlled switch module is connected with the external input port, the output end of the controlled switch module is connected with the input end of the current limiting module, the output end of the current limiting module is connected with the load, the input end of the control signal delay processing module is connected with the control signal, the output end of the control signal delay processing module is connected with the input end of the driving module, and the output end of the driving module is connected with the controlled switch module.
Preferably, the controlled switch module comprises an MOS transistor, a drain of the MOS transistor is connected to the external input port, a source of the MOS transistor is connected to the current limiting module, a gate of the MOS transistor is connected to the driving module,
preferably, the current limiting module comprises a current limiting resistor, one end of the current limiting resistor is connected with the controlled switch module, and the other end of the current limiting resistor is connected with the load.
Preferably, the control signal delay processing module includes a first resistor and a first capacitor, where one end of the first resistor is connected to the control signal, and the other end of the first resistor is connected to the driving module and grounded through the first capacitor.
Preferably, the driving module includes a switching tube, a base of the switching tube is connected to the control signal delay processing module, an emitter of the switching tube is grounded, and a collector of the switching tube is connected to the controlled switching module.
By adopting the scheme, the invention has the functions of switching on or switching off the circuit, prevents overweight load, short circuit and instant overshoot, can delay a control signal source and reduce the impact of the load on a preceding power supply, and has the advantages of simple design, stable operation, long service life and low cost because all components formed by the circuit are universal parts.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a specific circuit according to an embodiment of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 and fig. 2, the electronic switch circuit for preventing shock and delaying conduction provided in this embodiment includes a controlled switch module 1, a current limiting module 2, a driving module 3, and a control signal delay processing module 4;
the input end of the controlled switch module 1 is connected with the external input port, the output end of the controlled switch module 1 is connected with the input end of the current limiting module 2, the output end of the current limiting module 2 is connected with the load, the input end of the control signal delay processing module 4 is connected with the control signal, the output end of the control signal delay processing module is connected with the input end of the driving module 3, and the output end of the driving module 3 is connected with the controlled switch module 1.
In the embodiment, the controlled switch module 1 is connected with the current limiting module 2 in series to serve as a main channel of the switch circuit. The control signal delay processing module 4 is connected in series with the driving module 3, and is used as a control branch of the circuit and connected with the controlled port of the embodiment.
The specific circuit working principle is as follows:
the controlled switch module 1 of this embodiment includes a MOS transistor Q1, a drain of the MOS transistor Q1 is connected to an external input port, a source of the MOS transistor Q1 is connected to the current limiting module 2, a gate of the MOS transistor Q1 is connected to the driving module 3, an input terminal of the controlled switch module 1 is connected to an anode and a cathode of an external power source as an input terminal of the switch circuit, and the controlled switch module 1 receives control of a control signal to turn on or off a main channel.
The current limiting module 2 of this embodiment includes a current limiting resistor RL, one end of the current limiting resistor RL is connected to the controlled switch module 1, the other end is connected to the load, the output end of the current limiting module 2 is connected to the load as the output end of this embodiment, and the current limiting resistor RL is used to prevent the load from being overloaded, short-circuited, and overshot instantaneously.
The control signal delay processing module 4 of this embodiment includes a first resistor R1 and a first capacitor C1, one end of the first resistor R1 is connected to the control signal, and the other end of the first resistor R1 is connected to the driving module 3 and grounded through the first capacitor C1, the first resistor R1 of the control signal delay processing module 4 is connected to an external control signal source, and the output end of the control signal delay processing module 4 is connected to the input end of the driving module 3. The control signal delay processing module 4 is used for filtering out transient interference to prevent misoperation, delaying the control signal with the too fast rising edge by a certain amount, and reducing the impact of the load on the preceding stage power supply.
The driving module 3 of this embodiment includes a switch Q2, the base of the switch Q2 is connected to the control signal delay processing module 4, the emitter of the switch Q2 is grounded, and the collector of the switch Q2 is connected to the controlled switch module 1. The driving module 3 is mainly used for amplifying current and voltage of a control signal by a switching tube Q2, and ensures that the controlled switching module reliably and stably works in a connection or disconnection state.
Compared with the prior similar circuit, the circuit of the embodiment mainly realizes the main channel structure of the switch circuit, has the current regulation capability and prevents the impact of the load on the front-stage power supply; the control branch of the switch circuit has the capability of absorbing instantaneous interference signals and prevents the switch circuit from misoperation.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. The utility model provides an protecting against shock delays to turn on control electronic switch circuit which characterized in that: the device comprises a controlled switch module, a current limiting module, a driving module and a control signal delay processing module;
the input end of the controlled switch module is connected with the external input port, the output end of the controlled switch module is connected with the input end of the current limiting module, the output end of the current limiting module is connected with the load, the input end of the control signal delay processing module is connected with the control signal, the output end of the control signal delay processing module is connected with the input end of the driving module, and the output end of the driving module is connected with the controlled switch module.
2. An anti-surge slow-conduction control electronic switch circuit as claimed in claim 1, wherein: the controlled switch module comprises an MOS tube, the drain electrode of the MOS tube is connected with the external input port, the source electrode of the MOS tube is connected with the current limiting module, and the grid electrode of the MOS tube is connected with the driving module.
3. An anti-surge slow-conduction control electronic switch circuit as claimed in claim 1, wherein: the current limiting module comprises a current limiting resistor, one end of the current limiting resistor is connected with the controlled switch module, and the other end of the current limiting resistor is connected with the load.
4. An anti-surge slow-conduction control electronic switch circuit as claimed in claim 1, wherein: the control signal delay processing module comprises a first resistor and a first capacitor, wherein one end of the first resistor is connected with a control signal, and the other end of the first resistor is connected with the driving module and grounded through the first capacitor.
5. An anti-surge slow-conduction control electronic switch circuit as claimed in claim 1, wherein: the driving module comprises a switch tube, the base of the switch tube is connected with the control signal delay processing module, the emitting electrode of the switch tube is grounded, and the collector of the switch tube is connected with the controlled switch module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110135532.6A CN112803933A (en) | 2021-02-01 | 2021-02-01 | Anti-impact slow-conduction control electronic switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110135532.6A CN112803933A (en) | 2021-02-01 | 2021-02-01 | Anti-impact slow-conduction control electronic switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112803933A true CN112803933A (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110135532.6A Pending CN112803933A (en) | 2021-02-01 | 2021-02-01 | Anti-impact slow-conduction control electronic switch circuit |
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| CN (1) | CN112803933A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218927A (en) * | 2014-09-03 | 2014-12-17 | 苏州旭创科技有限公司 | Slow start circuit and optical module with same |
| CN205195250U (en) * | 2015-12-11 | 2016-04-27 | 深圳创维数字技术有限公司 | Electronic equipment and power protection circuit thereof |
| WO2017016242A1 (en) * | 2015-07-30 | 2017-02-02 | 深圳市中兴微电子技术有限公司 | Clock delay circuit |
| CN107294386A (en) * | 2017-06-23 | 2017-10-24 | 广东美的制冷设备有限公司 | DC power control circuit |
| CN208016076U (en) * | 2018-04-04 | 2018-10-26 | 旭源电子（珠海）有限公司 | A kind of surge current suppression circuit and LED drive power |
| CN209283552U (en) * | 2018-08-28 | 2019-08-20 | 珠海美光原科技股份有限公司 | Be switched on buffer circuit and LED light supplement lamp driving power |
| CN210578242U (en) * | 2019-08-23 | 2020-05-19 | 武汉诺科动力科技有限公司 | Power supply slow-start circuit |
-
2021
- 2021-02-01 CN CN202110135532.6A patent/CN112803933A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218927A (en) * | 2014-09-03 | 2014-12-17 | 苏州旭创科技有限公司 | Slow start circuit and optical module with same |
| WO2017016242A1 (en) * | 2015-07-30 | 2017-02-02 | 深圳市中兴微电子技术有限公司 | Clock delay circuit |
| CN205195250U (en) * | 2015-12-11 | 2016-04-27 | 深圳创维数字技术有限公司 | Electronic equipment and power protection circuit thereof |
| CN107294386A (en) * | 2017-06-23 | 2017-10-24 | 广东美的制冷设备有限公司 | DC power control circuit |
| CN208016076U (en) * | 2018-04-04 | 2018-10-26 | 旭源电子（珠海）有限公司 | A kind of surge current suppression circuit and LED drive power |
| CN209283552U (en) * | 2018-08-28 | 2019-08-20 | 珠海美光原科技股份有限公司 | Be switched on buffer circuit and LED light supplement lamp driving power |
| CN210578242U (en) * | 2019-08-23 | 2020-05-19 | 武汉诺科动力科技有限公司 | Power supply slow-start circuit |
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