CN205039396U - Take semiconductor laser drive power supply of control by temperature change circuit - Google Patents
Take semiconductor laser drive power supply of control by temperature change circuit Download PDFInfo
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- CN205039396U CN205039396U CN201520698754.9U CN201520698754U CN205039396U CN 205039396 U CN205039396 U CN 205039396U CN 201520698754 U CN201520698754 U CN 201520698754U CN 205039396 U CN205039396 U CN 205039396U
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- laser drive
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 241000931526 Acer campestre Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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- Semiconductor Lasers (AREA)
Abstract
The utility model provides a take semiconductor laser drive power supply of control by temperature change circuit, relates to semiconductor laser drive power supply technical field. General semiconductor laser drive power supply comprises AC -DC converting circuit, single -chip control circuit, comparison circuit, drive circuit, current feedback circuit, laser instrument and protective device, current -limiting circuit. The utility model discloses a control by temperature change circuit part has been added in general semiconductor laser drive power supply design basis. With semiconductor laser drive circuit and control by temperature change circuit collection in an organic whole. The control by temperature change circuit is connected with AC -DC converting circuit to be connected with single -chip control circuit. The utility model discloses for general semiconductor laser drive power supply and the independent design and production mode of control by temperature change power, reduced the whole volume of power, reduced interface circuit, strengthened the reliability of power.
Description
Technical field
The utility model relates to laser drive power technical field, especially relates to semiconductor laser drive power technical field.
Background technology
Semiconductor laser is the advantage such as wave-length coverage is wide, volume is little, long service life and being widely used because having.But semiconductor laser is very responsive to temperature, the change of laser temperature can cause the drift of optical maser wavelength.In addition, in onesize drive current situation, the change of laser temperature also can cause the change of Output optical power.So the laser of output wavelength and power stability wanted by semiconductor laser, except will being equipped with high performance driving power, also must being equipped with high-precision temperature control circuit and thermostatic control is carried out to it.At present, general semiconductor laser drive power and semiconductor laser temperature control power supply are all independent design, independent making, and its shortcoming is that overall volume is comparatively large, is not suitable for using when there being a definite limitation to space.
Summary of the invention
The utility model is in general semiconductor laser drive power design basis, add a kind of high-precision temperature control circuit module, except can noise spectra of semiconductor lasers provide except stable drive current, noise spectra of semiconductor lasers can also carry out thermostatic control.
The scheme that the utility model adopts in its technical problem of solution is: general semiconductor laser drive power comprises AC-DC change-over circuit, single chip machine controlling circuit, comparison circuit, drive circuit, current feedback circuit, laser and protection device, current-limiting circuit.The utility model feature is: add temperature control circuit part.Temperature control circuit is connected with AC-DC change-over circuit, single chip machine controlling circuit, laser and protection device.Temperature control circuit comprises semiconductor cooler, Darlington transistor, operational amplifier, thermistor and conventional, electric-resistance electric capacity.Temperature control circuit is with semiconductor cooler (TEC) for core devices, with the thermistor of negative temperature coefficient for temperature sampling element, take Darlington transistor as driving element, can carry out heating to controlled device controlling with the Double-direction Temperature that freezes.Can by single chip machine controlling circuit the temperature of controlled device be set and be detected.Temperature control circuit and drive circuit for laser share AC/DC change-over circuit.
The beneficial effects of the utility model are: semiconductor laser device driving circuit and temperature control circuit are integrated in one, relative to traditional laser drive power and temperature control circuit independent design production method, reduce power source integral volume, decrease interface circuit, add reliability.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is the utility model temperature control circuit schematic diagram.
In figure, U1, U2 are operational amplifier, and R1, R2, R3, R4, R5 are resistance, and RT is thermistor, and W1 is potentiometer, and C1 is electric capacity, and Q1, Q2 are Darlington transistor, and TEC is semiconductor cooler.
Embodiment
In FIG, general semiconductor laser drive power comprises AC-DC change-over circuit, single chip machine controlling circuit, comparison circuit, drive circuit, current feedback circuit, laser and protection device, current-limiting circuit.The utility model adds temperature control circuit part in general semiconductor laser drive power design basis.
In fig. 2, AC220V input, after AC-DC change-over circuit, is provide DC power supply to single chip machine controlling circuit on the one hand, is provide driving electric energy to temperature control circuit on the other hand.D/A converted output signal and the temperature of temperature control circuit of single chip machine controlling circuit are arranged holds (R2) to be connected, and detected temperatures signal is connected with the A/D conversion inputs of single chip machine controlling circuit.The temperature sampling device of controlled device is the thermistor (RT) of negative temperature coefficient.Outputting drive voltage is to Darlington transistor (Q1, Q2) with the size of current of control TEC and direction after operational amplifier relatively for set temperature signal and detected temperatures signal, and realization heating and refrigeration Double-direction Temperature control.
Claims (1)
1. the semiconductor laser drive power with temperature control circuit; comprise AC-DC change-over circuit, single chip machine controlling circuit, comparison circuit, drive circuit, current feedback circuit, laser and protection device, current-limiting circuit; it is characterized in that: add temperature control circuit part; temperature control circuit is connected with AC-DC change-over circuit, single chip machine controlling circuit, laser and protection device, and temperature control circuit comprises semiconductor cooler, Darlington transistor, operational amplifier, thermistor and conventional, electric-resistance electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520698754.9U CN205039396U (en) | 2015-09-11 | 2015-09-11 | Take semiconductor laser drive power supply of control by temperature change circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520698754.9U CN205039396U (en) | 2015-09-11 | 2015-09-11 | Take semiconductor laser drive power supply of control by temperature change circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205039396U true CN205039396U (en) | 2016-02-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520698754.9U Active CN205039396U (en) | 2015-09-11 | 2015-09-11 | Take semiconductor laser drive power supply of control by temperature change circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205039396U (en) |
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2015
- 2015-09-11 CN CN201520698754.9U patent/CN205039396U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Chengyan Document name: payment instructions |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Chengyan Document name: Notice of Termination of Patent Rights |
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| DD01 | Delivery of document by public notice |