Capacitive power supply system
    11.
    发明授权
    Capacitive power supply system 有权
    电容供电系统

    公开(公告)号:US07961486B2

    公开(公告)日:2011-06-14

    申请号:US12468373

    申请日:2009-05-19

    IPC分类号: H02M5/42 H02M7/217

    摘要: The invention relates to a power supply system (3) intended to supply power to an electrical load (C), the system comprising: two input terminals, namely a negative terminal and a positive terminal, connected to a supply mains (A) delivering an AC voltage; an input capacitor (C1) connected to one of the terminals of the system; a rectifier module (33) for generating a DC voltage on a DC bus from the AC voltage; a bus capacitor (Cb) connected between a positive line (31) and a negative line (32) of the DC bus, and upstream of the input capacitor (C1), two normally-on bidirectional semiconductor transistors (T1, T2) connected in series, fabricated in a wide-bandgap material and able to operate in current-limiting mode.

    摘要翻译: 本发明涉及一种旨在向电力负载(C)供电的供电系统(3),该系统包括:两个输入端子,即一个负极端子和一个正极端子,连接到电源(A) 交流电压; 连接到系统的一个端子的输入电容器(C1); 整流器模块(33),用于从所述AC电压产生DC总线上的DC电压; 连接在直流母线的正极线(31)和负极线(32)之间以及输入电容器(C1)上游的总线电容器(Cb),连接在两个常开双向半导体晶体管(T1,T2)上的总线电容器 系列,采用宽带隙材料制成,能够在限流模式下工作。

    Variable frequency inductive proximity sensor
    12.
    发明授权
    Variable frequency inductive proximity sensor 失效
    变频感应接近传感器

    公开(公告)号:US5508662A

    公开(公告)日:1996-04-16

    申请号:US416230

    申请日:1995-04-04

    IPC分类号: H04B5/00 G01V3/10 G01V3/11

    CPC分类号: G01V3/102

    摘要: A proximity sensor includes a coil for sensing metal objects which are part of an oscillatory circuit and an oscillator which drives the oscillatory circuit at a constant frequency. A tuning device is connected in parallel with the oscillatory circuit. The tuning device is a variable gain amplifier with feedback via an inductive or capacitive impedance.

    摘要翻译: 接近传感器包括用于感测作为振荡电路的一部分的金属物体的线圈和以恒定频率驱动振荡电路的振荡器。 调谐装置与振荡电路并联连接。 调谐装置是通过电感或电容阻抗反馈的可变增益放大器。

    Coded objects identifiable by proximity and devices for changing the
codes of these objects
    13.
    发明授权
    Coded objects identifiable by proximity and devices for changing the codes of these objects 失效
    由接近度识别的编码对象和用于更改这些对象的代码的设备

    公开(公告)号:US4857913A

    公开(公告)日:1989-08-15

    申请号:US125655

    申请日:1987-11-25

    IPC分类号: G06K1/12 G06K7/08 G06K19/07

    摘要: The invention relates to electronic badges equipping portable objects, such as plastified cards and capable of being identified at a distance by suitable readers in order to ensure operation such as the unlocking of a lock. These badges are of a passive type, that is to say supplied exclusively from the outside by inductive coupling and they are in addition of a type reprogrammable through channels, each comprising an inductive coupling (at the level of inductances) from a suitable apparatus. The circuitry for forming the binary coded identification signals of the badge comprise a dead memory, a life memory or buffer and a rapid reading and writing circuit which provides the connections between these two memories, as well as the connections between the dead memories and the reprogramming channels.

    摘要翻译: 本发明涉及装备便携式物品的电子徽章,例如塑化牌,并且能够被合适的读者远距离识别,以确保诸如解锁锁的操作。 这些徽章是无源型的,也就是说通过电感耦合专门从外部提供,并且它们是通过通道的可重新编程的类型的补充,每个通道包括来自合适装置的电感耦合(在电感水平处)。 用于形成徽章的二进制编码识别信号的电路包括死存储器,寿命存储器或缓冲器以及提供这两个存储器之间的连接的快速读写电路,以及死区和重编程之间的连接 频道

    Facsimile system for the transmission of picture
    14.
    发明授权
    Facsimile system for the transmission of picture 失效
    传真系统传输图片

    公开(公告)号:US3956578A

    公开(公告)日:1976-05-11

    申请号:US536892

    申请日:1974-12-27

    CPC分类号: H04N1/411

    摘要: This system is provided for the field of electronic facsimile transmitting of a picture and relates more particularly to the compression of data to reduce the number of bits to be transmitted at a given resolution of the picture. Compression is effected by a correlation of neighbouring points of the picture by omitting, at the transmitting end, one point in four on two adjacent lines and by restituting it at the receiving end by means of a relatively simple Boolean function which takes into account the structure of the characters used in that picture. That first compression may be combined with a second compression due to the coding of the length of a white range.

    摘要翻译: 该系统被提供用于图像的电子传真发送领域,并且更具体地涉及数据的压缩,以减少以图像的给定分辨率发送的比特数。 通过在发送端省略两个相邻行上的四个中的一个点,并且通过相对简单的布尔函数将其重新形成在接收端,压缩是通过图像的相邻点的相关来实现的,其考虑了结构 的图片中使用的字符。 由于编码白色范围的长度,第一压缩可以与第二压缩组合。

    Overvoltage protection device for an electrical circuit
    15.
    发明授权
    Overvoltage protection device for an electrical circuit 有权
    电路用过电压保护装置

    公开(公告)号:US08164874B2

    公开(公告)日:2012-04-24

    申请号:US12468534

    申请日:2009-05-19

    IPC分类号: H02H9/02

    CPC分类号: H02H9/025 H02H9/042

    摘要: An overvoltage protection device, including: an input configured to be connected to a power supply mains; an output configured to be connected to an electronic system to be protected; two bidirectional field-effect semiconductor transistors of normally-on type, connected in series between the input and the output, fabricated in a wide-bandgap material and configured to operate in current-limiting mode; and a resistor connected in parallel with the two transistors.

    摘要翻译: 一种过电压保护装置,包括:被配置为连接到电源电源的输入; 输出,被配置为连接到要被保护的电子系统; 串联连接在输入和输出之间的两个双向场效应半导体晶体管,制造在宽带隙材料中并且被配置为在限流模式下工作; 以及与两个晶体管并联连接的电阻器。

    Voltage surge protection device and electronic circuit comprising one such a device
    16.
    发明授权
    Voltage surge protection device and electronic circuit comprising one such a device 有权
    电压浪涌保护装置和包括一个这样的装置的电子电路

    公开(公告)号:US07791855B2

    公开(公告)日:2010-09-07

    申请号:US11921137

    申请日:2006-05-30

    IPC分类号: H01C7/21

    CPC分类号: H02H9/042 H02H9/025

    摘要: The voltage surge protection device comprises at least one input designed to be connected to an electric power supply system, at least one output designed to be connected to an electric circuit to be protected, and voltage surge limiting means connected between the inputs and outputs to protect said electric circuit against voltage surges able to be applied on the inputs. The voltage surge limiting means comprise bidirectional series electronic limiting means comprising at least two inputs/outputs connected in series with at least one of said inputs, and which are turned on when a low voltage drop occurs when a circulating current is lower than a current limiting value, and limiting said circulating current by increasing a voltage drop between said inputs/outputs.

    摘要翻译: 电压浪涌保护装置包括被设计为连接到电力供应系统的至少一个输入端,设计成连接到待保护电路的至少一个输出端以及连接在输入和输出端之间的电压浪涌限制装置,以保护 所述电路可以抵抗能够施加在输入端上的电压浪涌。 电压浪涌限制装置包括双向串联电子限制装置,其包括与至少一个所述输入串联连接的至少两个输入/输出,并且当循环电流低于限流电流时发生低压降时导通 值,并且通过增加所述输入/输出之间的电压降来限制所述循环电流。

    Regulated voltage two-wire detector
    17.
    发明授权
    Regulated voltage two-wire detector 失效
    稳压双线检测器

    公开(公告)号:US5345166A

    公开(公告)日:1994-09-06

    申请号:US861853

    申请日:1992-06-18

    摘要: Detector comprising a sensor and a processing circuit connected to a load by means of two wires. Two switches (I1, I2) are arranged in series in a switching circuit leg (21), the ends of which (C, D) are connected to the detector terminals and the middle point (S) to a terminal (F) of the processing circuit. When operating (I1) is conductive and (I2) determines a parallel regulation of the voltage (V) at the processing circuit (12) terminals ; when in rest position, (I1) determines a series regulation of the voltage while (I2) is blocked.

    摘要翻译: PCT No.PCT / FR91 / 00814 Sec。 371日期:1992年6月18日 102(e)日期1992年6月18日PCT 1991年10月17日PCT公布。 出版物WO92 / 07426 日期:1992年4月30日。检测器包括传感器和通过两根电线连接到负载的处理电路。 两个开关(I1,I2)串联布置在开关电路脚(21)中,其端部(C,D)连接到检测器端子和中点(S)到端子(F) 处理电路。 当操作(I1)导通时,(I2)确定处理电路(12)端子处的电压(V)的并联调节; 当处于静止位置时,(I1)在(I2)被阻塞时确定电压的串联调节。

    Device for identification by proximity
    18.
    发明授权
    Device for identification by proximity 失效
    靠近识别的装置

    公开(公告)号:US4893118A

    公开(公告)日:1990-01-09

    申请号:US125660

    申请日:1987-11-25

    IPC分类号: B61L25/04 G06K7/00 G07C9/00

    摘要: A reader identifies coded electronic badges without contact with the latter, by simple inductive coupling of inductances, the electrical supply of the badge being ensured from a voltage at high frequency F generated by the reader. The code of the badge, composed of a sequence of bits following one another at a frequency f very much less than F, is used to modulate a voltage of intermediate frequency fi comprised between f and F and the thus modulated voltage controls an electronic switch adapted to short-circuit a resonant circuit of the badge.

    摘要翻译: 阅读器通过电感的简单的电感耦合识别编码的电子徽章而不与后者接触,由读取器产生的高频F的电压确保徽章的电源。 使用以非常小于F的频率f彼此相邻的位序列组成的徽章的代码来调制f和F之间的中间频率fi的电压,并且由此调制的电压控制电子开关 使徽章的谐振电路短路。