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1.发明授权High precision voltage-to-current converter, particularly for low supply voltages 失效高精度电压 - 电流转换器，特别适用于低电源电压
公开(公告)号：US4647839A
公开(公告)日：1987-03-03
申请号：US578035
申请日：1984-02-08
申请人： Marco Siligoni , Pietro Consiglio
发明人： Marco Siligoni , Pietro Consiglio
CPC分类号： H03F3/45071
摘要： The common terminals of the two opposite transistors of a differential stage with an input signal represented by the voltage applied between the bases of the two transistors are connected to ground through two further transistors controlled by the current which passes through the above-mentioned transistors. The output signal is represented by the current which passes through one of said further transistors.
摘要翻译： 具有由施加在两个晶体管的基极之间的电压表示的输入信号的差分级的两个相对晶体管的公共端子通过由通过上述晶体管的电流控制的另外两个晶体管连接到地。 输出信号由通过其中一个所述另外的晶体管的电流表示。
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公开(公告)号：US4756022A
公开(公告)日：1988-07-05
申请号：US790971
申请日：1985-10-24
申请人： Marco Siligoni , Pietro Consiglio
发明人： Marco Siligoni , Pietro Consiglio
摘要： An integrated circuit for the transmission of telephone signals is designed so as to be inserted in a speech circuit of a subscriber's telephone set and includes a threshold comparator having first and second input terminals coupled to the terminals of a two-wire telephone line and an output terminal connected to a point of the signal path of the circuit. The threshold of this comparator is set such that when the voltage at the terminals of the line drops to a predetermined value, which is not lower than the minimum voltage value required to ensure the correct operation of all the components of the circuit, it generates an output signal used to limit the amplitude of the negative peaks of the waveforms of the transmitted signals.
摘要翻译： 用于传输电话信号的集成电路被设计成插入用户电话机的语音电路中，并且包括具有耦合到两线电话线的终端的第一和第二输入端的阈值比较器和输出 端子连接到电路的信号路径的一点。 该比较器的阈值被设定为使得当线路端子处的电压下降到不低于确保电路的所有部件的正确操作所需的最小电压值的预定值时，它产生 输出信号用于限制发送信号的波形的负峰值的幅度。
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公开(公告)号：US4502016A
公开(公告)日：1985-02-26
申请号：US407785
申请日：1982-08-13
申请人： Marco Siligoni , Pietro Consiglio
发明人： Marco Siligoni , Pietro Consiglio
CPC分类号： H04M1/6016
摘要： A final bridge stage for a receiver audio amplifier, which can be monolithically integrated, consists of two pairs of complementary bipolar transistors. The collectors of the transistors of each of the transistor pairs are connected together to form two terminals to which a transducer is connected. The transistor emitters of NPN type and PNP type transistors are respectively connected to the negative pole and, through a constant current generator, to the positive pole of a supply voltage generator. The constant current generator consists of a small resistor to which a constant voltage is applied by means of a suitable circuit. The bases of the bridge transistors are connected to the signal source by means of suitable circuits. The signal source controls similar transistors in phase opposition, while at the same time controlling the complementary transistors in phase opposition.
摘要翻译： 接收机音频放大器的最终桥接阶段可以单片集成，由两对互补双极晶体管组成。 每个晶体管对的晶体管的集电极连接在一起以形成两个端子，换能器连接到该端子。 NPN型和PNP型晶体管的晶体管发射极分别连接到负极，并通过恒流发生器连接到电源电压发生器的正极。 恒定电流发生器由一个小电阻器组成，通过合适的电路向其施加恒定的电压。 桥式晶体管的基极通过合适的电路连接到信号源。 信号源控制相位相反的相似晶体管，同时控制相位相反的互补晶体管。
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4.发明授权Monolithically integratable telephone circuit for supplying ringing signals to a subscriber's telephone line and for detecting an off the hook condition during ringing 失效用于向用户电话线提供振铃信号并用于在振铃期间检测脱钩状态的单片可整合电话电路
公开(公告)号：US4797917A
公开(公告)日：1989-01-10
申请号：US79157
申请日：1987-07-29
申请人： Mauro Pasetti , Marco Siligoni
发明人： Mauro Pasetti , Marco Siligoni
CPC分类号： H04M19/026
摘要： A telephone circuit, which may be monolithically integrated, for supplying ringing signals to a subscriber's line and for detecting an off the hook condition during ringing includes a circuit for supplying ringing signals coupled to exchange control components for generating a constant frequency sinusoidal signal which gives rise to the ringing signals and an enabling circuit, controlled by the exchange components, for enabling the supplying of the ringing signals to the line and for activating a circuit for detecting a direct current on the line. The circuit for detecting a direct current on the line supplies a signal to a circuit for controlling the detection of an off the hook condition, and which supplies an inhibiting signal for the enabling circuit and check, only after a predetermined time, whether the circuit for detecting a direct current on the line is still supplying a signal and for generating a signal informing the exchange components that the set has been off the hook. The circuit also includes a circuit which amplifies the ringing signals and simultaneously supplies the telephone line. A circuit for generating timing signals synchronizes the operation of the enabling circuit and the circuit which controls the detection of the off the hook condition, and also the supplying of ringing signals to the line, during the times in which the sinusoidal signal generated by the exchange control components has a zero amplitude.
摘要翻译： 可以单片集成的用于向用户线路提供振铃信号并用于在振铃期间检测关闭状态的电话电路包括用于提供耦合到交换控制组件的振铃信号的电路，用于产生产生恒定频率正弦信号 到振铃信号和由交换部件控制的使能电路，用于使得能够向线路提供振铃信号并激活用于检测线路上的直流电流的电路。 用于检测线路上的直流电路的电路将信号提供给用于控制脱钩状态的检测的电路，并且仅在预定时间之后提供用于使能电路的禁止信号，并且检查用于 检测线路上的直流电仍然是提供一个信号，并产生一个通知交换机组件该组件已经脱钩的信号。 电路还包括放大振铃信号并同时提供电话线路的电路。 用于产生定时信号的电路在由交换产生的正弦信号的时间期间同步使能电路和控制检测脱钩状态的电路的操作，以及向线路提供振铃信号 控制组件具有零幅度。
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5.发明授权
公开(公告)号：US4782507A
公开(公告)日：1988-11-01
申请号：US841789
申请日：1986-03-20
申请人： Marco Siligoni , Ferdinando Lari
发明人： Marco Siligoni , Ferdinando Lari
CPC分类号： H04M3/2272
摘要： A circuit, which may be monolithically integrated, for measuring longitudinal and transverse currents in a two-wire transmission line, includes first and second current mirror circuits of a first type, each having an input branch and first and second output branches. The measuring circuit also includes third, fourth and fifth current mirror circuits, each having an input branch and an output branch, and first and second currents mirror circuits of a second type, each having first and second input branches and first and second output branches. The input branches of the first and second current mirror circuits of the first type and the first input branches of the first and second current mirror circuits of the second type are used as input terminals for coupling to the line. The first and second current mirror circuits of the first type are both connected to the third current mirror circuit and are respectively connected to the first and second current mirror circuits of the second type, which are both connected to the fourth current mirror circuit. The second current mirror circuit of the second type is connected to the fifth current mirror circuit whose output the first output of the first current mirror circuit of the second type are connected together to form a first output terminal. The output of the third and the fourth current mirror circuits are connected together to form a second output terminal.
摘要翻译： 可以单片集成用于测量双线传输线中的纵向和横向电流的电路包括第一类型的第一和第二电流镜电路，每个具有输入分支和第一和第二输出分支。 测量电路还包括第三，第四和第五电流镜电路，每个具有输入支路和输出支路，以及第一和第二电流镜像电路，其具有第一和第二输入支路以及第一和第二输出支路。 第一类型的第一和第二电流镜电路的输入支路和第二类型的第一和第二电流镜电路的第一输入支路用作用于耦合到线路的输入端子。 第一类型的第一和第二电流镜电路都连接到第三电流镜电路，并且分别连接到第二类型的第一和第二电流镜电路，它们均连接到第四电流镜电路。 第二类型的第二电流镜电路连接到第五电流镜电路，其第二类型的第一电流镜电路的第一输出的输出连接在一起以形成第一输出端。 第三和第四电流镜电路的输出连接在一起以形成第二输出端。
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公开(公告)号：US4721920A
公开(公告)日：1988-01-26
申请号：US901301
申请日：1986-08-27
申请人： Vanni Poletto , Marco Siligoni
发明人： Vanni Poletto , Marco Siligoni
摘要： The broad-band integrator uses bipolar transistors with single low-value integration capacitor, that is why it is easy to integrate. A bias circuit, which can be integrated, allows both the gain-bandwidth product (G*B) and the absolute values of the currents in the transistors to be programmed by two external resistors. A plurality of integrators, typically sixteen, can be connected to the same bias circuit thanks to their small power consumption.
摘要翻译： 宽带积分器使用具有单个低值积分电容器的双极晶体管，因此易于集成。 可以集成的偏置电路允许增益带宽乘积（G * B）和晶体管中电流的绝对值由两个外部电阻器编程。 多个积分器，通常为十六个，由于其小功率消耗，可以连接到相同的偏置电路。
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公开(公告)号：US3973180A
公开(公告)日：1976-08-03
申请号：US627332
申请日：1975-10-30
申请人： Rinaldo Graziadei , Marco Siligoni
发明人： Rinaldo Graziadei , Marco Siligoni
摘要： Two cascaded capacitors, one in series and the other in shunt with a load, are connected across a source of amplitude-modulated oscillations with interposition of a small resistance, preferably the forward resistance of a series diode. The junction (A) of that resistance with the series capacitor is connected to the emitter of a transistor whose collector is energized with a high driving voltage (positive in the case of an NPN transistor) and whose base is tied to a tap on a voltage divider inserted between that collector and the opposite, usually grounded source terminal. The section of the voltage divider between the base and ground may consist of the forward resistance of a single diode, designed to balance the base/emitter threshold of the transistor whereby the aforementioned junction (A) is at ground potential when the source voltage peaks with a polarity opposite that of the collector potential. A biasing battery may be inserted between the voltage divider and ground to provide a voltage pedestal of the same polarity as the collector potential.
摘要翻译： 串联的两个级联电容器和一个负载分流的级联电容器跨越幅度调制振荡源连接，插入一个小电阻，最好是串联二极管的正向电阻。 与串联电容器的电阻的结（A）连接到集电极以高驱动电压（NPN晶体管的情况下为正）并且其基极连接到电压上的抽头的晶体管的发射极 分压器插在该收集器和相对的通常接地的源极端子之间。 基极和地之间的分压器的部分可以由单个二极管的正向电阻组成，用于平衡晶体管的基极/发射极阈值，由此当源电压峰值时，上述结（A）处于地电位， 极性与集电极电位相反。 偏置电池可以插在分压器和接地之间，以提供与集电极电位相同极性的电压基座。
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公开(公告)号：US5315653A
公开(公告)日：1994-05-24
申请号：US880213
申请日：1992-05-05
CPC分类号： H04M19/005
摘要： An electronic interface circuit between a telephone subscriber line and a telephone main exchange is disclosed which forms, with the main exchange battery, a supply bridge for the telephone line, with limitation of the line current to a predetermined threshold value. The voltage/current characteristic of the supply bridge is balanced for lower values of the line current than the threshold current and is unbalanced whenever the line current attains said threshold current.
摘要翻译： 公开了电话用户线路和电话主交换机之间的电子接口电路，其与主交换电池形成用于电话线路的供电桥，线路电流的限制为预定阈值。 电源电桥的电压/电流特性与线路电流的值相比阈值电流平衡，每当线电流达到所述阈值电流时，电压/电流特性就会不平衡。
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9.发明授权
公开(公告)号：US4800589A
公开(公告)日：1989-01-24
申请号：US109435
申请日：1987-10-16
申请人： Marco Siligoni , Vanni Poletto
发明人： Marco Siligoni , Vanni Poletto
IPC分类号： H04M19/00
CPC分类号： H04M19/001
摘要： A Subscriber Line Interface Circuit (SLIC) having a voltage regulator for application thereto of a DC supply voltage V.sub.B and connected at the output terminals to an audio transmission line to provide a line current I.sub.L and voltage V.sub.L for a given resistance load R.sub.L on the line, is provided with a control circuit which, by picking up appropriate current and voltage values from the interface circuit, outputs a voltage value which is the equal of the difference between an optimum supply voltage V.sub.BF and the supply voltage V.sub.B. The control circuit output is connected to the voltage regulator to minimize the voltage V.sub.BFK applied to the interface circuit as the transmission line resistance load R.sub.L varies, thus minimizing the power dissipated through the interface circuit.
摘要翻译： 一种用户线路接口电路（SLIC），具有用于施加直流电源电压VB并且在输出端连接到音频传输线的电压调节器，以为线路上的给定电阻负载RL提供线路电流IL和电压VL 设置有控制电路，通过从接口电路拾取适当的电流和电压值，输出与最佳电源电压VBF和电源电压VB之间的差等于的电压值。 控制电路输出连接到电压调节器，以使传输线电阻负载RL变化时施加到接口电路的电压VBFK最小化，从而最小化通过接口电路消耗的功率。
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10.发明授权Monolithically integratable telephone circuit for generating control signals for displaying telephone charges 失效用于产生显示电话费用的控制信号的单片可积分电话电路
公开(公告)号：US4638122A
公开(公告)日：1987-01-20
申请号：US731167
申请日：1985-05-06
CPC分类号： H04M15/00
摘要： A telephone circuit which may be monolithically integrated, for generating control signals for displaying the telephone charges to a telephone user, is coupled to a AC voltage signal generator having a predetermined amplitude and frequency which are constant over time. The circuit includes a voltage generator for generating voltage signals which are spaced over time and have a trapezoidal pulse waveshape. A multiplier circuit calculates the product of the signals supplied by the two generators and supplies a signal which is sent to the speech circuit of the subscriber's line and is added to the speech (i.e.--conversation) signals. The circuit also includes a circuit for receiving an image signal of the overall signal adapted to the telephone line; a high-pass filter for eliminating the speech signal components from the image signal; a rectifier circuit for rectifying the filtered signal and a comparator for comparing the rectified signal with a reference signal. If the amplitude of the rectified signal is greater than the amplitude of the reference signal, the comparator generates a signal designed to stop the increase in the level of the trapezoidal pulse signals generated by the voltage generator thereby regulating the amplitude of the trapezoidal pulse signals.
摘要翻译： 可以单片集成的用于产生用于向电话用户显示电话费用的控制信号的电话电路被耦合到具有一定时间长度的预定幅度和频率的AC电压信号发生器。 该电路包括用于产生电压信号的电压发生器，其随时间间隔并具有梯形脉冲波形。 乘法器电路计算由两个发生器提供的信号的乘积，并提供发送到用户线路的语音电路并被添加到语音（即会话）信号的信号。 电路还包括用于接收适合于电话线的整体信号的图像信号的电路; 用于从图像信号中消除语音信号分量的高通滤波器; 用于整流滤波信号的整流电路和用于将整流信号与参考信号进行比较的比较器。 如果整流信号的幅度大于参考信号的振幅，则比较器产生一个信号，该信号被设计成停止由电压发生器产生的梯形脉冲信号的电平的增加，从而调节梯形脉冲信号的幅度。
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