CN203167398U - Spectroscopic lamp - Google Patents
Spectroscopic lamp Download PDFInfo
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- CN203167398U CN203167398U CN 201320063850 CN201320063850U CN203167398U CN 203167398 U CN203167398 U CN 203167398U CN 201320063850 CN201320063850 CN 201320063850 CN 201320063850 U CN201320063850 U CN 201320063850U CN 203167398 U CN203167398 U CN 203167398U
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- electric capacity
- resistance
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Abstract
The utility model discloses a spectroscopic lamp and belongs to the technical field of electron. The spectroscopic lamp comprises a bulb filled with rubidium steam and luminance starting gas, an exciting coil, a shield cylinder, an exciting circuit and a constant temperature apparatus. The bulb and the exciting coil are arranged in the shield cylinder; the exciting coil is wound on the bulb; the shield cylinder and the exciting circuit are arranged in the constant temperature apparatus; the exciting circuit is electrically connected with the exciting circuit; the exciting circuit comprises an oscillation frequency selection circuit, an amplification circuit, a filter circuit, a temperature compensating circuit and a feedback resistor; the amplification circuit comprises a triode and a first resistor; the oscillation frequency selection circuit, the amplification circuit and the filter circuit are successively connected; a collector electrode of the triode is connected with the triode; the collector electrode of the triode is connected with the power and with a base electrode of the triode through the first resistor and the temperature compensating circuit; and an emitter electrode of the triode is connected with the oscillation frequency selection circuit through the feedback resistor. The utility model improves the stability of atom frequency scale.
Description
Technical field
The utility model relates to electronic technology field, particularly a kind of spectroscopic lamp.
Background technology
Atomic frequency standard is a kind of frequency source with good stable degree and accuracy.Spectroscopic lamp is the critical component of atomic frequency standard, angle from long-term stability, the stable index with atomic frequency standard of the light intensity of spectroscopic lamp and spectral profile is in close relations, angle from short-term stability, the trimmed book back noise of spectroscopic lamp has influenced the signal to noise ratio of atomic frequency standard, so the performance quality of spectroscopic lamp is to judge a major criterion of atomic frequency standard quality.
Existing spectroscopic lamp generally includes bulb, excitation coil, shielding cylinder, exciting circuit and the thermostat that inside is filled with rubidium steam and build-up of luminance gas.Bulb and excitation coil are arranged in the shielding cylinder, and shielding cylinder and exciting circuit are arranged in the thermostat, and excitation coil and exciting circuit are electrically connected.Wherein, exciting circuit is a carat bold and vigorous circuit, and exciting circuit comprises components and parts such as triode and resistance, electric capacity, inductance.
In realizing process of the present utility model, the inventor finds that there is following problem at least in prior art:
Because triode is subjected to the influence of ambient temperature very big, carrying out along with spectroscopic lamp work, ambient temperature can raise, thermostat can not in time reduce the temperature around the triode, and triode is subjected to the influence that ambient temperature raises, and the electric current in the collector electrode increases, and then cause exciting power to increase, the light intensity of spectroscopic lamp increases, and the optical frequency shift of atomic frequency standard increases, and has influenced the stability of atomic frequency standard.
The utility model content
In order to solve the stable affected problem of prior art atomic frequency standard, the utility model embodiment provides a kind of spectroscopic lamp.Described technical scheme is as follows:
The utility model implements to provide a kind of spectroscopic lamp, described spectroscopic lamp comprises that inside is filled with the bulb of rubidium steam and build-up of luminance gas, excitation coil, shielding cylinder, exciting circuit, and thermostat, described bulb and described excitation coil are arranged in the described shielding cylinder, described excitation coil is wound on the described bulb, described shielding cylinder and described exciting circuit are arranged in the described thermostat, described excitation coil and described exciting circuit are electrically connected, described exciting circuit comprises the vibration frequency selection circuit, amplifying circuit, filter circuit, temperature-compensation circuit, and feedback resistance, described amplifying circuit comprises triode and first resistance, described vibration frequency selection circuit, described amplifying circuit and described filter circuit are electrically connected successively, the collector electrode of described triode connects power supply, the collector electrode of described triode links to each other with the base stage of described triode with described temperature-compensation circuit by described first resistance, and the emitter of described triode links to each other with described vibration frequency selection circuit by described feedback resistance.
Particularly, described vibration frequency selection circuit comprises first inductance, first electric capacity, second electric capacity and the 3rd electric capacity; The base stage of described triode links to each other with the emitter of described triode by described first electric capacity; One end of described first electric capacity links to each other the other end ground connection of described first inductance by described feedback resistance with an end of described first inductance; The other end of described first electric capacity links to each other with an end of described second electric capacity, and the other end of described second electric capacity is successively by described excitation coil, described the 3rd capacity earth.
Particularly, described filter circuit comprises the 4th electric capacity, the collector electrode of the described triode of a termination of described the 4th electric capacity, the other end ground connection of described the 4th electric capacity.
Particularly, described temperature-compensation circuit comprises diode, second resistance, second inductance and the 5th electric capacity; Described second inductance is connected between the base stage and described first resistance of described triode; After described second resistance and the series connection of described diode, in parallel with described the 5th electric capacity, one end of described second resistance links to each other with the positive pole of described diode, the minus earth of described diode, and the other end of described second resistance links to each other with the base stage of described triode by described second inductance.
Preferably, described bulb is plane column ending bubble, described bulb comprises the bubble tail that bubble body that the bubble top that circular dull and stereotyped sapphire makes, cylindrical sapphire glass pipe are made and alkali metal glass are made, and connects with alkali metal between described bubble top, described bubble body and the described bubble tail.
Preferably, described excitation coil adopt single heavy gauge wire individual layer close around mode make, described excitation coil adopts the high-frequency dielectric material to do coil rack
Preferably, the ratio range of the loop length of described excitation coil and coil diameter is 0.8 ~ 1.2.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
By temperature-compensation circuit and feedback resistance the signal of exciting circuit is carried out temperature-compensating, the electric current of stablizing in the collector electrode of the triode in the exciting circuit does not change with the variation of ambient temperature, thereby prevent variation, the spectroscopic lamp intensity variations of exciting power, the variation of atomic frequency standard optical frequency shift, improved the stability of atomic frequency standard.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of spectroscopic lamp of providing of the utility model embodiment;
Fig. 2 is the circuit diagram of the temperature-compensation circuit that provides of the utility model embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model execution mode is described in further detail.
Embodiment
The utility model embodiment provides a kind of spectroscopic lamp, and referring to Fig. 1, this spectroscopic lamp comprises that inside is filled with the bulb 1 of rubidium steam and build-up of luminance gas, excitation coil L0, shielding cylinder 2, exciting circuit 3 and thermostat 4.Bulb 1 and excitation coil L0 are arranged in the shielding cylinder 2, and excitation coil L0 is wound on the bulb 1, and shielding cylinder 2 and exciting circuit 3 are arranged in the thermostat 4, and excitation coil L0 and exciting circuit 3 are electrically connected.
Wherein, referring to Fig. 2, exciting circuit 3 comprises vibration frequency selection circuit 31, amplifying circuit 32, filter circuit 33, temperature-compensation circuit 34 and feedback resistance R0.Amplifying circuit 32 comprises triode Q and first resistance R 1.Vibration frequency selection circuit 31, amplifying circuit 32 and filter circuit 33 are electrically connected successively, the collector electrode of triode Q connects power Vcc, the collector electrode of triode Q links to each other with the base stage of temperature-compensation circuit 34 with triode Q by first resistance R 1, and the emitter of triode Q links to each other with vibration frequency selection circuit 31 by feedback resistance R0.
Particularly, vibration frequency selection circuit 31 comprises first inductance L 1, first capacitor C 1, second capacitor C 2 and the 3rd capacitor C 3.The base stage of triode Q links to each other with the emitter of triode Q by first capacitor C 1.One end of first capacitor C 1 links to each other the other end ground connection of first inductance L 1 by feedback resistance R0 with an end of first inductance L 1.The other end of first capacitor C 1 links to each other with an end of second capacitor C 2, and the other end of second capacitor C 2 is successively by excitation coil L0, the 3rd capacitor C 3 ground connection.
Particularly, filter circuit 33 comprises the collector electrode of a termination triode Q of the 4th capacitor C 4, the four capacitor C 4, the other end ground connection of the 4th capacitor C 4.
Particularly, temperature-compensation circuit 34 comprises diode D, second resistance R 2, second inductance L 2 and the 5th capacitor C 5.Second inductance L 2 is connected between the base stage and first resistance R 1 of triode Q.After second resistance R 2 and the diode D series connection, in parallel with the 5th capacitor C 5, an end of second resistance R 2 links to each other with the positive pole of diode D, the minus earth of diode D, and the other end of second resistance R 2 links to each other with the base stage of triode Q by second inductance L 2.
Preferably, bulb 1 is plane column ending bubble, and bulb 1 comprises the bubble tail that bubble top that circular dull and stereotyped sapphire makes, bubble body that cylindrical sapphire glass pipe is made and alkali metal glass are made, and connects with alkali metal between bubble top, bubble body and the bubble tail.
Preferably, excitation coil L0 adopt single heavy gauge wire individual layer close around mode make, excitation coil L0 adopts the high-frequency dielectric material to do coil rack.
Preferably, the ratio range of the loop length of excitation coil L0 and coil diameter is 0.8 ~ 1.2.
Simply introduce the operation principle of the spectroscopic lamp that the utility model provides below:
After 31 starting of oscillations of vibration frequency selection circuit, oscillator signal outputs among the excitation coil L0 rubidium atom generation transition in the excitation coil L0 exciter bulb 1 through the processing of amplifying circuit 32 and filter circuit 33.When the ambient temperature of exciting circuit 3 raise, on the one hand, the collector current of triode Q increased, and the forward voltage drop of diode D reduces, and the output current of diode D reduces, balance the electric current of triode Q; On the other hand, the collector current of triode Q increases, and the emitter current of triode Q increases, and the voltage on the feedback resistance R0 increases, and the emission voltage of triode Q increases, and the voltage between the collector and emitter of triode Q reduces, and the electric current of triode Q reduces.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is: by temperature-compensation circuit and feedback resistance the signal of exciting circuit is carried out temperature-compensating, the electric current of stablizing in the collector electrode of the triode in the exciting circuit does not change with the variation of ambient temperature, thereby prevent variation, the spectroscopic lamp intensity variations of exciting power, the variation of atomic frequency standard optical frequency shift, improved the stability of atomic frequency standard.In addition, bulb adopts the plane column ending bubble of sapphire material, improved the performance of bulb, increased the life-span of spectroscopic lamp, excitation coil adopt single heavy gauge wire individual layer close around the mode ratio range of making, adopt the high-frequency dielectric material to do coil rack, loop length and coil diameter be 0.8 ~ 1.2, reduced energy loss.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (7)
1. spectroscopic lamp, described spectroscopic lamp comprises that inside is filled with the bulb of rubidium steam and build-up of luminance gas, excitation coil, shielding cylinder, exciting circuit and thermostat, described bulb and described excitation coil are arranged in the described shielding cylinder, described excitation coil is wound on the described bulb, described shielding cylinder and described exciting circuit are arranged in the described thermostat, described excitation coil and described exciting circuit are electrically connected, and it is characterized in that
Described exciting circuit comprises vibration frequency selection circuit, amplifying circuit, filter circuit, temperature-compensation circuit and feedback resistance, described vibration frequency selection circuit, described amplifying circuit and described filter circuit are electrically connected successively, described amplifying circuit comprises triode and first resistance, the collector electrode of described triode connects power supply, the collector electrode of described triode links to each other with the base stage of described triode with described temperature-compensation circuit by described first resistance, and the emitter of described triode links to each other with described vibration frequency selection circuit by described feedback resistance.
2. spectroscopic lamp according to claim 1 is characterized in that, described vibration frequency selection circuit comprises first inductance, first electric capacity, second electric capacity and the 3rd electric capacity; The base stage of described triode links to each other with the emitter of described triode by described first electric capacity; One end of described first electric capacity links to each other the other end ground connection of described first inductance by described feedback resistance with an end of described first inductance; The other end of described first electric capacity links to each other with an end of described second electric capacity, and the other end of described second electric capacity is successively by described excitation coil, described the 3rd capacity earth.
3. spectroscopic lamp according to claim 2 is characterized in that, described filter circuit comprises the 4th electric capacity, the collector electrode of the described triode of a termination of described the 4th electric capacity, the other end ground connection of described the 4th electric capacity.
4. spectroscopic lamp according to claim 3 is characterized in that, described temperature-compensation circuit comprises diode, second resistance, second inductance and the 5th electric capacity; Described second inductance is connected between the base stage and described first resistance of described triode; After described second resistance and the series connection of described diode, in parallel with described the 5th electric capacity, one end of described second resistance links to each other with the positive pole of described diode, the minus earth of described diode, and the other end of described second resistance links to each other with the base stage of described triode by described second inductance.
5. according to each described spectroscopic lamp of claim 1-4, it is characterized in that, described bulb is plane column ending bubble, described bulb comprises the bubble tail that bubble body that the bubble top that circular dull and stereotyped sapphire makes, cylindrical sapphire glass pipe are made and alkali metal glass are made, and connects with alkali metal between described bubble top, described bubble body and the described bubble tail.
6. according to each described spectroscopic lamp of claim 1-4, it is characterized in that, described excitation coil adopt single heavy gauge wire individual layer close around mode make, described excitation coil adopts the high-frequency dielectric material to do coil rack.
7. spectroscopic lamp according to claim 6 is characterized in that, the loop length of described excitation coil and the ratio range of coil diameter are 0.8 ~ 1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320063850 CN203167398U (en) | 2013-02-04 | 2013-02-04 | Spectroscopic lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320063850 CN203167398U (en) | 2013-02-04 | 2013-02-04 | Spectroscopic lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203167398U true CN203167398U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320063850 Expired - Fee Related CN203167398U (en) | 2013-02-04 | 2013-02-04 | Spectroscopic lamp |
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| CN (1) | CN203167398U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576479A (en) * | 2015-12-14 | 2016-05-11 | 北京无线电计量测试研究所 | Mercury spectroscopic lamp |
| CN105916279A (en) * | 2016-01-25 | 2016-08-31 | 江汉大学 | Sapphire-based light source apparatus |
-
2013
- 2013-02-04 CN CN 201320063850 patent/CN203167398U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576479A (en) * | 2015-12-14 | 2016-05-11 | 北京无线电计量测试研究所 | Mercury spectroscopic lamp |
| CN105576479B (en) * | 2015-12-14 | 2018-08-03 | 北京无线电计量测试研究所 | A kind of mercury spectral lamp |
| CN105916279A (en) * | 2016-01-25 | 2016-08-31 | 江汉大学 | Sapphire-based light source apparatus |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140204 |