会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • DEVICE FOR DETERMINING THE LEVEL OF A MEDIUM IN A CONTAINER
    • 一种用于确定介质的水平在一个容器中
    • WO0161286A3
    • 2001-12-06
    • PCT/EP0101439
    • 2001-02-09
    • ENDRESS HAUSER GMBH COFLORENZ HANS JOERGWERNET ARMIN
    • FLORENZ HANS-JOERGWERNET ARMIN
    • G01F23/26
    • G01F23/265G01F23/266
    • The invention relates to a device for determining the level (F) of a medium (3) in a container (2) using a capacitive sensor (4). A voltage source which subjects the sensor (4) to a measuring frequency (fM) is provided, as is a measuring/evaluating circuit (6) which establishes the measured capacitance (CM), compares this to a predetermined capacitance value and provides the information concerning the level (F) of the medium (3) in the container (2). The aim of the invention is to increase the measuring sensitivity of a capacitive sensor (4) without increasing the sensitivity of the sensor to interfering signals. To this end, the measuring/evaluating circuit (6) has at least one inductance (L) which together with the measured capacitance (CM), forms a resonant circuit (7).
    • 本发明涉及一种装置,用于通过一个电容性探针(4),其中,电压源提供了手段在容器(2)确定的介质(3)的填充水平(F)的探针(4)(在测量频率fM )被施加,并且其中(6)提供了一种测量/计算电路,其确定所述测量电容(CM),并用一个预定的电容值和关于在容器中的介质(3)的填充水平(F)的信息进行比较(2)提供 , 本发明具有增加的电容探头(4)的测量灵敏度而不增加其对噪声的灵敏度的对象。 该目的是这样实现的,其与测量电容器(CM)形成测量/评估电路(6)的至少一个电感(L)具有串联谐振电路(7)。
    • 9. 发明专利
    • VOLTAGE REGULATOR CIRCUIT
    • CA2264437C
    • 2001-12-04
    • CA2264437
    • 1999-03-03
    • ENDRESS HAUSER GMBH CO
    • FLORENZ HANS-JOERGWERNET ARMINMEIER JUERGEN
    • G05F1/575G05F1/56
    • A voltage regulator circuit for generating a regulated output DC voltage from a non-regulated DC or AC voltage, comprises an input rectifier circuit for rectifying the non-regulated AC voltage and a series regulator, containing a gate-controllable transistor, which regulates the output voltage supplied to it by the rectifier to a first voltage value. The transistor of the series regulator is a field-effect transistor (20) which in the ON condition charges a charging capacitor (46), the charging voltage of which forms the regulated output voltage. Connected to the gate terminal (21) of the field-effect transistor is a first threshold circuit (26, 28, 30, 32) receiving the non-regulated DC voltage which applies to this gate terminal (21) a voltage turning OFF the field-effect transistor (20) as soon as the non-regulated DC voltage exceeds a predetermined threshold value. Furthermore, connected to the gate terminal (21) of the field-effect transistor (20) is a second threshold circuit (36, 38, 40, 42) receiving the regulated output DC voltage which applies to this gate terminal (21) a voltage turning OFF the field-effect transistor (20) as soon as the regulated output DC voltage exceeds a predetermined design value.