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    • 1. 发明授权
    • Oven controlled crystal oscillator for high stability
    • 烤箱控制晶体振荡器具有高稳定性
    • US07023291B2
    • 2006-04-04
    • US10946890
    • 2004-09-22
    • Hiroshi KatoManabu ItoTakeshi Uchida
    • Hiroshi KatoManabu ItoTakeshi Uchida
    • H03B5/32
    • H05K1/0201G05D23/19H03B5/04H03B5/36H05K1/181H05K3/301H05K2201/10022H05K2201/10068H05K2201/10151H05K2201/10515H05K2201/10606
    • To provide a highly stable crystal oscillator having increased thermal efficiency. The highly stable crystal oscillator comprises; a thermostat mainframe which maintains the temperature of a crystal resonator including a resonator container for sealing a crystal piece constant, an oscillating element which constitutes an oscillation circuit together with said crystal resonator, a temperature control element which controls the temperature inside of said thermostat mainframe, and a circuit board mounted with said thermostat mainframe, said oscillating element, and said temperature control element. The construction is such that a heat generating chip resistor and a highly heat sensitive element having a higher temperature dependency, among said oscillating element and said temperature control element, are arranged on one principal plane of said circuit board, and said heat generating chip resistor, said highly heat sensitive element, and said thermostat mainframe are directly heat bonded by a thermo-conductive material.
    • 提供具有增加的热效率的高度稳定的晶体振荡器。 高度稳定的晶体振荡器包括: 恒温器主机,其保持包括用于密封晶体片的谐振器容器的晶体谐振器的温度,与所述晶体谐振器一起构成振荡电路的振荡元件,控制所述恒温器主机内部的温度的温度控制元件, 以及安装有所述恒温器主机,所述振荡元件和所述温度控制元件的电路板。 该结构使得在所述振荡元件和所述温度控制元件之中具有较高温度依赖性的发热芯片电阻器和高热敏元件被布置在所述电路板的一个主平面上,并且所述发热芯片电阻器, 所述高热敏元件,并且所述恒温器主机通过热导材料直接热粘合。
    • 3. 发明授权
    • Control circuit for thermostatic oven in oven controlled crystal oscillator
    • 恒温烤箱控制晶体振荡器控制电路
    • US08026460B2
    • 2011-09-27
    • US12219304
    • 2008-07-18
    • Manabu ItoTakeshi Uchida
    • Manabu ItoTakeshi Uchida
    • H05B1/00H03B1/00
    • H03L1/028
    • Provided is a control circuit for a thermostatic oven in an oven controlled crystal oscillator, which is capable of further improving stability of an oscillation frequency. A control circuit in which a thermistor whose resistance value changes according to a temperature outputs a signal according to the ambient temperature of the thermostatic oven inside the oscillator, an operational amplifier outputs a signal according to a difference between the output of the thermistor and a reference signal, a power transistor amplifies the output of the operational amplifier, and a heater generates heat based on a collector voltage of the power transistor, is provided with a temperature sensor circuit having a transistor with a base to which the output of the operational amplifier is input. The control circuit outputs a collector voltage of the transistor as an internal temperature signal which changes according to a temperature inside the oscillator.
    • 本发明提供一种能够进一步提高振荡频率稳定性的炉控晶体振荡器中的恒温炉的控制电路。 其中电阻值根据温度变化的热敏电阻根据振荡器内的恒温箱的环境温度输出信号的控制电路,运算放大器根据热敏电阻的输出和参考电压之间的差输出信号 功率晶体管放大运算放大器的输出,并且加热器基于功率晶体管的集电极电压产生热量,设置有具有晶体管的温度传感器电路,该晶体管具有基极,运算放大器的输出为 输入。 控制电路输出晶体管的集电极电压作为根据振荡器内的温度而变化的内部温度信号。
    • 4. 发明申请
    • Control circuit for thermostatic oven in oven controlled crystal oscillator
    • 恒温烤箱控制晶体振荡器控制电路
    • US20090020517A1
    • 2009-01-22
    • US12219304
    • 2008-07-18
    • Manabu ItoTakeshi Uchida
    • Manabu ItoTakeshi Uchida
    • H05B1/00
    • H03L1/028
    • Provided is a control circuit for a thermostatic oven in an oven controlled crystal oscillator, which is capable of further improving stability of an oscillation frequency. A control circuit in which a thermistor whose resistance value changes according to a temperature outputs a signal according to the ambient temperature of the thermostatic oven inside the oscillator, an operational amplifier outputs a signal according to a difference between the output of the thermistor and a reference signal, a power transistor amplifies the output of the operational amplifier, and a heater generates heat based on a collector voltage of the power transistor, is provided with a temperature sensor circuit having a transistor with a base to which the output of the operational amplifier is input. The control circuit outputs a collector voltage of the transistor as an internal temperature signal which changes according to a temperature inside the oscillator.
    • 本发明提供一种能够进一步提高振荡频率稳定性的炉控晶体振荡器中的恒温炉的控制电路。 其中电阻值根据温度变化的热敏电阻根据振荡器内的恒温箱的环境温度输出信号的控制电路,运算放大器根据热敏电阻的输出和参考电压之间的差输出信号 功率晶体管放大运算放大器的输出,并且加热器基于功率晶体管的集电极电压产生热量,设置有具有晶体管的温度传感器电路,该晶体管具有基极,运算放大器的输出为 输入。 控制电路输出晶体管的集电极电压作为根据振荡器内的温度而变化的内部温度信号。
    • 7. 发明申请
    • Constant temperature type crystal oscillator for high stability
    • 恒温型晶体振荡器,稳定性高
    • US20070057742A1
    • 2007-03-15
    • US11518768
    • 2006-09-11
    • Hiroyuki MitomeManabu ItoTakeshi Uchida
    • Hiroyuki MitomeManabu ItoTakeshi Uchida
    • H03B5/32
    • H03B5/04H05K1/0201H05K1/0212H05K2201/10022H05K2201/10075H05K2201/10166H05K2203/165
    • A constant temperature oscillator which comprises: a crystal oscillator that is provided upright on a circuit board, and which comprises a plurality of lead wires extending out from a bottom face of an oscillator container in which a crystal piece is hermetically sealed; an oscillation element arranged on the circuit board and configuring an oscillation circuit in conjunction with the crystal oscillator; and a temperature control element including at least a heating chip resistance and a thermistor, arranged on the circuit board, and configuring a temperature control circuit that keeps an operating temperature of the crystal oscillator constant; and which is provided with a heat transfer plate between the heating chip resistance and the bottom face of the oscillator container, wherein, the heat transfer plate has a notch into which the heating chip resistance is fitted, and, a heat sink lies between the heat transfer plate and the heating chip resistance and closely contacts with them. In the constant temperature oscillator of the present invention, instead of a constant temperature oven having a large heat capacity which is conventionally used to keep constant temperature, the heat transfer plate made from a metal plate of a high heat transfer coefficient is adopted as a heat transfer structure. Thus, an object of the invention is to provide a constant temperature oscillator in which the heat efficiency is improved and that deals with thinning.
    • 一种恒温振荡器,包括:竖直设置在电路板上的晶体振荡器,其包括从振荡器容器的底面延伸出的多根引线,其中晶体片被气密地密封; 布置在电路板上并与晶体振荡器配合的振荡电路的振荡元件; 以及设置在所述电路基板上的至少具有加热芯片电阻和热敏电阻的温度控制元件,以及构成使所述晶体振荡器的工作温度保持恒定的温度控制电路; 并且在加热芯片电阻和振荡器容器的底面之间设置有传热板,其中,传热板具有加热芯片电阻被安装到其中的凹口,并且散热器位于热量 转印板和加热芯片的电阻并与其紧密接触。 在本发明的恒温振荡器中,代替常规用于保持恒温的具有大的热容的恒温烘箱,采用由传热系数高的金属板制成的传热板作为热 转移结构。 因此,本发明的目的是提供一种恒温振荡器,其中热效率提高并且处理变薄。
    • 8. 发明申请
    • Constant temperature type crystal oscillator
    • US20050258913A1
    • 2005-11-24
    • US11129959
    • 2005-05-16
    • Manabu ItoMinoru FukudaTetuo KudoTakeshi Uchida
    • Manabu ItoMinoru FukudaTetuo KudoTakeshi Uchida
    • H03B5/04H03B5/36H03L1/04H05K1/02H05K3/30H03B1/00
    • H03B5/36H03B5/04H03L1/04H05K1/0212H05K1/0243H05K3/306H05K2201/062H05K2201/09063H05K2201/10022H05K2201/10068H05K2201/10151H05K2201/10522H05K2201/2036
    • The present invention is one where, in a lead wire led-out type crystal oscillator of constant temperature type for high stability, comprising: a heat supply body that supplies heat to a crystal resonator from which a plurality of lead wires are led out, to maintain the temperature constant; an oscillating element that constitutes an oscillating circuit together with the crystal resonator; a temperature control element that constitutes a temperature control circuit for controlling the temperature of the crystal resonator; and a circuit board for mounting the heat supply body, the oscillating element, and the temperature control element, and through which lead wires of the crystal resonator are passed through for mounting, the heat supply body comprises: a heat conducting plate which has through-holes for the lead wires and is mounted on the circuit board, and which faces, and is directly thermally joined to, the crystal resonator; and a chip resistor for heating which is mounted on the circuit board adjacent to the heat conducting plate, and is thermally joined to the heat conducting plate. As a result, a lead wire led-out type crystal oscillator of constant temperature type for high stability wherein the structure is simplified, and in particular the height dimension is reduced can be provided. Moreover, the present invention is a constant temperature type surface mounting type crystal oscillator which uses a crystal resonator for surface mounting which is mounted on the circuit board together with the oscillating elements and temperature control elements, and is constructed such that the crystal resonator is arranged on a ceramic substrate, and at least a chip resistor for heat generation and a highly temperature-dependent highly heat sensitive element are arranged on the ceramic substrate. The structure is such that the crystal resonator is arranged on one principal plane of the ceramic substrate, and the chip resistor and the temperature sensitive element are arranged on the other principal plane of the ceramic substrate, and the other principal plane of the ceramic substrate is positioned facing one principal plane of the circuit board, and heat conductive resin is interposed between the chip resistor and the circuit board. A surface mounted crystal oscillator of constant temperature type in which miniaturization is advanced, and the structure is simplified, is provided.