Patent ID: 8970264
Filing Date: 2015-03-03
Classification: G01R,H03F

Abstract:
1. An analog isolation device comprising a primary part having an input adapted to receive an input signal and a secondary part separated from the primary part by an electrical isolation barrier and having an output for delivering an output signal reproducing the input signal; the primary part and the secondary part including a high-frequency channel having a low cut-off frequency and configured to receive the input signal in the primary part and to produce a high-frequency component in the secondary part from the input signal, and a low-frequency channel having a high cut-off frequency and configured to receive the input signal in the primary part and to produce a low-frequency component in the secondary part from the input signal, in order to form the output signal from the high-frequency and low-frequency components; the device being characterized by a control circuit configured to receive, in the primary part, a setpoint signal representative of the input signal and a so-called image signal representative of the output signal, and to apply in the high-frequency and/or low-frequency channel a correction signal as a function of the difference between the image signal and the setpoint signal in order to cause that difference to tend towards zero.