In-circuit measurement of complex circuits parameters with electrical separation by iteration method

The problem of measurement of passive multi-terminal circuit parameters, components of which are multi-terminal electrical circuits, is considered. The availability of closed contours in multi-terminal circuits does not permit the use of conventional measurement methods. The defined problem can be solved using methods of electrical separation of multi-terminal circuits on separate independent multi-terminal circuits. However, known measurement methods which provide such separation by structures with balancing in a monitoring mode, do not provide sufficient measurement accuracy and are unstable. An iterative method of electrical separation of multi-terminal circuits, which is free from specified defects, is presented. A generalized algorithm of iterative balancing process of a measuring circuit is presented. The block diagram of a measuring converter, realizing this algorithm, is given.