公开(公告)号：US4507525A

公开(公告)日：1985-03-26

申请号：US460874

申请日：1983-01-25

申请人： Marco Siligoni ,  Nazzareno Rossetti

发明人： Marco Siligoni ,  Nazzareno Rossetti

IPC分类号： H02M7/21 ,  H02M7/12 ,  H02M7/219 ,  H04M19/08 ,  H04M1/74

CPC分类号： H02M7/219 ,  H04M19/08 ,  H02M2007/2195 ,  Y02B70/1408

摘要： A transistorized bridge rectifier circuit with overcurrent protection which can be integrated monolithically is used for joining to a two-wire telephone line to the electronic circuits of a telephone subscriber set connected thereto. The circuit includes a transistorized bridge having a circuit arranged in the manner of a Graetz bridge. Rather than using separate elements for overcurrent protection, the circuit uses the bridge circuit elements themselves as protection elements. Diodes or diode connected transistors are respectively connected between the base and collector of transistors in two arms of the Graetz bridge and the resultant circuit thus provides overcurrent protection without the need of additional protection elements.

摘要翻译： 具有过电流保护的晶体管桥式整流电路可以单片集成，用于将两线电话线连接到与其连接的电话用户机的电子电路。 该电路包括一个晶体管桥，其具有以Graetz桥的方式布置的电路。 电路不是使用单独的元件来实现过流保护，而是将桥式电路元件本身用作保护元件。 二极管或二极管连接的晶体管分别连接在Graetz电桥的两个臂中的晶体管的基极和集电极之间，因此得到的电路提供过流保护，而不需要额外的保护元件。

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

IPC分类号： H04M19/02 ,  H04M3/06

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。

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

IPC分类号： H04Q3/72 ,  H04M3/22 ,  G05F3/16 ,  H04M19/00

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。

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

IPC分类号： G06G7/184 ,  H03H11/04 ,  H03H11/46 ,  H03F3/45

CPC分类号： H03H11/04 ,  G06G7/184 ,  H03H11/46

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。

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

IPC分类号： H03D1/00 ,  G01R19/04 ,  G01R19/22 ,  H03D1/10 ,  H02M7/00

CPC分类号： G01R19/04 ,  G01R19/22

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。

公开(公告)号：US5315653A

公开(公告)日：1994-05-24

申请号：US880213

申请日：1992-05-05

申请人： Marco Siligoni ,  Vanni Saviotti ,  Maria L. Marcioni

发明人： Marco Siligoni ,  Vanni Saviotti ,  Maria L. Marcioni

IPC分类号： H02J1/00 ,  H04M19/00 ,  H04Q3/42

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。

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。

公开(公告)号：US4638122A

公开(公告)日：1987-01-20

申请号：US731167

申请日：1985-05-06

申请人： Marco Siligoni ,  Ferdinando Lari ,  Vanni Saviotti ,  Vittorio Comino

发明人： Marco Siligoni ,  Ferdinando Lari ,  Vanni Saviotti ,  Vittorio Comino

IPC分类号： H04M15/00 ,  H04M15/18

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。

公开(公告)号：US4293824A

公开(公告)日：1981-10-06

申请号：US90619

申请日：1979-11-02

申请人： Bruno Murari ,  Marco Siligoni

发明人： Bruno Murari ,  Marco Siligoni

IPC分类号： H03F3/45 ,  H03F3/04

CPC分类号： H03F3/45094 ,  H03F2203/45028 ,  H03F2203/45308 ,  H03F2203/45612

摘要： A linear differential amplifier comprises two main transistors of one conductivity type (e.g. PNP) having emitters connected via a common constant-current generator to an ungrounded terminal of a d-c supply whose grounded other terminal is connected to their collectors via a pair of identical resistors; the base of one of these transistors is grounded while the base of the other transistor receives an a-c input signal. An unbalanced output signal is taken off the collector of an ancillary transistor of the opposite conductivity type (NPN) which is fed from the ungrounded supply terminal through a complementary auxiliary transistor or through another constant-current generator; the emitter of this output transistor is connected directly to the collector of the second main transistor.

摘要翻译： 线性差分放大器包括具有一个导电类型（例如PNP）的两个主晶体管，其具有通过公共恒流发生器连接到d-c电源的未接地端子的发射极，其接地另一个端子经由一对相同的电阻器连接到它们的集电极; 这些晶体管之一的基极接地，而另一晶体管的基极接收a-c输入信号。 不平衡输出信号从相对导电类型（NPN）的辅助晶体管的集电极中取出，其由未接地的电源端子通过互补辅助晶体管或通过另一恒流发生器馈送; 该输出晶体管的发射极直接连接到第二主晶体管的集电极。

公开(公告)号：US4979008A

公开(公告)日：1990-12-18

申请号：US298651

申请日：1989-01-18

申请人： Marco Siligoni ,  Flavio Villa

发明人： Marco Siligoni ,  Flavio Villa

IPC分类号： H01L21/331 ,  H01L21/8222 ,  H01L27/06 ,  H01L29/08 ,  H01L29/73 ,  H01L29/732

CPC分类号： H01L29/7302 ,  H01L29/0826 ,  H01L29/7322 ,  Y10S257/914 ,  Y10S257/918

摘要： A vertical, isolated-collector transistor of the pnp type comprises an island doped similarly to the collector region and formed in the surface epitaxial layer of the transistor between that collector region and one of the isolation zones. That island extends in depth to penetrate a similarly doped intermediate region and short out the epitaxial layer included between the isolating layer and the collector region so as to suppress the effects of active parasitic junction components by holding a transistor and a silicon-controlled rectifier of parasitic types, as nesting within the structure of the vertical pnp transistor, in a cut-off state.