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公开(公告)号：JP2005064903A
公开(公告)日：2005-03-10
申请号：JP2003292984
申请日：2003-08-13
申请人： Nf Corp , 株式会社エヌエフ回路設計ブロック
发明人： SOFUKAWA SHINGO , YAMAUCHI KAZUYUKI
摘要： PROBLEM TO BE SOLVED: To provide a broadband amplifier and an I-V converter which operates over a wide frequency range and improves the degree of design freedom.
SOLUTION: The broadband amplifier is composed of a plurality of amplifying means, i.e., a buffer A1 having a high input impedance the output of which is connected to an inverted input terminal of a current feedback type OP amplifier A2, and an operational amplifier A3 the output of which is connected to an in-phase input terminal of the OP amplifier A2. Input signals to the buffer A1 and a predetermined reference voltage are inputted to the amplifier A3.
COPYRIGHT: (C)2005,JPO&NCIPI摘要翻译： 要解决的问题：提供在宽频率范围内工作的宽带放大器和I-V转换器，并提高设计自由度。 解决方案：宽带放大器由多个放大装置组成，即具有高输入阻抗的缓冲器A1，其输出端连接到电流反馈型OP放大器A2的反相输入端， 放大器A3，其输出端连接到OP放大器A2的同相输入端。 输入到缓冲器A1的信号和预定的参考电压被输入到放大器A3。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2009085624A
公开(公告)日：2009-04-23
申请号：JP2007252286
申请日：2007-09-27
IPC分类号： G01N27/30 , C12M1/34 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To provide an electrically active stimulation measuring method capable of reducing the excitation of the electrical activity of the biotissue or neurocyte of an unintended region. SOLUTION: When an electric stimulation signal is applied to the biotissue or neurocyte using an electrode, a potential control signal, which is controlled so as to become the voltage of a potential distribution or below produced by the electric stimulation signal, is applied to the electrode present in the periphery of the electrode for applying the electric stimulation signal. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译： 要解决的问题：提供能够减少非预期区域的生物组织或神经细胞的电活动的激发的电活性刺激测量方法。 解决方案：当使用电极将电刺激信号施加到生物组织或神经细胞时，施加被控制成为由电刺激信号产生的电位分布或更低的电压的电位控制信号 到存在于用于施加电刺激信号的电极周边的电极。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2004235796A
公开(公告)日：2004-08-19
申请号：JP2003019876
申请日：2003-01-29
发明人： SOFUKAWA SHINGO , KOMURO TAKANORI
IPC分类号： H03M1/70
摘要： PROBLEM TO BE SOLVED: To improve at a low cost the gain stability of a digital/analog converter.
SOLUTION: The gain stabilizing circuit for the digital/analog converter 10 having at least one set of complementary output and at least one reference input comprises: an adder 14 connected to at least the one set of complementary output of the digital/analog converter 10 and detecting the output signals of the digital/analog converter 10 for output; and an error detector 16 inputting a signal outputted from the adder 14 and an external reference voltage, comparing the signal outputted from the adder 14 with the external reference signal to output a signal corresponding to the difference of the signal. The signal corresponding to the difference outputted from the error detector 16 is fed-back to the reference input of the digital/analog converter 10.
COPYRIGHT: (C)2004,JPO&NCIPI-
公开(公告)号：JP2013066176A
公开(公告)日：2013-04-11
申请号：JP2012189400
申请日：2012-08-30
申请人： Nf Corp , 株式会社エヌエフ回路設計ブロック
发明人： SOFUKAWA SHINGO
CPC分类号： H03F1/34 , H03F1/486 , H03F3/087 , H03F3/211 , H03F3/45475 , H03F2200/135 , H03F2200/144 , H03F2200/261 , H03F2200/36 , H03F2200/405 , H03F2200/408 , H03F2200/411 , H03F2203/45138 , H03F2203/45512 , H03F2203/45526 , H03F2203/45528 , H03F2203/45536 , H03F2203/45544 , H03F2203/45548 , H03F2203/45594 , H03F2203/45612
摘要： PROBLEM TO BE SOLVED: To provide an amplification circuit and a feedback circuit that almost eliminate shoulder characteristic degradations or peaks of frequency characteristics even on a low capacitance fixed value of feedback capacitance Cf in the event of a variation in inverting input capacitance Csin.SOLUTION: An amplification circuit includes a plurality of amplifiers individually configured for negative feedback and connected in series, and feedback means (a feedback circuit) connected to an output side of an output side amplifier and an input side of an input side amplifier both included in the plurality of amplifiers. The plurality of amplifiers include an odd number of inverting amplifiers.
摘要翻译： 要解决的问题：即使在反相输入电容Csin的变化的情况下，即使在反馈电容Cf的低电容固定值上，也提供几乎消除了频率特性的肩特性劣化或峰值的放大电路和反馈电路 。 解决方案：放大电路包括单独配置为负反馈并串联连接的多个放大器，以及连接到输出侧放大器的输出侧和输入侧放大器的输入侧的反馈装置（反馈电路） 两者都包括在多个放大器中。 多个放大器包括奇数个反相放大器。 版权所有（C）2013，JPO＆INPIT
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公开(公告)号：JP2002094336A
公开(公告)日：2002-03-29
申请号：JP2000277724
申请日：2000-09-13
发明人： SOFUKAWA SHINGO , KOMURO TAKANORI
摘要： PROBLEM TO BE SOLVED: To provide a cascade connected type amplifier that has a feedback from a final stage to an input stage and operates at a faster speed, while being simple in configuration. SOLUTION: The cascade connected type amplifier includes (N+1)-sets (here N is an integer 1 or larger) of amplifier circuits (Gin, G1, G2,..., GN) connected in cascade, a feedback circuit including resistors (Rin, R1, R2,..., RN) connected in series from an output of the final stage amplifier circuit in the amplifier circuits, connected in cascade to an input of the input stage amplifier circuit and N-sets of capacitors (CT1, CT2,..., CTN), that respectively connect connecting points of the resistors to N-sets of connecting points of the amplifier circuits.
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