公开(公告)号：US4030041A

公开(公告)日：1977-06-14

申请号：US608726

申请日：1975-08-28

申请人： Toshihiko Sasaki

发明人： Toshihiko Sasaki

IPC分类号： H03F3/387 ,  H03F3/38

CPC分类号： H03F3/387

摘要： An analog isolator includes a circuit wherein a power transformer has a primary winding for connection to an A.C. source, a first and second power take-off secondary windings and a first and second signal secondary windings. The A.C. signal of the first signal secondary winding is compared with an input signal to provide cross-over pulses. Those pulses are applied to control an isolator device such as a photocoupler. The output signal from the photocoupler is applied as gate control signals to control the selective gating of the signals from the second signal secondary winding. The selectively gated signals are applied either to a sample-and-hold arrangement or to an integrating smoothing circuit to provide effectively a reconstruction of the input signal but conductively isolated from the input circuit.

摘要翻译： 模拟隔离器包括电路，其中电力变压器具有用于连接到交流电源，第一和第二电力输出次级绕组以及第一和第二信号次级绕组的初级绕组。 将第一信号次级绕组的交流信号与输入信号进行比较，以提供交叉脉冲。 施加这些脉冲以控制诸如光电耦合器之类的隔离器装置。 作为栅极控制信号，来自光电耦合器的输出信号被施加以控制来自第二信号次级绕组的信号的选择性选通。 选择性选通的信号被施加到采样保持装置或积分平滑电路，以有效地提供输入信号的重建，但是与输入电路导通地隔离。