专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2010041645A Operational amplifier 审中-公开
标题翻译：操作放大器
公开(公告)号：JP2010041645A
公开(公告)日：2010-02-18
申请号：JP2008205445
申请日：2008-08-08
申请人： Toshiba Corp , Toshiba Discrete Technology Kk , 東芝ディスクリートテクノロジー株式会社 , 株式会社東芝
发明人： TODA SHUJI , HASEGAWA MASAHIRO
IPC分类号： H03F3/45
摘要： PROBLEM TO BE SOLVED: To provide an operational amplifier in which the flatness of mutual conductance is improved in a wide common-mode input voltage range.
SOLUTION: The operational amplifier includes: a differential input circuit provided with first and second differential pairs and supplied with a first power supply voltage and a second power supply voltage lower than the first power supply voltage; and a control circuit capable of detecting that an FET configuring the first differential pair is operated in the case that a common-mode input voltage between the first power supply voltage and the second power supply voltage is inputted to the first and second differential pairs respectively, and adjusting the operation of an FET configuring the second differential pair so as to keep the mutual conductance of the differential input circuit at a roughly fixed value.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种在广泛的共模输入电压范围内提高互导的平坦度的运算放大器。解决方案：运算放大器包括：差分输入电路，设有第一和第二差分对，并提供第一电源电压和低于第一电源电压的第二电源电压; 以及控制电路，其能够检测在所述第一电源电压和所述第二电源电压之间的共模输入电压分别输入到所述第一和第二差分对的情况下，构成所述第一差分对的FET，以及调整构成所述第二差分对的FET的操作，以使差分输入电路的互导体保持大致固定的值。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2009003612A Feedback circuit and series regulator using it 审中-公开
标题翻译：反馈电路和系列调节器使用它
公开(公告)号：JP2009003612A
公开(公告)日：2009-01-08
申请号：JP2007162406
申请日：2007-06-20
申请人： Toshiba Corp , Toshiba Discrete Technology Kk , 東芝ディスクリートテクノロジー株式会社 , 株式会社東芝
发明人： TODAKA JUNICHI , HASEGAWA MASAHIRO
IPC分类号： G05F1/10
摘要： PROBLEM TO BE SOLVED: To provide a feedback circuit whose circuit stability is not impaired even during low-voltage output, and a series regulator using it.
SOLUTION: The series regulator is provided with an error amplifier 11 in which a non-inverting input terminal 11b is connected to a reference voltage generation circuit; a voltage dividing circuit 13 for dividing an output voltage Vo of the error amplifier 11; and a phase compensation circuit 14 having a non-inverting amplifier 15 in which an input terminal 15a is connected to a voltage dividing point of the voltage dividing circuit 13, a first impedance generation means 16 connected between an output terminal 15c of the non-inverting amplifier 15 and an inverting input terminal 11a of the error amplifier 11, and a second impedance generation means 17 connected between the voltage dividing point of the voltage dividing circuit 13 and the inverting input terminal 11a of the error amplifier 11. Even if voltage amplification degree Av1 of the non-inverting amplifier 15 is larger than one, and a feedback amount is one, a zero frequency fz of the phase compensation circuit 14 is smaller than a pole frequency fp.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种反馈电路，即使在低压输出期间其电路稳定性也不会受到影响，并且使用它的串联调节器。解决方案：串联调节器设置有误差放大器11，其中非反相输入端子11b连接到参考电压产生电路; 分压误差放大器11的输出电压Vo的分压电路13; 以及具有非反相放大器15的相位补偿电路14，其中输入端子15a连接到分压电路13的分压点，第一阻抗产生装置16连接在非反相放大器15的输出端子15c之间放大器15和误差放大器11的反相输入端子11a，以及连接在分压电路13的分压点和误差放大器11的反相输入端子11a之间的第二阻抗产生装置17.即使电压放大度非反相放大器15的Av1大于1，反馈量为1，相位补偿电路14的零频率fz小于极点频率fp。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2013038608A Bias circuit and amplification circuit 审中-公开
标题翻译：偏置电路和放大电路
公开(公告)号：JP2013038608A
公开(公告)日：2013-02-21
申请号：JP2011173344
申请日：2011-08-08
申请人： Toshiba Corp , 株式会社東芝
发明人： HASEGAWA MASAHIRO
IPC分类号： H03F3/19 , G05F3/30 , H03F1/30 , H03F3/343
摘要： PROBLEM TO BE SOLVED: To provide a bias circuit and an amplification circuit that can operate in a wide voltage range down to a low voltage and can set a temperature coefficient of a bias current.SOLUTION: The bias circuit provided includes a current generation circuit and a voltage generation circuit. The current generation circuit generates a first current on the basis of a voltage difference between forward voltages of two PN junctions different in junction area, and generates a second current having a temperature coefficient different in polarity from that of the first current on the basis of the forward voltage of the PN junction smaller in junction area of the two PN junctions. The voltage generation circuit generates a reference voltage from a current combining the first current and the second current.
摘要翻译：要解决的问题：提供一种偏压电路和放大电路，该偏置电路和放大电路可以在低电压范围内工作，并可设置偏置电流的温度系数。提供的偏置电路包括电流产生电路和电压产生电路。电流产生电路基于结区不同的两个PN结的正向电压之间的电压差产生第一电流，并且基于第一电流产生具有与第一电流的温度系数不同的温度系数的第二电流 PN结的正向电压在两个PN结的结面积较小。电压产生电路从组合第一电流和第二电流的电流产生参考电压。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2010108419A Reference voltage generating circuit and regulator using the same 审中-公开
标题翻译：参考电压发生电路和使用该电路的调节器
公开(公告)号：JP2010108419A
公开(公告)日：2010-05-13
申请号：JP2008282345
申请日：2008-10-31
申请人： Toshiba Corp , 株式会社東芝
发明人： MATSUMOTO KAZUYA , HASEGAWA MASAHIRO
IPC分类号： G05F3/24
摘要： PROBLEM TO BE SOLVED: To provide a reference voltage generating circuit capable of varying reference voltage, and to provide a regulator using the reference voltage generating circuit.
SOLUTION: The reference voltage generating circuit includes: a first insulating gate field effect transistor M1 in a depression mode, of which the first electrode is connected to a first power supply voltage input terminal 11, and the second electrode is connected to a connection node N1; a second insulating gate field effect transistor M2 in an enhance mode, of which the first electrode is connected to the connection node N1, the second electrode is connected to a second power input terminal 12, the gate is connected to the connection node N1, and the conductivity type is the same as that of the first insulating gate field effect transistor M1; and a gate voltage control means 13 which is connected between the gate of the first insulating gate field effect transistor M1 and the connection node N1 to control gate voltage Vgs1 of the first insulating gate field effect transistor M1.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供能够改变参考电压的参考电压产生电路，并提供使用该参考电压发生电路的调节器。解决方案：参考电压发生电路包括：第一绝缘栅场效应晶体管M1，其中第一电极连接到第一电源电压输入端11，第二电极连接到连接节点N1; 增强模式的第二绝缘栅场效应晶体管M2，其第一电极连接到连接节点N1，第二电极连接到第二电源输入端子12，栅极连接到连接节点N1，并且导电类型与第一绝缘栅场效应晶体管M1的导电类型相同; 以及栅极电压控制装置13，其连接在第一绝缘栅场效应晶体管M1的栅极和连接节点N1之间，以控制第一绝缘栅场效应晶体管M1的栅极电压Vgs1。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2012034335A Power detector circuit and radio device 审中-公开
标题翻译：电力检测电路和无线电设备
公开(公告)号：JP2012034335A
公开(公告)日：2012-02-16
申请号：JP2011017110
申请日：2011-01-28
申请人： Toshiba Corp , 株式会社東芝
发明人： TERAGUCHI TAKAYUKI , KOTAKI YOSHIKATSU , HOSOI SHIGEHIRO , HASEGAWA MASAHIRO , NAKAGAWA TAKAHIRO
IPC分类号： H03D1/18 , H03F3/343
CPC分类号： G01R21/10
摘要： PROBLEM TO BE SOLVED: To provide a power detector circuit and a radio device of wide dynamic range.SOLUTION: A power detector circuit 1 includes a reference voltage generating circuit 2, a square signal generating circuit 3, a detection circuit 4, and an output circuit 5. The reference voltage generating circuit 2 is inputted with a bias voltage and generates a reference voltage. The square signal generating circuit 3 is inputted with a voltage obtained by multiplexing the bias voltage with a high frequency input voltage, and outputs a signal containing a voltage which is a square of the high frequency input voltage and a high frequency signal. The detection circuit 4 includes a first calculation amplification circuit which amplifies a difference between an average value of output signal and the reference voltage by way of a first low pass filter from the output signal from the square signal generating circuit 3 and outputs it as a control voltage, and a feedback transistor which feeds back a feedback current according to the control voltage to the square signal generating circuit. The electric power of high frequency is detected based on the feedback current. The output circuit 5 outputs a voltage according to the control voltage.
摘要翻译：要解决的问题：提供功率检测器电路和宽动态范围的无线电设备。解决方案：功率检测电路1包括参考电压产生电路2，方波信号发生电路3，检测电路4和输出电路5.参考电压产生电路2被输入偏置电压并产生参考电压。向平方信号发生电路3输入通过将偏置电压与高频输入电压进行多路复用而得到的电压，并输出包含高频输入电压和高频信号的平方的电压的信号。检测电路4包括：第一计算放大电路，通过来自方波信号发生电路3的输出信号，通过第一低通滤波器放大输出信号的平均值与参考电压之间的差值，并输出作为控制电压和反馈晶体管，反馈晶体管根据控制电压向平方信号发生电路反馈反馈电流。基于反馈电流检测高频电力。输出电路5根据控制电压输出电压。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JPS61296820A CURRENT MIRROR CIRCUIT FOR SWITCH 失效
公开(公告)号：JPS61296820A
公开(公告)日：1986-12-27
申请号：JP13823485
申请日：1985-06-25
申请人： TOSHIBA CORP
发明人： HASEGAWA MASAHIRO
IPC分类号： H03K17/62 , H03K17/567
摘要： PURPOSE:To decrease current consumption at off-state by a MOS transistor (TR) in series with each base circuit of plural bipolar TRs for current driving and applying switch control to the MOS TRs in response to the digital input. CONSTITUTION:A constant current circuit 11 and an NPN TR 12 are connected in series between a a power terminal and a common terminal, a P-channel enhancement TR 13 is connected between the collector and base of the TR 12, the gate is connected to common to form a current supply circuit. A base current is fed to the constant current TR 12 through an on-state TR 13 and a constant current flows. Then switch control MOS TRs Q51-Q5n and switch output NPN TRs Q61-Q6n are subject to on/off control in response to the digital input. When the switch output is turned off, since no current flows to the TRs, less power consumption is enough.

7. 发明专利

JPS61235166A HEATING ELEMENT DRIVING CIRCUIT 失效
公开(公告)号：JPS61235166A
公开(公告)日：1986-10-20
申请号：JP7788185
申请日：1985-04-12
申请人： TOSHIBA CORP
发明人： HASEGAWA MASAHIRO
IPC分类号： B41J2/35 , H03K17/60 , H04N1/23
摘要： PURPOSE:To enable a constant electric power supply which can be set at a required value if a dispersion exists in a heating element load by performing the ON/OFF control of a driving output on an electric power driving circuit, detecting the electric current and both terminal voltages of a heating element load, obtaining a detection voltage through addition after a logarithmic conversion and subjecting a voltage driving circuit to feedback control. CONSTITUTION:In a heating element driving circuit, an electric power driving circuit 2 does not generate a driving output, not allowing a load 13 to be driven through heating when no pulse signal is applied to a gate terminal 3. When a pulse signal is applied to the gate terminal 3, the electric power driving circuit 2 generates a driving output, enabling the load 13 to be driven by heating. At that time, a load power WL is detected by converting detected load current IL and a load voltage VL logarithmically and adding these. After this process, the load power WL is subjected to feedback control so that it may meet a reference power given as a reference voltage input from a driving power control terminal 9.

8. 发明专利

JPH0989943A CAPACITANCE VARIATION DETECTING CIRCUIT 失效
公开(公告)号：JPH0989943A
公开(公告)日：1997-04-04
申请号：JP24974995
申请日：1995-09-27
申请人： TOSHIBA MICRO ELECTRONICS , TOSHIBA CORP
发明人： MATSUDA MASATOSHI , HASEGAWA MASAHIRO
IPC分类号： G01R19/165 , G01R31/00
摘要： PROBLEM TO BE SOLVED: To precisely detect the variation in capacitance by applying a voltage pulse having a reversed phase to one end of a pair of variable capacitance capacitors, by connecting an inversion input of an operational amplifier to the other end, and by connecting the one end and the other end of the detecting capacitor to the inversion input and output of the amplifier connected through a switch, through respective switches. SOLUTION: Variable capacitance capacitors 101, 102 are connected at their one end to a reverse phase output of pulse oscillators 103, 104, and at their other end to an inversion input of an operational amplifier through a switch 105. A a capacitor 107 is connected at its one end to an inversion input of the operational amplifier 106 through a switch 109, and at the other end to the output of the operational amplifier 106 through a switch 110, and to the inversion input of the operational amplifier 106 through a switch 111. A switch 112 is connected between the inversion input and the output of the operational amplifier 106. Accordingly, a voltage is applied to the inversion input of the operational amplifier 106, and the charge depending upon the voltage is accumulated in the capacitor 107, thereby it is possible to output from the output of the amplifier 106.

9. 发明专利

JPH0989952A RESISTANCE DETECTING CIRCUIT 失效
公开(公告)号：JPH0989952A
公开(公告)日：1997-04-04
申请号：JP24969495
申请日：1995-09-27
申请人： TOSHIBA MICRO ELECTRONICS , TOSHIBA CORP
发明人： OKAMOTO KENJI , TAKAHASHI NOBUYUKI , HASEGAWA MASAHIRO
IPC分类号： G01L1/22 , G01B7/16 , G01D3/028 , G01R27/14
摘要： PROBLEM TO BE SOLVED: To provide a resistance detecting circuit capable of reducing offset voltage at low cost. SOLUTION: This resistance detecting circuit has a resistance element 11 having one end to which a reference voltage Vref1 is applied, a distortion detecting element having one end to which a reference voltage 0[V] is applied and the other end connected to the other end of the resistance element 1, an amplifying circuit 13 for amplifying and outputting the difference between the voltage Vp resistance-divided by the resistance element 11 and the distortion detecting element 12 and a reference voltage Vref2 , comparing circuits 15, 16, 17 for comparing the output voltage Vout of the amplifying circuit 13 with contrast voltages Vc1 , Vc2 , an updown counter 18 for changing or fixing the count value on the basis of the comparison results of the comparing circuits 15, 16, 17, and a converter 19 for converting the count value outputted by the updown counter 18 into voltage value and applying it into the (-) input terminal of the amplifying circuit 13.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式