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    • 8. 发明申请
    • Digital input circuit
    • 数字输入电路
    • US20110114858A1
    • 2011-05-19
    • US12926439
    • 2010-11-18
    • Hiroyuki OonoTakahiro YoshidaKuniaki Matsuura
    • Hiroyuki OonoTakahiro YoshidaKuniaki Matsuura
    • G02B27/00
    • G05B19/054G05B2219/1182
    • A digital input circuit includes a pair of input terminals that an input signal of a digital voltage signal is inputted; a photocoupler for transmitting the input signal from the input terminals to an input port of a microcomputer and having one light emitting diode and one phototransistor, wherein the light emitting diode of the photocoupler is connected between the input terminals, a collector of the phototransistor is connected to a positive side of a power supply, and an emitter of the phototransistor is connected to ground via a first resistor; and a bipolar transistor provided between the ground and a second resistor, wherein a collector thereof is connected to the second resistor for pulling up the input port of the microcomputer, an emitter thereof is connected to the ground, and a base thereof is connected to a connection node between the emitter of the phototransistor and the first resistor.
    • 数字输入电路包括输入数字电压信号的输入信号的一对输入端子; 用于将输入信号从输入端子传送到微型计算机的输入端口并具有一个发光二极管和一个光电晶体管的光电耦合器,其中光电耦合器的发光二极管连接在输入端子之间,光电晶体管的集电极被连接 到电源的正极侧,并且光电晶体管的发射极经由第一电阻器接地; 设置在地与第二电阻之间的双极晶体管,其中集电极连接到第二电阻器,用于提升微型计算机的输入端口,其发射极连接到地,其基极连接到 光电晶体管的发射极与第一个电阻之间的连接节点。
    • 9. 发明申请
    • Digital output circuit
    • 数字输出电路
    • US20110121210A1
    • 2011-05-26
    • US12926535
    • 2010-11-24
    • Hiroyuki OonoTakahiro YoshidaKuniaka Matsuura
    • Hiroyuki OonoTakahiro YoshidaKuniaka Matsuura
    • G02B27/00
    • G05B19/054G05B2219/1102G05B2219/1105G05B2219/1182G05B2219/15133
    • A digital output circuit includes a photocoupler, having one light emitting diode and one phototransistor, for transmitting a digital voltage output signal to the load; an output transistor, having a control terminal, a first terminal and second terminals, for transmitting an output signal from the phototransistor to the load; and a voltage smoothing unit. Further, a first terminal of the phototransistor is connected to a power supply terminal via a first resistor and a second terminal of the phototransistor is connected to the control terminal of the output transistor. A second resistor is connected between the control terminal and the first terminal of the output transistor. The first terminal of the output transistor is connected to the common terminal and the second terminal of the output transistor is connected to the output terminal. The voltage smoothing unit is connected between the first terminal of the phototransistor and the common terminal.
    • 数字输出电路包括光电耦合器,具有一个发光二极管和一个光电晶体管,用于将数字电压输出信号传输到负载; 输出晶体管,具有控制端子,第一端子和第二端子,用于将来自光电晶体管的输出信号传输到负载; 和电压平滑单元。 此外,光电晶体管的第一端子经由第一电阻器连接到电源端子,光电晶体管的第二端子连接到输出晶体管的控制端子。 第二电阻连接在控制端和输出晶体管的第一端之间。 输出晶体管的第一端子连接到公共端子,输出晶体管的第二端子连接到输出端子。 电压平滑单元连接在光电晶体管的第一端子和公共端子之间。