JP2015173313A5 - - Google Patents
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- JP2015173313A5 JP2015173313A5 JP2014047510A JP2014047510A JP2015173313A5 JP 2015173313 A5 JP2015173313 A5 JP 2015173313A5 JP 2014047510 A JP2014047510 A JP 2014047510A JP 2014047510 A JP2014047510 A JP 2014047510A JP 2015173313 A5 JP2015173313 A5 JP 2015173313A5
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- temperature
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Description
上記従来例の問題点を解決するための本発明は、恒温槽付水晶発振器の温度制御回路であって、安定化電源に接続し、恒温槽内の温度を検出して検出温度に相当する電圧を出力するサーミスタと、一端が安定化電源に接続し、他端が接地された、第１及び第２の抵抗から成る直列回路と、第１の抵抗と第２の抵抗の間の点から供給される基準電圧を一方の入力端子に入力し、検出温度に相当する電圧を他方の入力端子に入力し、基準電圧と検出温度に相当する電圧との差分を出力するオペアンプと、オペアンプからの出力をベースに入力するＰＮＰ型パワートランジスタと、一端が電源電圧に接続し、他端がパワートランジスタのエミッタに接続するヒータ抵抗と、一端が電源電圧に接続し、他端が接地され、第３の抵抗と第４の抵抗とが直列接続されたブリッジ抵抗回路とを備え、第３の抵抗と第
４の抵抗との間の点が第１の抵抗と第２の抵抗との間の点に接続することを特徴としている。
The present invention for solving the problems of the above conventional example is a temperature control circuit of a crystal oscillator with a thermostat, which is connected to a stabilized power source, detects the temperature in the thermostat, and corresponds to the detected temperature A thermistor that outputs a voltage, a series circuit composed of first and second resistors, one end of which is connected to a stabilized power source and the other end grounded, and a point between the first resistor and the second resistor. The reference voltage to be input is input to one input terminal, the voltage corresponding to the detected temperature is input to the other input terminal, the difference between the reference voltage and the voltage corresponding to the detected temperature is output, and the output from the operational amplifier PNP type power transistor that inputs to the base, one end connected to the power supply voltage, the other end connected to the emitter of the power transistor, one end connected to the power supply voltage, the other end grounded, the third resistor and a fourth resistor and a straight And a bridge connected resistor circuit, a point between the third resistor and the fourth resistor are characterized in that connected to a point between the first resistor and the second resistor.
本発明によれば、恒温槽付水晶発振器の温度制御回路であって、安定化電源に接続し、恒温槽内の温度を検出して検出温度に相当する電圧を出力するサーミスタと、一端が安定化電源に接続し、他端が接地された、第１及び第２の抵抗から成る直列回路と、第１の抵抗と第２の抵抗の間の点から供給される基準電圧を一方の入力端子に入力し、検出温度に相当する電圧を他方の入力端子に入力し、基準電圧と検出温度に相当する電圧との差分を出力するオペアンプと、オペアンプからの出力をベースに入力するＰＮＰ型パワートランジスタと、一端が電源電圧に接続し、他端がパワートランジスタのエミッタに接続するヒータ抵抗と、一端が電源電圧に接続し、他端が接地され、第３の抵抗と第４の抵抗とが直列接続されたブリッジ抵抗回路とを備え、第３の抵抗と第４の抵抗との間の点が第１の抵抗と第２の抵抗との間の点に接続する温度制御回路としているので、電源電圧が変動した場合に、ＰＮＰ型パワートランジスタのベース電圧をエミッタ電圧と同方向に変化させて、ベース−エミッタ間の電圧を一定に保持することができ、電源電圧が急激に変化しても、安定した温度制御を行って出力周波数信号を安定させることができる効果がある。 According to the present invention, there is provided a temperature control circuit for a crystal oscillator with a thermostat, which is connected to a stabilized power source, detects the temperature in the thermostat and outputs a voltage corresponding to the detected temperature, and one end is stable. One input terminal for connecting a reference circuit supplied from a point between the first resistor and the second resistor, and a series circuit composed of a first resistor and a second resistor, connected to the power supply and having the other end grounded An operational amplifier that inputs a voltage corresponding to the detected temperature to the other input terminal, outputs a difference between the reference voltage and a voltage corresponding to the detected temperature, and a PNP type power transistor that inputs based on the output from the operational amplifier When one end connected to the power supply voltage, a heater resistance and the other terminal is connected to the emitter of the power transistor, one end is connected to the power supply voltage, the other end is grounded, a third resistor and the fourth resistor and in series Connected bridge resistor circuit And a temperature control circuit in which a point between the third resistor and the fourth resistor is connected to a point between the first resistor and the second resistor, so that when the power supply voltage fluctuates, By changing the base voltage of the PNP type power transistor in the same direction as the emitter voltage, the base-emitter voltage can be kept constant, and even if the power supply voltage changes suddenly, stable temperature control is performed. There is an effect that the output frequency signal can be stabilized.
Claims (1)
安定化電源に接続し、恒温槽内の温度を検出して検出温度に相当する電圧を出力するサーミスタと、
一端が安定化電源に接続し、他端が接地された、第１及び第２の抵抗から成る直列回路と、
前記第１の抵抗と第２の抵抗の間の点から供給される基準電圧を一方の入力端子に入力し、前記検出温度に相当する電圧を他方の入力端子に入力し、前記基準電圧と前記検出温度に相当する電圧との差分を出力するオペアンプと、
前記オペアンプからの出力をベースに入力するＰＮＰ型パワートランジスタと、
一端が電源電圧に接続し、他端が前記パワートランジスタのエミッタに接続するヒータ抵抗と、
一端が電源電圧に接続し、他端が接地され、第３の抵抗と第４の抵抗とが直列接続されたブリッジ抵抗回路とを備え、
前記第３の抵抗と前記第４の抵抗との間の点が前記第１の抵抗と第２の抵抗との間の点に接続することを特徴とする温度制御回路。 A temperature control circuit for a crystal oscillator with a thermostatic bath,
A thermistor that connects to a stabilized power supply, detects the temperature in the thermostatic chamber, and outputs a voltage corresponding to the detected temperature;
A series circuit composed of first and second resistors, one end connected to a stabilized power supply and the other end grounded;
A reference voltage supplied from a point between the first resistor and the second resistor is input to one input terminal, a voltage corresponding to the detected temperature is input to the other input terminal, and the reference voltage and the An operational amplifier that outputs a difference from the voltage corresponding to the detected temperature;
A PNP-type power transistor that inputs the output from the operational amplifier as a base;
A heater resistor having one end connected to the power supply voltage and the other end connected to the emitter of the power transistor;
One end is connected to the power supply voltage, the other end is grounded, a third resistor and the fourth resistor is a bridge resistor circuits connected in series,
A temperature control circuit, wherein a point between the third resistor and the fourth resistor is connected to a point between the first resistor and the second resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014047510A JP6274919B2 (en) | 2014-03-11 | 2014-03-11 | Temperature control circuit of crystal oscillator with thermostatic chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014047510A JP6274919B2 (en) | 2014-03-11 | 2014-03-11 | Temperature control circuit of crystal oscillator with thermostatic chamber |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018001008A Division JP6537645B2 (en) | 2018-01-09 | 2018-01-09 | Temperature control circuit of crystal oscillator with thermostat |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2015173313A JP2015173313A (en) | 2015-10-01 |
| JP2015173313A5 true JP2015173313A5 (en) | 2017-02-23 |
| JP6274919B2 JP6274919B2 (en) | 2018-02-07 |
Family
ID=54260405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014047510A Active JP6274919B2 (en) | 2014-03-11 | 2014-03-11 | Temperature control circuit of crystal oscillator with thermostatic chamber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6274919B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559070A (en) * | 2016-10-18 | 2017-04-05 | 北京无线电计量测试研究所 | A kind of constant-temperature crystal oscillator |
| WO2019049071A1 (en) * | 2017-09-08 | 2019-03-14 | Rakon Limited | A temperature stabilized device with accelerated response to power supply variations |
| CN114089803B (en) * | 2022-01-19 | 2022-05-03 | 唯捷创芯(天津)电子技术股份有限公司 | Power detection circuit with temperature compensation function and radio frequency front end module thereof |
| CN114545998B (en) * | 2022-04-27 | 2022-07-19 | 成都世源频控技术股份有限公司 | Self-adaptive protection temperature control circuit of constant temperature crystal oscillator and implementation method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001117645A (en) * | 1999-10-18 | 2001-04-27 | Toyo Commun Equip Co Ltd | Temperature control circuit |
| JP2005117093A (en) * | 2003-10-02 | 2005-04-28 | Toyo Commun Equip Co Ltd | Temperature control circuit and high stability crystal oscillator employing the same |
| JP4273948B2 (en) * | 2003-12-09 | 2009-06-03 | エプソントヨコム株式会社 | Highly stable piezoelectric oscillator |
| JP5218169B2 (en) * | 2009-03-11 | 2013-06-26 | 株式会社大真空 | Piezoelectric oscillator and method for measuring ambient temperature of this piezoelectric oscillator |
-
2014
- 2014-03-11 JP JP2014047510A patent/JP6274919B2/en active Active
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