CN208489795U - A kind of adjustable constant-flow source adapter and microscope - Google Patents
A kind of adjustable constant-flow source adapter and microscope Download PDFInfo
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- CN208489795U CN208489795U CN201820869909.4U CN201820869909U CN208489795U CN 208489795 U CN208489795 U CN 208489795U CN 201820869909 U CN201820869909 U CN 201820869909U CN 208489795 U CN208489795 U CN 208489795U
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- adjustable constant
- flow source
- source adapter
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Abstract
The utility model discloses a kind of adjustable constant-flow source adapters, comprising: battery is used for output voltage；The output end of booster circuit, booster circuit and battery connects, and booster circuit is that the output voltage of battery boosts；Adjustable constant-flow circuit, for making the electric current constant current of output, adjustable constant-flow circuit includes reference voltage circuit, output matrix current adjustment circuit and constant-current circuit.The invention also discloses a kind of microscopes, a kind of adjustable constant-flow source adapter and microscope of the utility model, by increasing battery in adjustable constant flow source circuit, cooperation booster circuit makes adjustable constant-flow source adapter when not having external direct current power supply, also constant current can be provided to LED light source by included battery, meet in the case where no external direct current power supply the use demand facilitated under its outdoor research conditions to the use of LED light source.
Description
Technical field
The utility model relates to constant-current source circuit field more particularly to a kind of adjustable constant-flow source adapters and microscope.
Background technique
Constant-current source neither provides the power supply of constant current with load change in resistance, for load, drives in robot, LED
Dynamic, power communication etc. has wide application.
Currently, light emitting diode (LED light, Light Emitting Diode) is in lighting area with its environmental protection, service life
Length, is free of the advantages such as noxious material at photoelectric efficiency height, good illumination effect, is widely used in various light scenes.
Conventional microscope mostly provides illumination using metalized lamp, and Novel LED light source, which largely compensates for traditional mercury lamp, to be existed
Deficiency, as service life is short, big power consumption, fever, using it is complicated, expensive the problems such as, greatly reduce microscopical
Use cost improves fluorescence microscope ease-to-operate.Existing LED light source mainly passes through constant current source adapter external power supply
Work is driven, constant current source adapter provides the power supply of constant current by connection power supply for LED light source.And with outdoor research
Demand increases, more and more in the microscopical frequency of outdoor application, but in fact, the LED light source as microscope illumination is outer
It is inconvenient to connect alternating current work, and working efficiency is lower.For being not to be available in the case where some offers without power supply
LED light source auxiliary microscope carries out research observation.
Utility model content
It for overcome the deficiencies in the prior art, can the purpose of this utility model is that a kind of adjustable constant-flow source adapter
The power supply of constant current is provided for microscope auxiliary LED light source, facilitates the use demand under outdoor research conditions.
One of the purpose of this utility model adopts the following technical scheme that realization:
A kind of adjustable constant-flow source adapter, comprising: battery is used for output voltage；Booster circuit, the booster circuit and institute
The output end connection of battery is stated, the booster circuit is that the output voltage of the battery boosts；Adjustable constant-flow circuit, it is defeated for making
Electric current out is constant current, and the adjustable constant-flow circuit includes reference voltage circuit, output matrix current adjustment circuit and Constant Electric Current
Road.
Further, the DC voltage of the battery output 3.7V-4.2V.
Further, the booster circuit includes voltage-stablizer.
Further, the voltage-stablizer exports 5V pressure stabilizing.
Further, the voltage-stablizer is ME2109 series booster type voltage-stablizer.
Further, the reference voltage circuit exports a reference voltage value.
Further, the constant-current circuit includes operational amplifier, and the operational amplifier exports constant voltage.
Further, the output matrix current adjustment circuit includes adjustable resistance, and the adjustable resistance is for adjusting
The input voltage of the operational amplifier.
Further, the adjustable constant-flow source adapter further includes charging circuit, and the charging circuit is used to be the electricity
Pond charging.
The two of the utility model aim are to provide a kind of microscope, can provide for microscope auxiliary LED light source constant
The power supply of electric current facilitates the use demand under outdoor research conditions.
The two of the purpose of this utility model adopt the following technical scheme that realization:
A kind of microscope, including microscope ontology, the microscope ontology are provided with LED light source, and the LED light source connects
Be connected to adjustable constant-flow source adapter, the adjustable constant-flow source adapter is used to provide constant current for the LED light source, it is described can
Adjusting constant current source adapter is a kind of adjustable constant-flow source adapter as described in one of the utility model aim.
Compared with prior art, the utility model has the beneficial effects that:
A kind of adjustable constant-flow source adapter and microscope of the utility model, pass through and increase electricity in adjustable constant flow source circuit
Pond, cooperation booster circuit make adjustable constant-flow source adapter when not having external direct current power supply, also can be by included
Battery provides constant current to LED light source, meets to the use of LED light source in the case where no external direct current power supply, convenient
Use demand under its outdoor research conditions.
Detailed description of the invention
Fig. 1 is a kind of each modular circuit connection schematic diagram of adjustable constant-flow source adapter of utility model；
Fig. 2 is each modular circuit connection schematic diagram of Fig. 1 adjustable constant-flow circuit；
Fig. 3 is a kind of circuit diagram of adjustable constant-flow source adapter of Fig. 1.
In figure: 1, battery；2, booster circuit；3, adjustable constant-flow circuit；31, reference voltage circuit；32, output electric current adjustment
Circuit；33, constant-current circuit.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that
Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
Embodiment one:
A kind of adjustable constant-flow source adapter as shown in Figure 1, comprising: battery 1, for exporting the direct current of 3.7V-4.2V
Pressure；Booster circuit 2, booster circuit 2 are connect with the output end of battery 1, and booster circuit 2 is that the output voltage of battery 1 boosts；It is adjustable
Constant-current circuit 3, for making the electric current constant current of output, adjustable constant-flow circuit 3 can be connected as LED light source with LED light source 4 and mention
For constant current for microscopic study use.As shown in Fig. 2-Fig. 3, adjustable constant-flow circuit 3 includes reference voltage circuit 31, defeated
Matrix current adjustment circuit 32 and constant-current circuit 33 out.Adjustable constant-flow circuit 3 connects LED light emitting diode D3, the booster circuit 2
It is in parallel with the battery 1 to boost voltage input terminal U2i, the boost voltage output end U2o and adjustable constant-flow circuit 3 of booster circuit 2
Reference voltage input U3i it is in parallel, the adjustment voltage output end U3o connection LED light emitting diode D3 of adjustable constant-flow circuit 3.
As shown in figure 3, in the present embodiment, which includes boost switching regulator U2, boost switching regulator U2's
Power pins VDD2 and enabled pin CE3 is all connected with the cathode of diode D1, and the anode of diode D1 connects the one of inductance L1
End, the other end of inductance L1 connect the positive terminal of battery 1, are also parallel with capacitor C3, diode between the positive electrode and negative electrode of battery 1
The anode of D1 is also connected with the drain electrode for expanding stream metal-oxide-semiconductor Q1, expands the ground connection of the source electrode connection boost switching regulator U1 of stream metal-oxide-semiconductor Q1
Pin GND4, expands the external transistor legs EXT5 of the grid connection boost switching regulator U1 of stream metal-oxide-semiconductor Q1, and booster type is opened
The voltage output pin VOUT1 for closing voltage-stablizer U1 concatenates the cathode of connection diode D1 after second resistance R2, and series resistor R3
After be grounded, formed boost voltage output end U2o.Booster circuit 2 receives the DC voltage for the 3.7V-4.2V that battery 1 exports, will be electric
Pressure rises to 5V, powers for adjustable constant-flow circuit 3.In booster circuit 2, by boost switching regulator U2, (model is preferably
ME2109) stream metal-oxide-semiconductor Q1 is expanded in control, and N-channel switching frequency exports steady in 300KHz, resistance R2, R3 serial Feedback to ME2109
Press 5V.
As shown in figure 3, adjustable constant-flow circuit 3 includes reference voltage circuit 31, output matrix current adjustment circuit 32 and Constant Electric Current
Road 33；Reference voltage circuit 31 is connected to voltage input end U3i, and the reference voltage output end U31O connection of reference voltage circuit 31 is defeated
The electric current of matrix current adjustment circuit 32 adjusts input terminal U32i out, and the electric current adjustment output end U32O of output matrix current adjustment circuit 32 connects
Connect the constant current input terminal U33i of constant-current circuit 33, the constant current output end (i.e. adjustable 3 output end U3o of constant-current circuit) of constant-current circuit 33
Connect LED light emitting diode D3.In the present embodiment, reference voltage circuit 31 includes the filter capacitor C4 being connected in parallel and pressure stabilizing
The cathode of the diode D1, the cathode of filter capacitor C4 are connected after the cathode series resistance R4 of diode D2, filter capacitor C4
Ground connection；Exporting matrix current adjustment circuit 32 includes potentiometer R5, with the after the first fixed terminal series resistor R6 of potentiometer R5
The adjusting exit and the second fixed terminal of shunt regulator diode D2 between two fixed terminals, potentiometer R5 form electricity
Stream adjustment output end U32O；Constant-current circuit 33 includes operational amplifier U3B, the normal phase input end and negative of operational amplifier U3B
Capacitor C4 is connected between input terminal, the normal phase input end of operational amplifier U3B is also connected with the adjusting exit of potentiometer R5, fortune
Calculate one end of the amplifier positive pole connection capacitor C5 of amplifier U3B, the fortune of the other end connection operational amplifier U3B of capacitor C5
Discharge source cathode, amplifier power cathode are grounded, and the grid of metal-oxide-semiconductor Q2 are connected after the output end series resistor R6 of operational amplifier U3B
Pole, the source electrode of metal-oxide-semiconductor Q2 are separately connected one end of resistance R7 and resistance R8, and the other end of resistance R7 connects operational amplifier U3B
Negative-phase input, resistance R8 the other end ground connection, metal-oxide-semiconductor Q2 drain electrode connection LED light emitting diode D3 cathode, LED hair
The anode of optical diode D3 connects the cathode of the first diode D1.
In use process, the reference voltage circuit 31 of adjustable constant-flow circuit 3 exports a reference voltage value, exports electric current tune
Whole circuit 32 is according to the reference voltage value, by adjusting adjustable resistance R5, to tune up or turn down the operation in constant-current circuit 33
The control voltage Vs of amplifier U3B normal phase input end makes to tune up or turn down the output voltage values of operational amplifier U3B
The adjustable constant-flow circuit 3 for obtaining the present embodiment becomes controlled tabilized current power supply.The output end of operational amplifier U3B is connected by resistance R4
It is connected to the grid G of transistor Q2, forms pressure drop, transistor Q2 conducting, the source electrode of transistor Q2 after divider resistance R4 partial pressure thereon
The negative-phase input for being connected to operational amplifier U3B constitutes series electric circuit negative feedback system, when the output electricity of operational amplifier U3B
When pressure value transient changing, series electric circuit negative feedback system adjusts the voltage value of operational amplifier U3B output by inhibiting variation
, due to the presence of negative-feedback, it ensure that output electricity when normal phase input end (+) voltage of operational amplifier U3B is constant to stabilization
That presses is constant, and the driving current of LED is linearly related to the output voltage of operational amplifier U3B, to flow through LED load
Electric current I be constant current.
In addition, a kind of adjustable constant-flow source adapter of the present embodiment is also added into charging circuit (not shown go out), charging electricity
Road is connect with battery 1, and when needing to charge, the charging circuit other end connects 5v DC power supply, is charged for battery 1, so that battery 1
It being capable of continued power.
A kind of adjustable constant-flow source adapter of the present embodiment, by increasing battery 1 in adjustable constant flow source circuit, cooperation is risen
Volt circuit 2 makes adjustable constant-flow source adapter when not having external direct current power supply, can also be given by included battery 1
LED light source provides constant current, meets in the case where no external direct current power supply to the use of LED light source, facilitates its open air
Use demand under research conditions.
Embodiment two:
Embodiment two provides a kind of microscope, including microscope ontology, and microscope ontology is provided with LED light source, LED light
Source is connected with adjustable constant-flow source adapter, and adjustable constant-flow source adapter is used to provide constant current, tabilized current power supply for LED light source
Adapter is a kind of adjustable constant-flow source adapter as described in the present embodiment one.
A kind of microscope of the present embodiment, by increasing battery 1 in adjustable constant flow source circuit, cooperation booster circuit 2 makes
Adjustable constant-flow source adapter is obtained when not having external direct current power supply, also LED light source can be given to provide by included battery 1
Constant current meets in the case where no external direct current power supply to the use of LED light source, and it is right under its outdoor research conditions to facilitate
Microscopical use demand.
Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model
Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to
In the utility model range claimed.
Claims (10)
1. a kind of adjustable constant-flow source adapter characterized by comprising
Battery is used for output voltage；
Booster circuit, the booster circuit are connect with the output end of the battery, and the booster circuit is the output of the battery
Boost in voltage；
Adjustable constant-flow circuit, for make output electric current constant current, the adjustable constant-flow circuit include reference voltage circuit,
Export matrix current adjustment circuit and constant-current circuit.
2. a kind of adjustable constant-flow source adapter as described in claim 1, it is characterised in that: the battery exports 3.7V-4.2V
DC voltage.
3. a kind of adjustable constant-flow source adapter as described in claim 1, it is characterised in that: the booster circuit includes pressure stabilizing
Device.
4. a kind of adjustable constant-flow source adapter as claimed in claim 3, it is characterised in that: the voltage-stablizer exports 5V pressure stabilizing.
5. a kind of adjustable constant-flow source adapter as claimed in claim 3, it is characterised in that: the voltage-stablizer is ME2109 series
Booster type voltage-stablizer.
6. a kind of adjustable constant-flow source adapter as described in claim 1, it is characterised in that: the reference voltage circuit output one
A reference voltage value.
7. a kind of adjustable constant-flow source adapter as described in claim 1, it is characterised in that: the constant-current circuit includes that operation is put
Big device, the operational amplifier export constant voltage.
8. a kind of adjustable constant-flow source adapter as claimed in claim 7, it is characterised in that: the output matrix current adjustment circuit packet
Adjustable resistance is included, the adjustable resistance is used to adjust the input voltage of the operational amplifier.
9. a kind of adjustable constant-flow source adapter as described in claim 1, it is characterised in that: the adjustable constant-flow source adapter is also
Including charging circuit, the charging circuit is used to charge for the battery.
10. a kind of microscope, including microscope ontology, the microscope ontology is provided with LED light source, it is characterised in that: described
LED light source is connected with adjustable constant-flow source adapter, and the adjustable constant-flow source adapter is used to provide constant electricity for the LED light source
Stream, the adjustable constant-flow source adapter are a kind of adjustable constant-flow source adapter as described in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820869909.4U CN208489795U (en) | 2018-06-06 | 2018-06-06 | A kind of adjustable constant-flow source adapter and microscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820869909.4U CN208489795U (en) | 2018-06-06 | 2018-06-06 | A kind of adjustable constant-flow source adapter and microscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208489795U true CN208489795U (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820869909.4U Active CN208489795U (en) | 2018-06-06 | 2018-06-06 | A kind of adjustable constant-flow source adapter and microscope |
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| Country | Link |
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| CN (1) | CN208489795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066289A (en) * | 2018-08-21 | 2018-12-21 | 江苏优为视界科技有限公司 | A kind of high brightness flash generator based on semiconductor laser |
-
2018
- 2018-06-06 CN CN201820869909.4U patent/CN208489795U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066289A (en) * | 2018-08-21 | 2018-12-21 | 江苏优为视界科技有限公司 | A kind of high brightness flash generator based on semiconductor laser |
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