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    • 5. 发明专利
    • Crystal oscillating circuit
    • 水晶振荡电路
    • JPS58213509A
    • 1983-12-12
    • JP9642282
    • 1982-06-04
    • Matsushita Electric Ind Co Ltd
    • HIURA SHIGEYOSHI
    • H03B5/32H03B1/00H03B5/36
    • H03B5/366H03B2200/0048H03B2200/0056H03B2201/0258
    • PURPOSE:To obtain plural precise and stable oscillation frequency by setting the bias of an oscillation transistor (TR) to the optimum oscillation conditions of respective crystal oscillators and using the setting resistor also as a selecting resistor for a crystal oscillator to be required. CONSTITUTION:When a changeover switch 1 is turned to the earth side, a switching TR3 is turned off, a switching diode 10 is forwardly biased by resistors 4, 6, 11 and the other switching diode 9 is reversely biased to select a crystal oscillator 8. Simultaneously, the bias voltage of an oscillation TR14 is determined by the resistors 4, 6, 11 and the diode 10. When the changeover switch 1 is turned to the power supply side on the other hand, the switching diode 9 is forwardly biased by the resistors 5, 11 and the switching diode 10 is reversely biased to select a crystal oscillator 7. Consequently, the bias voltage of the oscillation TR14 is determined by the resistors 5, 11 and the diode 9.
    • 目的:通过将振荡晶体管(TR)的偏置设置为各个晶体振荡器的最佳振荡条件并使用设置电阻器作为要求的晶体振荡器的选择电阻,来获得多个精确和稳定的振荡频率。 构成:当切换开关1转到地侧时,开关TR3截止,开关二极管10被电阻4,6,11向前偏置,另一个开关二极管9反向偏置以选择晶体振荡器8 同时,振荡TR14的偏置电压由电阻器4,6,11和二极管10确定。另一方面,当转换开关1转到电源侧时,开关二极管9被向前偏置 电阻器5,11和开关二极管10被反向偏置以选择晶体振荡器7.因此,振荡TR14的偏置电压由电阻器5,11和二极管9确定。
    • 7. 发明专利
    • Oscillation circuit, vibration device, electronic apparatus, mobile unit, and vibration device adjustment method and sensitivity adjustment circuit
    • 振荡电路,振动装置,电子装置,移动装置以及振动装置调整方法和灵敏度调整电路
    • JP2014072715A
    • 2014-04-21
    • JP2012217440
    • 2012-09-28
    • Seiko Epson Corpセイコーエプソン株式会社
    • ITASAKA YOSUKE
    • H03B5/32
    • H03L7/099H03B5/362H03B5/364H03B2201/0258H03J2200/10H03L1/028
    • PROBLEM TO BE SOLVED: To provide an oscillation circuit, a vibration device, an electronic apparatus, a mobile unit, and a vibration device adjustment method and sensitivity adjustment circuit capable of adjusting the sensitivity of frequency control voltage and correcting a variation in the sensitivity of frequency control voltage with higher accuracy than possible with prior art.SOLUTION: An oscillation circuit 1 comprises: an T1 terminal; a T2 terminal; a variable capacitance element 20 connected at one end to the T1 terminal and varying in capacitance value according to a frequency control signal; a variable capacitance element 22 connected at one end to the T2 terminal and varying in capacitance value according to a frequency control signal; a load capacitance circuit 30 connected to the T1 terminal; and a load capacitance circuit 20 connected to the T2 terminal, thereby causing an oscillation element 3 to oscillate at a frequency according to the frequency control signal. The oscillation circuit 1 is able to adjust the capacitance value of the load capacitance circuit 30, the capacitance value of a load capacitance circuit 40, a reference voltage VREFB (potential at the T1 terminal), and a reference voltage VREFC (potential at the T2 terminal) according to set information.
    • 要解决的问题:提供一种振荡电路,振动装置,电子设备,移动单元以及振动装置调节方法和灵敏度调节电路,其能够调节频率控制电压的灵敏度并校正灵敏度的变化 频率控制电压比现有技术更高的精度。解决方案:振荡电路1包括:T1端子; 一个T2终端; 可变电容元件20,其一端连接到T1端子,并且根据频率控制信号而变化为电容值; 可变电容元件22,其一端连接到T2端子,并根据频率控制信号而变化为电容值; 连接到T1端子的负载电容电路30; 以及与T2端子连接的负载电容电路20,由此使振荡元件3根据频率控制信号以频率振荡。 振荡电路1能够调整负载电容电路30的电容值,负载电容电路40的电容值,基准电压VREFB(T1端子的电位)以及基准电压VREFC(T2的电位 终端)根据设置信息。