公开(公告)号：US4817189A

公开(公告)日：1989-03-28

申请号：US139847

申请日：1987-12-29

申请人： Heinz Pfizenmaier ,  Ewald Schmidt

发明人： Heinz Pfizenmaier ,  Ewald Schmidt

IPC分类号： H01F27/00 ,  H01F17/00 ,  H01F17/04 ,  H01F19/04 ,  H01F19/06 ,  H01G4/40 ,  H03H7/09 ,  H05K1/02 ,  H05K1/16 ,  H04H1/02 ,  H01P5/16

CPC分类号： H03H7/09 ,  H01F17/00 ,  H01F17/0006 ,  H01F17/04 ,  H05K1/165 ,  H05K1/0237 ,  H05K1/162 ,  H05K2201/086 ,  H05K2201/09063 ,  H05K2201/09672

摘要： A directional H.F. broadband transformer made by a printed circuit technique includes an insulating support carrying a two-hole ferrite core. A planar coil arrangement includes two web spirals wound around outer legs of the core and each being coupled to an elongated web arranged in the same plane and passing through a corresponding hole of the core. The two elongated webs are formed with an input terminal, an output terminal and a tap terminal of equal impedance. An isolated conductive layer mounted above the webs on the insulating support is capacitively coupled with the coil arrangement and with a ground layer to reduce values of series connected distributed capacitors resulting between respective webs and the ground layer.

摘要翻译： 通过印刷电路技术制造的方向性H.F.宽带变压器包括承载两孔铁氧体磁芯的绝缘支架。 平面线圈装置包括缠绕在芯的外腿周围的两个腹板螺旋，并且每个腹板螺旋联接到布置在同一平面中并穿过芯的相应孔的细长腹板。 两个细长腹板形成有输入端子，输出端子和等阻抗的抽头端子。 安装在绝缘支架上的腹板上方的隔离导电层与线圈装置电容耦合并具有接地层，以减小在相应腹板和接地层之间产生的串联连接的分布式电容器的值。

公开(公告)号：US4536719A

公开(公告)日：1985-08-20

申请号：US346047

申请日：1982-01-28

申请人： Helmut Baum ,  Heinz Pfizenmaier ,  Ewald Schmidt ,  Franz Strauss

发明人： Helmut Baum ,  Heinz Pfizenmaier ,  Ewald Schmidt ,  Franz Strauss

IPC分类号： G01L9/10 ,  G01D5/20 ,  G01L9/00 ,  H03B5/18 ,  H03B21/00

CPC分类号： H03B5/1847 ,  G01L9/007

摘要： An inductive pressure sensor is proposed which has at least one coil embodying a frequency-determining part of an oscillator and disposed at a distance from a diaphragm which is deflectable in accordance with pressure. When pressure is exerted on the diaphragm, the inductance of the coil and thus the oscillator frequency are shifted. The coil is a flat, spiral element and the diaphragm has a surface of highly conductive or ferrite material. It is further provided that two oscillators of identical design and having corresponding coils are used, operating under identical thermal conditions. Either one oscillator operates at a fixed frequency, so that both absolute-pressure measurements and differential-pressure measurements relative to ambient pressure can be made, or else the two oscillators can be detunable in accordance with pressure, so that differential-pressure measurements between two media can be made. The output signal is then obtained by mixing. The oscillators are preferably embodied as thin-film elements.

摘要翻译： PCT No.PCT / EP81 / 00073 Sec。 371日期1982年1月28日 102（e）日期1982年1月28日PCT Filed 1981年6月12日PCT公布。 公开号WO82 / 01067 日本1982年4月1日提出了一种感应压力传感器，其具有至少一个体现振荡器的频率确定部分的线圈，并且设置在与隔膜相距一定距离处，该隔膜可根据压力偏转。 当压力施加在隔膜上时，线圈的电感以及振荡器频率发生偏移。 线圈是平的螺旋形元件，并且隔膜具有高导电性或铁氧体材料的表面。 还提供使用具有相同设计并具有相应线圈的两个振荡器，在相同的热条件下工作。 一个振荡器以固定频率运行，从而可以进行相对于环境压力的绝对压力测量和差压测量，或者两个振荡器可以根据压力失调，以便两个振荡器之间的差压测量 可以制作媒体。 然后通过混合获得输出信号。 振荡器优选地被实施为薄膜元件。