公开(公告)号：US4501933A

公开(公告)日：1985-02-26

申请号：US393088

申请日：1982-06-28

申请人： Marco Siligoni ,  Nazareno Rossetti

发明人： Marco Siligoni ,  Nazareno Rossetti

IPC分类号： H04M1/00 ,  H02M7/219 ,  H04M19/08 ,  H04M1/74

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

摘要： A transistor bridge rectifier circuit, which is capable of being monolithically integrated, is designed to connect the electronic circuits in a user's telephone set to a two-wire telephone line. The circuit includes a transistor bridge with a "Graetz bridge" circuit arrangement, a current generator, a pair of current mirror circuits connected thereto, which alternately conduct according to the polarity of the line, and a pair of controlled current gain transistors, each controlled by the output of one of the two current mirror circuits. The transistors belonging to the opposite sides of the bridge, the bases of which are respectively connected to the emitter and collector of the same controlled current gain transistor, are biased with the same base current which flows through the controlled current gain transistor.

摘要翻译： 能够单片集成的晶体管桥式整流电路被设计成将用户电话机中的电子电路连接到双线电话线。 该电路包括具有“Graetz桥”电路布置的晶体管桥，电流发生器，连接到其上的一对电流镜电路，其根据线极性交替导电，以及一对受控电流增益晶体管，每个受控电流增益晶体管被控制 通过两个电流镜电路之一的输出。 属于桥的相对侧的晶体管的基极分别连接到相同受控电流增益晶体管的发射极和集电极，并以相同的基极电流偏置，该基极电流流过受控电流增益晶体管。