CN107453343A - A kind of anti-static protective circuit and equipment - Google Patents
A kind of anti-static protective circuit and equipment Download PDFInfo
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- CN107453343A CN107453343A CN201710750648.4A CN201710750648A CN107453343A CN 107453343 A CN107453343 A CN 107453343A CN 201710750648 A CN201710750648 A CN 201710750648A CN 107453343 A CN107453343 A CN 107453343A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
Abstract
The embodiment of the invention discloses a kind of anti-static protective circuit and equipment, the circuit includes：Control circuit, on-off circuit and control chip, electrostatic induction situation by control chip according to Electrostatic Discharge Sensitive, send corresponding control signal, to cause the break-make of control circuit controlling switch circuit, and component in indicator light circuit is controlled to work when control chip receives corresponding detection signal.A kind of anti-static protective circuit disclosed in the embodiment of the present invention and equipment are cooperated by control chip, control circuit and on-off circuit; can be when detecting with harmfulness electrostatic; corresponding indicator light circuit is protected in time; relative to component antistatic effect in increase indicator light circuit; reach on the premise of equipment antistatic effect is improved, reduced cost of equipment maintenance, improve the stability and reliability of equipment operation.
Description
Technical field
The present embodiments relate to field of circuit technology, more particularly to a kind of anti-static protective circuit and equipment.
Background technology
Electrostatic is a kind of objective natural phenomena, and it causes an object to lose when being and being contacted with each other by two different objects
Some electric charges are removed, make its positively charged as electronics is transferred to another object, and another object obtains some excess electrons and band
Negative electricity.And if, electric charge, which will accumulate, makes electrostatic on object band during electric charge is difficult to during the separation.Therefore, electrostatic is due to
Object separates and caused after being contacted with other objects.
Although electrostatic is ubiquitous in daily life, when contacting, separate due to human body and other physics topic, can produce
It is raw several kilovolts, in addition the voltage of volt up to ten thousand, the danger that this high-tension feature can be fatal to some sensitive component generations
Evil.For example, the indicator light switch component of some equipment, is controlled using transistor more, and transistor is generally with relatively low
Breakdown voltage.When the switch of manual operation equipment, it is possible to electrostatic is produced due to man-machine contact, when the electrostatic is sent to
When on the circuit of Switching Power Supply plate, partial circuit instantaneous pressure is may result in, so as to puncture the switch element of sensitivity, is thereby resulted in
Equipment operation irregularity, or even damage.
In the prior art, generally by changing the breakdown characteristics of component, improvement electrostatic endangers to caused by equipment, but
It is that the high component worn of resisting can cause the sensitivity of itself to reduce, and would generally greatly improves the preparation cost of equipment.
The content of the invention
In view of this, the embodiments of the invention provide a kind of anti-static protective circuit and equipment, simple electricity can be passed through
Road can be on the basis of equipment cost not be increased
In a first aspect, the embodiments of the invention provide a kind of anti-static protective circuit, including：
Control circuit, the control signal input of the control circuit and the first control signal output electricity of control chip
Connection and output end electrically connect with the control terminal of on-off circuit, and the first control for being sent according to the control chip is believed
Number, the break-make of controlling switch circuit；
The on-off circuit, the power supply signal input of the on-off circuit electrically connects with dc source and signal is defeated
Go out end to electrically connect with the signal detection end of the control chip, for the control signal sent according to the control circuit, to control
Coremaking piece exports corresponding detection signal；And
The control chip, the control signal input of the control chip electrically connects with Electrostatic Discharge Sensitive, Yi Ji
Two control signal outputs electrically connect with the control signal input of indicator light circuit, for according to the Electrostatic Discharge Sensitive pair
The sensing situation of electrostatic, to the control signal of control circuit output first, and after the detection signal is received, send
Two control signals are to control in the indicator light circuit component to work.
Optionally, the protection circuit also includes：Isolation protective circuit, the power supply signal input of the isolation protective circuit
End electrically connects with the dc source, signal input part is electrically connected with the signal output part of the on-off circuit and signal is defeated
Go out end to electrically connect with the signal detection end of the control chip, for the electrostatic in isolation circuit, and the on-off circuit is defeated
The detection signal gone out is transferred to the control chip.
Optionally, the control circuit includes：First electric capacity, first resistor and second resistance；
The first end of first electric capacity electrically connects and second with the first control signal output of the control chip
End ground connection；
The first end of the second resistance is exported by the first resistor and the first control signal of the control chip
End electrical connection and the second end ground connection, the control terminal of the first end of the second resistance also with the on-off circuit electrically connect.
Optionally, the on-off circuit includes：3rd resistor, the 4th resistance, the second electric capacity and the first triode；
The control terminal of first triode electrically connects with the output end of the control circuit, first electrode passes through described
Three resistance are electrically connected with the dc source and second electrode ground connection；
The first end of 4th resistance electrically connected by the 3rd resistor with the dc source and the second end with
The signal input part electrical connection of the isolation protective circuit；
The first end of second electric capacity is electrically connected with the second end of the 4th resistance and the second end ground connection.
Optionally, first triode is NPN type triode.
Optionally, the isolation protective circuit includes：Phase inverter and the 3rd electric capacity；
The input of the phase inverter electrically connects with the signal output part of the on-off circuit, output end and the control core
The signal detection end electrical connection of piece and power supply signal input electrically connect with the dc source；
The first end of 3rd electric capacity is electrically connected with the dc source and the second end ground connection.
Second aspect, the embodiment of the present invention additionally provide a kind of equipment, including：Indicator light circuit and above-mentioned antistatic guarantor
Protection circuit.
Optionally, the indicator light circuit includes：First light-emitting component, the second light-emitting component, the second triode, the three or three
Pole pipe, the 5th resistance and the 6th resistance；
The first end of first light-emitting component electrically connected by the 5th resistance with dc source and the second end with
The first electrode electrical connection of second triode；
The control terminal of second triode and the second control signal of the control chip of the anti-static protective circuit are defeated
Go out end electrical connection and second electrode ground connection；
The first end of second light-emitting component is electrically connected and second by the 6th resistance with the dc source
End electrically connects with the first electrode of the 3rd triode；
The control terminal and the second control signal of the control chip of the anti-static protective circuit of 3rd triode are defeated
Go out end electrical connection and second electrode ground connection.
Optionally, second triode and/or the 3rd triode are NPN type triode.
Optionally, first light-emitting component and second light-emitting component are light emitting diode, and described first sends out
Optical element is different from the glow color of second light-emitting component.
A kind of anti-static protective circuit provided in an embodiment of the present invention and equipment, it is quick according to electrostatic by using control chip
The electrostatic induction situation of sensing unit, sends corresponding control signal, to cause the break-make of control circuit controlling switch circuit, and
Control chip controls the technological means that component works in indicator light circuit when receiving corresponding detection signal, solves electrostatic
The technical problem of indicator light circuit working condition is influenceed, can be when detecting with harmfulness electrostatic, protection is corresponding in time
Indicator light circuit, relative to component antistatic effect in increase indicator light circuit, reach and improved equipment antistatic effect
On the premise of, reduce the maintenance cost of equipment, improve the stability and reliability of equipment operation.
Brief description of the drawings
Fig. 1 is a kind of structural representation for anti-static protective circuit that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural representation for anti-static protective circuit that the embodiment of the present invention two provides；
Fig. 3 is a kind of physical circuit figure for anti-static protective circuit that the embodiment of the present invention three provides；
Fig. 4 is a kind of structured flowchart for equipment that the embodiment of the present invention four provides；
Fig. 5 is a kind of physical circuit figure of indicator light circuit provided in an embodiment of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.In the case where not conflicting, the present invention is real
Applying the feature in example and embodiment can be mutually combined.
Embodiment one
The anti-static protective circuit that the present embodiment provides goes for the sensitive first device of switch etc. in such as indicator light circuit
The application scenarios of part antistatic protection.Fig. 1 is a kind of structural representation for anti-static protective circuit that the embodiment of the present invention one provides
Figure.Shown in Figure 1, anti-static protective circuit 100 includes：Control circuit 10, on-off circuit 20 and control chip 30.Its
In, the control signal input of control circuit 10 electrically connects with the first control signal output of control chip 30, control circuit
10 output end electrically connects with the control terminal of on-off circuit 20, for the first control signal sent according to control chip 30
Con1, the break-make of controlling switch circuit 20；The power supply signal input of on-off circuit 20 electrically connects with dc source VCC, switch
The signal output part of circuit 20 electrically connects with the signal detection end of control chip 30, for the control sent according to control circuit 10
Signal, corresponding detection signal check1 is exported to control chip 30；And the control signal input of control chip 30 with it is quiet
Electric sensitive element 50 electrically connects, and the second control signal output of control chip 30 inputs with the control signal of indicator light circuit 40
End electrical connection, for according to sensing situation of the Electrostatic Discharge Sensitive 50 to electrostatic, the first control signal to be exported to control circuit 10
Con1, and after detection signal check1 is received, the second control signal con2 is sent to control first device in indicator light circuit 40
Part works.
Exemplary, electrostatic is ubiquitous in daily life, wherein, application of the electrostatic in industrial production is quite varied,
Such as electrostatic precipitation, electrostatic painting, electrostatic weaving etc..But electrostatic also has harmfulness, such as textile mills to a certain extent
The workshop of room, detonator and explosive etc. then needs to prevent to explode caused by electrostatic.In addition, it can be used in many electronic circuits
Some sensitive components, when being electrostatically-formed excessive voltage or electric current, then the work of Sensitive Apparatus can be influenceed, or even make it
Damage.Thus, by design anti-static protection circuit can prevent electrostatic produce after infringement to electronic component in circuit.
As shown in figure 1, anti-static protection circuit 100 provided in an embodiment of the present invention, it is quick to receive electrostatic by control chip 30
The electrostatic signal that sensing unit 50 transmits, and judge whether the electrostatic signal can produce harm to the electronic component in circuit, from
And send the first control signal con1 to control circuit 10；And control circuit 10 is then according to the first control signal controlling switch circuit
20 break-make, and then cause on-off circuit 20 to export corresponding detection signal check1, and the detection signal is inputted into control core
The detection signal input of piece 30.Now, the circuit that control chip 30 is protected according to detection signal check1 to it, such as refer to
Indication lamp circuit 40, the second control signal con2 is sent, so as to control each component work in the indicator light circuit 40.
Electrostatic induction situation of the embodiment of the present invention by using control chip according to Electrostatic Discharge Sensitive, send corresponding
Control signal, to cause the break-make of control circuit controlling switch circuit, and when control chip receives corresponding detection signal
The technological means that component works in indicator light circuit is controlled, the technology for solving electrostatic influence indicator light circuit working condition is asked
Topic, can protect corresponding indicator light circuit in time when detecting with harmfulness electrostatic, relative to increase indicator light circuit
Middle component antistatic effect, having reached on the premise of equipment antistatic effect is improved, reduces the maintenance cost of equipment, improves
The stability and reliability of equipment operation.
Embodiment two
The present embodiment adds isolation protective circuit on the basis of above-described embodiment, with the same of detection electrostatic signal
When, by each component and electrostatic isolation in the circuits such as claimed knowledge, so as to further realize fundamentally prevent it is quiet
Infringement of the electricity to component.Fig. 2 is a kind of structural representation for anti-static protection circuit that the embodiment of the present invention two provides.Such as figure
Shown in 2, anti-static protective circuit 100 includes：Control circuit 10, on-off circuit 20, isolation circuit 60 and control chip 30.
Wherein 10 control signal input of control circuit electrically connects with the first control signal output of control chip 30, control electricity
The output end on road 10 electrically connects with the control terminal of on-off circuit 20；The power supply signal input and dc source of on-off circuit 20
VCC is electrically connected, and the signal output part of on-off circuit 20 electrically connects with the signal input part of isolation protective circuit 60；Insulation blocking electricity
The power supply signal input on road 60 electrically connects with dc source VCC, the signal output part and control chip of isolation protective circuit 60
30 signal detection end electrical connection, for the electrostatic in isolation circuit, and the detection signal that on-off circuit 20 is exported is transferred to
Control chip 30；The control signal input of control chip 30 electrically connects with Electrostatic Discharge Sensitive 50, and the second of control chip 30
Control signal output electrically connects with the control signal input of indicator light circuit 40.
Exemplary, can not protected electronic component by static damage, it is necessary to by itself and electrostatic isolation.Such as Fig. 2
It is shown, isolation protective circuit 60 can be set in anti-static protective circuit, to enable isolation protective circuit 60 will be antistatic
The electrostatic signal that protection circuit 100 receives directly is isolated with claimed electronic component.For example, the anti-static protective circuit
When the Switching Power Supply plate circuit of 100 pairs of finance devices is protected, when manually waiting operation to cause electrostatic to produce, electrostatic can be used
Sensing element 50 detects electrostatic, and the Electrostatic Discharge Sensitive 50 for example can be electrostatic protection pipe.Electrostatic Discharge Sensitive 50 detects
After the presence of electrostatic, corresponding electrostatic induction signal is exported to control chip 30, so that control chip 30 is according to the electrostatic induction
Signal output the first control signal con1, first control signal con1 can control control of the control circuit 10 to on-off circuit 20
End processed exports corresponding control signal, the control signal can in controlling switch circuit 20 DC power signal VCC output；Through
After isolating electrostatic by isolation protective circuit 60 by the signal that on-off circuit 10 exports, the detection signal of control chip 30 is transferred to
Input, control chip 30 control the break-make of each electronic component in indicator light circuit 40 according to detection signal check1, so as to
Realize to by the antistatic infringement of protection circuit.
The embodiment of the present invention by increasing isolation protective circuit in anti-static protection circuit, with isolation by protection circuit with
Contact between electrostatic, electronic component is not by static damage in further protection circuit, and then improves the safe to use of equipment
Property, reduce the maintenance cost of equipment.
Embodiment three
The present embodiment is embodied on the basis of above-described embodiment, there is provided specific anti-static protection circuit
Circuit diagram.Fig. 3 is a kind of physical circuit figure for anti-static protection circuit that the embodiment of the present invention three provides.With reference to above-described embodiment
Fig. 2 and Fig. 3 shown in, the control circuit 10 in anti-static protection circuit 100 includes：First electric capacity C1, first resistor R1 and
Second resistance R2.Wherein, the first electric capacity C1 first end electrically connects with the first control signal output of control chip 30, and
First electric capacity C1 the second end ground connection；The first control that second resistance R2 first end passes through first resistor R1 and control chip 30
Signal output part electrically connect, and second resistance R2 the second end ground connection, and second resistance R2 first end also with on-off circuit
20 control terminal electrical connection.
Control circuit 10 receives the first control signal con1 that control chip 30 is sent, and is filtered by the first electric capacity C1
Ripple, then by being exported after first resistor R1 and second resistance R2 current limlitings and partial pressure to on-off circuit 20.Accordingly, on-off circuit 20 wraps
Include 3rd resistor R3, the 4th resistance R4, the second electric capacity C2 and the first triode Q1.Wherein, the first triode Q1 control terminal
Electrically connected with the output end of control circuit 10, the first triode Q1 first electrode passes through 3rd resistor R3 and dc source VCC
Electrical connection, and the first triode Q1 second electrode ground connection；4th resistance R4 first end passes through 3rd resistor R3 and direct current
Power supply VCC is electrically connected, and the 4th resistance R4 the second end electrically connects with the signal input part of isolation protective circuit 60；Second electric capacity C2
First end electrically connected with the 4th resistance R4 the second end, and the second electric capacity C2 the second end ground connection.
Second resistance R2 first end electrically connects with the control terminal of on-off circuit in control circuit 10, and in on-off circuit
One triode Q1 control terminal electrically connects with the output end of control circuit 10, it is therefore contemplated that the second electricity in control circuit 10
Resistance R2 first end electrically connects with the control terminal of the first triode Q1 in on-off circuit 20.When by the one or three in on-off circuit 10
When pole pipe Q1 is preferably NPN type triode, then need to make for the first triode Q1 control terminal i.e. base stage input high level signal
The first triode Q1 conductings are obtained, namely the first control signal con1 of the output of control chip 30 is the signal of high level, now, directly
After flowing power supply VCC by 3rd resistor R3 current limlitings, it is grounded by the first triode Q1 of conducting so that with isolation protective circuit 60
The signal output part of the on-off circuit 20 of signal input part electrical connection exports low level signal.
Optionally, with reference to shown in Fig. 2 and Fig. 3, isolation protective circuit 60 includes phase inverter U1 and the 3rd electric capacity C3.Its
In, phase inverter U1 input electrically connects with the signal output part of on-off circuit 20, phase inverter U1 output end and control chip
30 signal detection end electrical connection, and phase inverter U1 power supply signal input electrically connect with dc source VCC；3rd electric capacity
C3 first end electrically connects with dc source VCC, and the 3rd electric capacity C3 the second end ground connection.
With reference to the physical circuit figure of said switching circuit 20, it is known that the second of phase inverter U1 input and the 4th resistance R4
End electrical connection.Phase inverter is by dc source VCC powered operations, because electrostatic can produce certain interference, thus direct current to circuit
Circuit VCC need to be filtered through the 3rd electric capacity C3.As described above, when the first triode Q1 is turned on, the second of the 4th resistance R4
End output low level signal, now, the output end of phase inverter then exports opposite high level signal, as detection signal
Check1, to input to the detection signal input of control chip 30 so that control chip 30 is according to detection signal check1
The second control signal con2 is exported from its second control output end to indicator light circuit 40, and then controls electricity in indicator light circuit 40
The work of sub- component.It is considered that when detection signal check1 is high level, detecting has the electrostatic of harmfulness in circuit
Produce, control chip 30 sends the second control signal con2 of the protection component of indicator light circuit 20；And work as detection signal
When check1 is low level, the smaller work for being not enough to influence or damaging electronic component of electrostatic in circuit, control chip 30
Send the second control signal con2 for causing the normal work of indicator light circuit 20.
Antistatic protection electricity is explained further by the circuit diagram of specific anti-static protection circuit in the embodiment of the present invention
Road electrostatic protection principle, control chip are controlled by receiving the electrostatic signal of Electrostatic Discharge Sensitive to control circuit output first
Signal, after the control signal is via each electronic component in control circuit, send to on-off circuit, first in controlling switch circuit
The break-make of triode, to cause the electric signal that on-off circuit exports to isolate and handle backward control chip through isolation protective circuit
Corresponding detection signal is exported, so that control chip can control the work of component in indicator light circuit according to the detection signal
Make, so as to reach the security of each component operation in protection indicator light circuit, further reduce the maintenance cost of equipment.
Example IV
Fig. 4 is a kind of structured flowchart for equipment that the embodiment of the present invention four provides.The equipment for example can be a kind of finance
Equipment, as shown in figure 4, the equipment includes indicator light circuit 40 and any antistatic protection electricity provided in an embodiment of the present invention
Road.Wherein, the indicator light circuit 40 for example can be the switch indication light circuit of the rear maintenance screen of financial self-service equipment.
Optionally, Fig. 5 is a kind of physical circuit figure of indicator light circuit provided in an embodiment of the present invention.As shown in figure 5, refer to
Indication lamp circuit 40 includes：First light-emitting component D1, the second light-emitting component D2, the second triode Q2, the 3rd triode Q3, the 5th electricity
Hinder R5 and the 6th resistance R6.Wherein, the first light-emitting component D1 first end passes through the 5th resistance R5 and dc source VCC electricity
Connection, the first light-emitting component D1 the second end electrically connects with the second triode Q2 first electrode；Second triode Q2 control
End electrically connects with the control signal output of the control chip of anti-static protective circuit 100, and second the second electricity of triode Q2
Pole is grounded；Second light-emitting component D2 first end is electrically connected by the 6th resistance R6 with dc source VCC, the second light-emitting component D2
The second end electrically connected with the 3rd triode Q3 first electrode；3rd triode Q3 control terminal and anti-static protective circuit
The second control signal output electrical connection of 100 control chip, and the 3rd triode Q3 second electrode ground connection.
Control chip is according to the detected detection signal related to electrostatic signal, hair in anti-static protective circuit 100
Go out corresponding second control signal con2, and second control signal con2 is inputted to the second triode of indicator light circuit 40
Q2 and the 3rd triode Q3, i.e. the second control signal con2 include the second control signal con21 and the second control signal con22,
Control the second triode Q2 and the 3rd triode Q3 break-make respectively by the second control signal con21 and con22.If by second
Triode Q2 is preferably NPN type triode, when the second control signal con21 is high level signal, the second triode Q2 conductings, the
Two light emitting D1 lights, and/or the 3rd triode Q3 is preferably NPN type triode, and the second control signal con22 is high level
During signal, the 3rd triode Q3 conductings, the second light-emitting component D2 lights.
Optionally, the first light-emitting component D1 and the second light-emitting component D2 is light emitting diode, and the first light-emitting component D1
It is different from the second light-emitting component D2 glow color.
By the way that two light emitting diodes are arranged into different glow colors, to judge the current working condition of equipment.Example
Such as, the first light-emitting component D1 light emitting diode green light, this can represent that equipment is in normal stand-by operation state；Second hair
Optical element D2 light emitting diode feux rouges, this can represent equipment operation irregularity, or the non-working condition of equipment.Accordingly, the second control
Signal con21 and con22 processed controls two lumination of light emitting diode respectively, only when light emitting diode D1 normal luminous,
It is believed that the indicator light circuit normal work, equipment safety.
It should be noted that on the basis of such scheme, those skilled in the art are it is conceivable that by the second light-emitting component
Light as mark electric in indicator light circuit normal work and equipment safety.
The embodiment of the present invention for equipment by setting corresponding anti-static protective circuit, to protect first device in indicator light circuit
Part trouble free service, so as to which the stability for equipment operation and reliability provide precondition, the maintenance of further reduction equipment into
This.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
- A kind of 1. anti-static protective circuit, it is characterised in that including：Control circuit, the control signal input of the control circuit and the first control signal output of control chip are electrically connected Connect and output end electrically connects with the control terminal of on-off circuit, for the first control signal sent according to the control chip, The break-make of controlling switch circuit；The on-off circuit, the power supply signal input of the on-off circuit is electrically connected with dc source and signal output part Electrically connected with the signal detection end of the control chip, for the control signal sent according to the control circuit, to control core Piece exports corresponding detection signal；AndThe control chip, the control signal input of the control chip is electrically connected with Electrostatic Discharge Sensitive and the second control Signal output part processed electrically connects with the control signal input of indicator light circuit, for according to the Electrostatic Discharge Sensitive to electrostatic Sensing situation, to the control signal of control circuit output first, and after the detection signal is received, send the second control Signal processed is to control in the indicator light circuit component to work.
- 2. protection circuit according to claim 1, it is characterised in that also include：Isolation protective circuit, the power supply signal input of the isolation protective circuit electrically connects with the dc source, signal is defeated Enter end to electrically connect with the signal output part of the on-off circuit and the signal detection end of signal output part and the control chip Electrical connection, for the electrostatic in isolation circuit, and the detection signal that the on-off circuit is exported is transferred to the control chip.
- 3. protection circuit according to claim 2, it is characterised in that the control circuit includes：First electric capacity, the first electricity Resistance and second resistance；The first end of first electric capacity is electrically connected with the first control signal output of the control chip and the second termination Ground；The first end of the second resistance passes through the first resistor and the first control signal output of control chip electricity Connection and the second end ground connection, the control terminal of the first end of the second resistance also with the on-off circuit electrically connect.
- 4. protection circuit according to claim 2, it is characterised in that the on-off circuit includes：3rd resistor, the 4th electricity Resistance, the second electric capacity and the first triode；The control terminal of first triode electrically connects with the output end of the control circuit, first electrode passes through the described 3rd electricity Resistance is electrically connected with the dc source and second electrode ground connection；The first end of 4th resistance electrically connected by the 3rd resistor with the dc source and the second end with it is described The signal input part electrical connection of isolation protective circuit；The first end of second electric capacity is electrically connected with the second end of the 4th resistance and the second end ground connection.
- 5. protection circuit according to claim 4, it is characterised in that first triode is NPN type triode.
- 6. protection circuit according to claim 2, it is characterised in that the isolation protective circuit includes：Phase inverter and 3rd electric capacity；The input of the phase inverter electrically connects with the signal output part of the on-off circuit, output end and the control chip Signal detection end electrically connects and power supply signal input electrically connects with the dc source；The first end of 3rd electric capacity is electrically connected with the dc source and the second end ground connection.
- 7. a kind of equipment, it is characterised in that including the antistatic guarantor described in indicator light circuit and any one of claim 1~6 Protection circuit.
- 8. the equipment according to right wants 7, it is characterised in that the indicator light circuit includes：First light-emitting component, the second hair Optical element, the second triode, the 3rd triode, the 5th resistance and the 6th resistance；The first end of first light-emitting component electrically connected by the 5th resistance with dc source and the second end with it is described The first electrode electrical connection of second triode；The control terminal of second triode and the second control signal output of the control chip of the anti-static protective circuit Electrical connection and second electrode ground connection；The first end of second light-emitting component electrically connected by the 6th resistance with the dc source and the second end with The first electrode electrical connection of 3rd triode；The control terminal of 3rd triode and the second control signal output of the control chip of the anti-static protective circuit Electrical connection and second electrode ground connection.
- 9. equipment according to claim 8, it is characterised in that second triode and/or the 3rd triode are NPN type Triode.
- 10. equipment according to claim 8, it is characterised in that first light-emitting component and second light-emitting component It is light emitting diode, and first light-emitting component is different from the glow color of second light-emitting component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710750648.4A CN107453343B (en) | 2017-08-28 | 2017-08-28 | A kind of anti-static protective circuit and finance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710750648.4A CN107453343B (en) | 2017-08-28 | 2017-08-28 | A kind of anti-static protective circuit and finance device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107453343A true CN107453343A (en) | 2017-12-08 |
| CN107453343B CN107453343B (en) | 2019-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710750648.4A Expired - Fee Related CN107453343B (en) | 2017-08-28 | 2017-08-28 | A kind of anti-static protective circuit and finance device |
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| CN (1) | CN107453343B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233612A (en) * | 2020-10-28 | 2021-01-15 | 福建捷联电子有限公司 | Automatic judgment device for LED display screen receiving card |
| CN114498596A (en) * | 2022-03-29 | 2022-05-13 | 武汉市聚芯微电子有限责任公司 | Electrostatic protection circuit, electrostatic protection method and integrated circuit |
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| CN104753055A (en) * | 2015-04-17 | 2015-07-01 | 上海华虹宏力半导体制造有限公司 | Electrostatic discharge protection circuit |
| CN105895629A (en) * | 2015-02-12 | 2016-08-24 | 台湾积体电路制造股份有限公司 | ESD protection system utilizing gate-floating scheme and control circuit thereof |
| CN106099892A (en) * | 2016-08-12 | 2016-11-09 | 京东方科技集团股份有限公司 | Static release protection circuit and comprise its array base palte, display device |
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2017
- 2017-08-28 CN CN201710750648.4A patent/CN107453343B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895629A (en) * | 2015-02-12 | 2016-08-24 | 台湾积体电路制造股份有限公司 | ESD protection system utilizing gate-floating scheme and control circuit thereof |
| US20170098935A1 (en) * | 2015-02-12 | 2017-04-06 | Taiwan Semiconductor Manufacturing Company Limited | ESD Protection System Utilizing Gate-Floating Scheme and Control Circuit Thereof |
| CN104753055A (en) * | 2015-04-17 | 2015-07-01 | 上海华虹宏力半导体制造有限公司 | Electrostatic discharge protection circuit |
| CN106099892A (en) * | 2016-08-12 | 2016-11-09 | 京东方科技集团股份有限公司 | Static release protection circuit and comprise its array base palte, display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233612A (en) * | 2020-10-28 | 2021-01-15 | 福建捷联电子有限公司 | Automatic judgment device for LED display screen receiving card |
| CN114498596A (en) * | 2022-03-29 | 2022-05-13 | 武汉市聚芯微电子有限责任公司 | Electrostatic protection circuit, electrostatic protection method and integrated circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107453343B (en) | 2019-06-07 |
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