公开(公告)号：US4675615A

公开(公告)日：1987-06-23

申请号：US814263

申请日：1985-12-30

申请人： Donato Bramanti

发明人： Donato Bramanti

IPC分类号： G01R33/04 ,  H03F9/00 ,  G01L1/14

CPC分类号： H03F9/00 ,  G01R33/04 ,  Y10S33/13 ,  Y10S73/02

摘要： A magnetic amplifier employing a single four-legged ferrite core having orthogonally disposed through holes in the core. Biasing is provided of the magnetic core so as to provide operation in the non-linear parts of the core's hysteresis cycle. A first coil on the ferromagnetic core has an AC excitation signal applied thereto and a second coil on the core is wound orthogonally to the first coil and is adapted to have an output signal derived therefrom. A control or input current in a third coil is used to unbalance the magnetic bridge formed by the four legs, so as to produce a mutual inductance different from zero between the first and second coil. The biasing may be provided by a fourth coil or by permanent magnet means.

摘要翻译： 一种采用单芯四芯铁氧体磁芯的磁放大器，在核心中具有正交设置的通孔。 由磁芯提供偏置，以便在磁芯的磁滞循环的非线性部分提供操作。 铁磁芯上的第一线圈具有施加到其上的AC激励信号，并且芯上的第二线圈正交地缠绕到第一线圈，并且适于具有从其导出的输出信号。 使用第三线圈中的控制或输入电流来使由四条腿形成的磁桥不平衡，从而在第一和第二线圈之间产生不同于零的互感。 偏置可以由第四线圈或永久磁铁装置提供。