CN109330548A - The red white light source control switching circuit of endoscopic visualization - Google Patents
The red white light source control switching circuit of endoscopic visualization Download PDFInfo
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- CN109330548A CN109330548A CN201811282355.9A CN201811282355A CN109330548A CN 109330548 A CN109330548 A CN 109330548A CN 201811282355 A CN201811282355 A CN 201811282355A CN 109330548 A CN109330548 A CN 109330548A
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- 238000012800 visualization Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 44
- 230000005611 electricity Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 abstract description 10
- 239000004020 conductor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002627 tracheal intubation Methods 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 230000004382 visual function Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0638—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements providing two or more wavelengths
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Abstract
The invention discloses a kind of red white light source control switching circuits of endoscopic visualization, including power supply, switch method of remote signal circuit, power supply reverse control circuit and light fixture;After switch method of remote signal circuit receives input signal, level conversion order is issued to power supply reverse control circuit;Overturning output circuit tool, there are two power supply output driving interface, respectively power supply output driving interface LED_P1 and power supply output driving interface LED_P2, after power supply reverse control circuit receives level conversion order, overturn the positive-negative polarity of out-put supply;Light fixture includes Light-emitting diode LED 1 and Light-emitting diode LED 2, and one is red light emitting diodes in Light-emitting diode LED 1 and Light-emitting diode LED 2, another is white light-emitting diode.Red white two light emitting source is set in the control circuit, is able to achieve to red white hair light source switching control, that is, is combined the functional characteristics of existing endoscope and optical wand, meet use demand well.
Description
Technical field
The present invention relates to a kind of red white light source control switching circuits of endoscopic visualization, belong to endoscope circuit structure design neck
Domain.
Background technique
It has all been popularized in many hospitals at present and has carried out auxiliary tracheae using the endoscopic apparatus such as visual hard tube mirror, visual soft lens
Intubation shoots wall image in person's windpipe by the camera of endoscope mirror tube front end, is transferred to endoscope display end by liquid crystal
Display screen shows image.Camera is light and handy, very thin, nimble, has flexible tracing ability, preferably the property be inserted into, and enters
Cavum laryngis more can be close to diseased region, and the variation subtle to throat and pipe can be high-visible, and diagnosis and treatment are more rapidly and more quasi-
Really, but bad so intuitive that judge to the depth location for entering person's windpipe, sometimes intubation encounters spittoon or blood
Image is not seen when liquid, so doctor can sometimes use this hard tube that can issue red light of optical wand and come in substitute visual
Sight glass is for guiding positioning, because the penetration capacity of red light is strong, and trachea cannula position is close to thoracic cavity, and feux rouges penetrates readily through chest
Chamber and go out, but the disadvantage is that this optical wand without visual function, can position and can not but see internal image, using effect one
As.
Summary of the invention
In this regard, the present invention is intended to provide a kind of red white light source control switching circuit of the reasonable endoscopic visualization of combination, the control
Red white two light emitting source is set in circuit processed, is able to achieve to red white hair light source switching control, that is, combines existing endoscope and optical wand
Functional characteristics, meet use demand.
Realizing the technical solution of the object of the invention is:
A kind of red white light source control switching circuit of endoscopic visualization, including the overturning of power supply, switch method of remote signal circuit, power supply
Control circuit and light fixture;The switch method of remote signal circuit, power supply reverse control circuit and light fixture are sequentially connected, institute
Stating power supply is that switch method of remote signal circuit and power supply reverse control circuit directly provide electric energy, provides electricity indirectly for light fixture
Energy;After the switch method of remote signal circuit receives input signal, level conversion life is issued to the power supply reverse control circuit
It enables;Output circuit tool is overturn there are two power supply output driving interface, respectively power supply output driving interface LED_P1 and power supply is defeated
Driving interface LED_P2 out after power supply reverse control circuit receives level conversion order, overturns the positive-negative polarity of out-put supply;
The light fixture includes Light-emitting diode LED 1 and Light-emitting diode LED 2, Light-emitting diode LED 1 and Light-emitting diode LED 2
In one be red light emitting diodes, another is white light-emitting diode, the anode and light-emitting diodes of Light-emitting diode LED 1
The cathode of pipe LED2 is connected and is connected with power supply output driving interface LED_P1, the cathode and light-emitting diodes of Light-emitting diode LED 1
The anode of pipe LED2 is connected and is connected with power supply output driving interface LED_P2.
In above-mentioned technical proposal, the switch method of remote signal circuit includes p-type triode Q1,1 foot of p-type triode Q1 with
2 feet of resistance R1 are connected with 1 foot of resistance R4, and 2 feet of p-type triode Q1 connect VCC power supply, the 3 feet connection of p-type triode Q1
1 foot and output switch enable signal EN1 of resistance R8;1 foot of resistance R1 is connected with VCC power supply;3 feet of N-type triode Q4
It is connected with 2 feet of resistance R4,1 foot of resistance R7, output switch enable signal EN2, the 1 of 1 foot of N-type triode Q4 and resistance R8
Foot, 1 foot of resistance R11, one end of capacitor C2 and the one end touch key K1 are connected, the 2 feet ground connection of N-type triode Q4;Resistance
1 foot of 2 feet of R11, the other end of capacitor C2 and capacitor C1 is grounded, 2 feet of capacitor C1 and 2 feet of resistance R7 and touch key
The K1 other end is connected.
In above-mentioned technical proposal, the power supply reverse control circuit includes p-type triode Q3 and p-type triode Q2, p-type three
2 feet of pole pipe Q3 and 2 feet of p-type triode Q2 are all connected with VCC power supply, one end of 1 foot of p-type triode Q3 and resistance R2,
One end of resistance R5 and one end of capacitor C5 are connected, and the other end of resistance R5 and switch, which make to can control signal EN1, to be connected, p-type
3 feet of triode Q3 are connected with one end of one end of resistance R9 and resistance R13;1 foot of p-type triode Q2 and the one of resistance R3
The one end at end, one end of resistance R6 and capacitor C6 is connected, and the other end of resistance R2 connects VCC electricity with the other end of resistance R3
Source, the other end of resistance R6 and switch, which make to can control signal EN2, to be connected, 3 feet of p-type triode Q2 and one end of resistance R10 and
One end of resistance R12 is connected, the capacitor C5 other end and capacitor C6 other end ground connection;1 foot of N-type triode Q5 is with resistance R12's
The other end is connected, 2 feet of N-type triode Q5 ground connection, and the one of the other end of 3 feet of N-type triode Q5 and resistance R9, capacitor C3
End, one end of diode D1 and power supply output driving interface LED_P1 are connected;1 foot of N-type triode Q6 and resistance R13's is another
One end is connected, 2 feet of N-type triode Q6 ground connection, the other end of 3 feet of N-type triode Q6 and resistance R10, capacitor C4 one end,
One end of diode D3 and power supply output driving interface LED_P2 are connected, the other end of diode D1, diode D3 it is another
End, the other end of capacitor C3, capacitor C4 the other end be grounded.
The present invention has the effect of positive: using the scheme in the present invention, being arranged red white two in the mirror tube front end of endoscope
A LED light source (red LED lamp and white led lamps), and through the invention in red white light source control switching circuit alternately shine,
I.e. the present invention combines the characteristics of endoscopic visualization and optical wand, in conjunction with the strong point of the two, is combined into one done design, mainly with can
Function depending on optical wand is added on the basis of based on endoscope, does not change the structure of former endoscopic visualization, originally internal substantially
In the limited situation of conductor wire that structure space is compact and is used to connect, this red white light source control switching circuit has been invented,
The light source of two types instrument is set to be integrated into one, during actual use it is red or white to can according to need selection control
LED shines, and the control circuit does not control chip, does not need programming code, and control panel can be accomplished very small, solves
Installation space compactness issue.
Detailed description of the invention
Fig. 1 is block diagram of the invention;
Fig. 2 is the circuit diagram of switch method of remote signal circuit in the present invention;
Fig. 3 is the circuit diagram of electric energy reverse control circuit in the present invention;
Fig. 4 is the circuit diagram of power supply module in the present invention.
Specific embodiment
With reference to the accompanying drawings of the specification to the specific structure of the red white light source control switching circuit of endoscopic visualization in the present invention
It does to illustrate:
A kind of red white light source control switching circuit of endoscopic visualization, referring to shown in Fig. 1 and Fig. 4 comprising power supply 1, signal
Control switching circuit 2, power supply reverse control circuit 3 and light fixture 4;The switch method of remote signal circuit 2, power supply overturning control
Circuit 3 and light fixture 4 are sequentially connected, and the power supply 1 is that switch method of remote signal circuit 2 and power supply reverse control circuit 3 are direct
Electric energy is provided, provides electric energy indirectly for light fixture 4;The switch method of remote signal circuit connect 2 receive input signal after, to described
Power supply reverse control circuit 3 issues level conversion order;Overturning the tool of output circuit 3, there are two power supply output driving interfaces, respectively
For power supply output driving interface LED_P1 and power supply output driving interface LED_P2, power supply reverse control circuit 3 receives level
After conversion command, the positive-negative polarity of two power supply output driving interface out-put supplies is overturn;The light fixture 4 includes luminous two
One is two pole of emitting red light in pole pipe LED1 and Light-emitting diode LED 2, Light-emitting diode LED 1 and Light-emitting diode LED 2
Pipe, another is white light-emitting diode, the anode of Light-emitting diode LED 1 be connected with the cathode of Light-emitting diode LED 2 and with
Power supply output driving interface LED_P1 be connected, the cathode of Light-emitting diode LED 1 be connected with the anode of Light-emitting diode LED 2 and with
Power supply output driving interface LED_P2 is connected.Using the scheme in the present invention, by the way that red white two LED lights are arranged in mirror tube front end
Source (red LED lamp and white led lamps), and through the invention in red white light source control switching circuit alternately shine, i.e. this hair
The characteristics of bright combination endoscopic visualization and optical wand, is combined into one done design, mainly with visible endoscopic in conjunction with the strong point of the two
The function of optical wand is added on the basis of based on mirror, does not change the structure of former endoscopic visualization substantially, in originally internal structure sky
Between it is compact and be used for connect the limited situation of conductor wire under, invented this red white light source control switching circuit, made two kinds
The light source of type instrument can be integrated into one, during actual use can according to need selection control red or White LED hair
Light, and the control circuit does not control chip, does not need programming code, and control panel can be accomplished very small, solves installation
Spaces compact problem.
Further, referring to shown in Fig. 2, the switch method of remote signal circuit 2 includes p-type triode Q1, p-type triode Q1's
1 foot is connected with 1 foot of 2 feet of resistance R1 and resistance R4, the 2 feet connection VCC power supply of p-type triode Q1, and the 3 of p-type triode Q1
Foot connects 1 foot and output switch enable signal EN1 of resistance R8;1 foot of resistance R1 is connected with VCC power supply;N-type triode Q4
3 feet and 2 feet of resistance R4, resistance R7 1 foot, output switch enable signal EN2 be connected, 1 foot and resistance of N-type triode Q4
1 foot of R8,1 foot of resistance R11, one end of capacitor C2 and the one end touch key K1 are connected, the 2 feet ground connection of N-type triode Q4;
1 foot of 2 feet of resistance R11, the other end of capacitor C2 and capacitor C1 is grounded, and 2 feet of capacitor C1 and 2 feet of resistance R7 and is touched
The key K1 other end is connected.
Further, shown in referring to Fig. 3, the power supply reverse control circuit 3 in the present embodiment includes p-type triode Q3
With p-type triode Q2,2 feet of p-type triode Q3 and 2 feet of p-type triode Q2 are all connected with VCC power supply, p-type triode Q3's
1 foot is connected with one end of one end of resistance R2, one end of resistance R5 and capacitor C5, the enabled control of the other end and switch of resistance R5
Signal EN1 processed is connected, and 3 feet of p-type triode Q3 are connected with one end of one end of resistance R9 and resistance R13;P-type triode Q2's
1 foot is connected with one end of one end of resistance R3, one end of resistance R6 and capacitor C6, and the other end of resistance R2 and resistance R3's is another
One end connects VCC power supply, and the other end of resistance R6 and switch, which make to can control signal EN2, to be connected, 3 feet of p-type triode Q2 with it is electric
One end of resistance R10 is connected with one end of resistance R12, the capacitor C5 other end and capacitor C6 other end ground connection;The 1 of N-type triode Q5
Foot is connected with the other end of resistance R12,2 feet of N-type triode Q5 ground connection, and 3 feet of N-type triode Q5 are another with resistance R9's
End, one end of capacitor C3, one end of diode D1 and power supply output driving interface LED_P1 are connected;1 foot of N-type triode Q6
It is connected with the other end of resistance R13,2 feet of N-type triode Q6 ground connection, the other end of 3 feet of N-type triode Q6 and resistance R10,
One end of capacitor C4, one end of diode D3 and power supply output driving interface LED_P2 are connected, the other end of diode D1, two
The other end of pole pipe D3, the other end of capacitor C3, capacitor C4 the other end be grounded.The switch method of remote signal circuit includes P
1 foot of type triode Q1, p-type triode Q1 are connected with resistance R1 and resistance R4, and 2 feet of triode Q1 connect VCC power supply, three poles
The 3 feet connection resistance R8 and output switch enable signal EN1 of pipe Q1;1 foot of resistance R1 is connected with VCC power supply;N-type triode
3 feet of Q4 are connected with resistance R4, resistance R7, output switch enable signal EN2,1 foot and resistance R8, resistance of N-type triode Q4
R11, capacitor C2 and touch key K1 are connected, the 2 feet ground connection of N-type triode Q4;Resistance R11, capacitor C2 and capacitor C1's
One foot ground connection, another foot of capacitor C1 are connected with resistance R7 with touch key K1 respectively.
The working principle of red white light source control circuit is following (with Light-emitting diode LED 1 for emitting red light two in the present embodiment
Pole pipe, Light-emitting diode LED 2 be white diode for be illustrated):
When VCC power supply electrifying, the base stage high level of p-type triode Q1, p-type triode Q1 cut-off;P-type triode Q1's
Collector makes have enough pressure differences between VCC and EN1 by resistance R8 and resistance R11 with pulling down to, and p-type triode Q3 is allowed to lead
It is logical;Capacitor C1 is started to charge, until fully charged;Configure resistance R2 and resistance R5, the resistance value proportion of resistance R8 and resistance R11,
The base stage of N-type triode Q4 is set to maintain 0.6V hereinafter, then N-type triode Q4 ends, EN2 is high level, and p-type triode Q2 is cut
Only;Because p-type triode Q3 is connected, so that the base stage of N-type triode forms electric current, so that N-type triode Q6 is connected;And because
P-type triode Q2 cut-off, N-type triode Q6 conducting, so that the base stage of N-type triode Q5 pulls down to ground, thus N-type triode Q5
Cut-off;So far, from VCC power supply by p-type triode Q3 the pole EC to resistance R9 using conductor wire LED_P1 to LED2, back
Ground is arrived again using conductor wire LED_P2 to N-type triode Q6, forms a circuit, at this point, Light-emitting diode LED 2 is connected, hair
Optical diode LED1 cut-off.So Light-emitting diode LED 2 is in the open state after booting, Light-emitting diode LED 1, which is in, is closed
State.
After touch key K1 is pressed, capacitor C1 capacitor discharges to N-type triode Q4, N-type triode Q4 conducting, N
P-type triode Q1 base voltage declines after type triode Q4 conducting, and p-type triode Q1 is also and then connected, p-type triode Q1 conducting
Afterwards, EN1 level is approximately equal to VCC supply voltage, so p-type triode Q3 ends;After N-type triode Q4 conducting, EN2 level is dragged down
To ground, so that p-type triode Q2 be made to be connected;After p-type triode Q2Q2 conducting and Q3 cut-off, corresponding Q5 conducting, Q6 cut-off,
Q2 and R10 is passed through again to LED_P2 from VCC power supply in the circuit of circuit, is returned after LED_P1 reaches Q5 after LED1 and arrives ground,
To form a circuit opposite with before pressing touch key K1.At this point, Light-emitting diode LED 1 is connected, light emitting diode
LED2 cut-off, so Light-emitting diode LED 1 is in the open state, Light-emitting diode LED 2 is in close state, so far from booting
To after by touch key next time, the illuminating source of endoscopic visualization has been switched from white to red, and viewer is also from simple
Visible system has entered the mode that visible system adds optical wand.In addition, during circuit is alternate, since VCC power supply passes through
Q3 passes through time for discharge using Q5 of R6 to the capacitor C5 charging time fast C6 that crosses, thus the cut-off of Q3 can the conducting than Q2 come
Fastly, to prevent by Q2, Q3, Q5, the H-bridge circuit of Q6 composition Q3 occurs and turn off Q2 just not yet in positive and negative alternation procedure moment
Conducting, so that forming the phenomenon that triode is burnt in the unilateral short circuit of H-bridge circuit.Certainly, resistance R9 and resistance R10 here is at this
In play a part of to limit LED current, while also having certain metering function to the unilateral conducting of H-bridge circuit.
After touch key K1 is pressed again, since C1 is discharged, electricity 0, level is equal to ground, so Q4 cut-off is closed
It is disconnected;Resistance R1 is matched, the ratio of R4 and R7 make the base stage of p-type triode Q1 be approximately equal to VCC supply voltage, Q1 cut-off;EN1
Level drags down, and EN2 level is drawn high;The speed of the C5 electric discharge of p-type triode Q3 base stage charges with the C6 of p-type triode Q2 base stage slowly
Speed, so switch OFF fastly with switch open, circuit re-enter into booting first power on when as mode.Extremely
This, from VCC power supply by the pole EC of Q3 to R9 using conductor wire LED_P1, Light-emitting diode LED 2 is arrived, back using leading
Electric wire LED_P2 to Q6 arrives ground again, forms a circuit, at this point, Light-emitting diode LED 2 is connected, LED1 cut-off.So after booting
Light-emitting diode LED 2 is in the open state, and Light-emitting diode LED 1 is in close state.Entire circuit is by by once touching
Key K1 switches primary source, and the circulation of primary source is completed by touch key K1 twice, and so on, realize entire design mesh
's.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And these
Belong to the obvious changes or variations that connotation of the invention is extended out and still falls within protection scope of the present invention.
Claims (3)
1. a kind of red white light source control switching circuit of endoscopic visualization, which is characterized in that including power supply (1), switch method of remote signal
Circuit (2), power supply reverse control circuit (3) and light fixture (4);The switch method of remote signal circuit (2), power supply overturning control
Circuit (3) and light fixture (4) are sequentially connected, and the power supply (1) is switch method of remote signal circuit (2) and power supply overturning control electricity
Road (3) directly provides electric energy, provides electric energy indirectly for light fixture (4);The switch method of remote signal circuit connects (2) and receives input
After signal, level conversion order is issued to the power supply reverse control circuit (3);Overturning output circuit (3) tool, there are two power supplys
Output driving interface, respectively power supply output driving interface LED_P1 and power supply output driving interface LED_P2, power supply overturning control
After circuit (3) processed receives level conversion order, the positive-negative polarity of two power supply output driving interface out-put supplies is overturn;It is described
Light fixture (4) includes Light-emitting diode LED 1 and Light-emitting diode LED 2, Light-emitting diode LED 1 and Light-emitting diode LED 2
In one be red light emitting diodes, another is white light-emitting diode, the anode and light-emitting diodes of Light-emitting diode LED 1
The cathode of pipe LED2 is connected and is connected with power supply output driving interface LED_P1, the cathode and light-emitting diodes of Light-emitting diode LED 1
The anode of pipe LED2 is connected and is connected with power supply output driving interface LED_P2.
2. the red white light source control switching circuit of endoscopic visualization according to claim 1, which is characterized in that the signal is cut
Changing control circuit (2) includes p-type triode Q1, and 1 foot of p-type triode Q1 is connected with 1 foot of 2 feet of resistance R1 and resistance R4, P
2 feet of type triode Q1 connect VCC power supply, 1 foot and the enabled letter of output switch of the 3 feet connection resistance R8 of p-type triode Q1
Number EN1;1 foot of resistance R1 is connected with VCC power supply;3 feet and 2 feet of resistance R4 of N-type triode Q4,1 foot of resistance R7, output
Enable signal EN2 is switched to be connected, 1 foot and 1 foot of resistance R8 of N-type triode Q4,1 foot of resistance R11, capacitor C2 one end with
And the one end touch key K1 is connected, the 2 feet ground connection of N-type triode Q4;The other end and capacitor of 2 feet of resistance R11, capacitor C2
1 foot of C1 is grounded, and 2 feet of capacitor C1 are connected with 2 feet of resistance R7 and the touch key K1 other end.
3. the red white light source control switching circuit of endoscopic visualization according to claim 2, which is characterized in that the power supply turns over
Turning control circuit (3) includes p-type triode Q3 and p-type triode Q2,2 feet of p-type triode Q3 and 2 feet of p-type triode Q2
All it is connected with VCC power supply, 1 foot and one end phase of one end of resistance R2, one end of resistance R5 and capacitor C5 of p-type triode Q3
Even, the other end of resistance R5 and switch, which make to can control signal EN1, is connected, 3 feet of p-type triode Q3 and one end of resistance R9 and electricity
The one end for hindering R13 is connected;One end phase of 1 foot of p-type triode Q2 and one end of resistance R3, one end of resistance R6 and capacitor C6
Even, the other end of resistance R2 connects VCC power supply with the other end of resistance R3, and the other end and switch of resistance R6 makes to can control signal
EN2 is connected, and 3 feet of p-type triode Q2 are connected with one end of one end of resistance R10 and resistance R12, the capacitor C5 other end and capacitor
C6 other end ground connection;1 foot of N-type triode Q5 is connected with the other end of resistance R12, the 2 feet ground connection of N-type triode Q5, N-type three
3 feet and the other end of resistance R9, one end of capacitor C3, one end of diode D1 and power supply output driving interface of pole pipe Q5
LED_P1 is connected;1 foot of N-type triode Q6 is connected with the other end of resistance R13, the 2 feet ground connection of N-type triode Q6, three pole of N-type
3 feet and the other end of resistance R10, one end of capacitor C4, one end of diode D3 and power supply output driving interface of pipe Q6
LED_P2 is connected, and the other end of diode D1, the other end of diode D3, the other end of capacitor C3, the other end of capacitor C4 are equal
Ground connection.
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CN206517632U (en) * | 2016-12-16 | 2017-09-22 | 珠海市诚立信电子科技有限公司 | A kind of battery case controller of control lamp string |
CN207837516U (en) * | 2017-06-02 | 2018-09-11 | 儋州市人民医院 | A kind of electronics Bronchofiberscope with double light sources |
CN207039977U (en) * | 2017-07-20 | 2018-02-23 | 无锡英斯特微电子有限公司 | The control circuit of one key switching seven-color LED lamp effect |
CN210009001U (en) * | 2018-10-31 | 2020-02-04 | 浙江优亿医疗器械有限公司 | Visible endoscope red and white light source switching control circuit |
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