A major shortcoming of the differential operational amplifier with an unmanaged signal active load is increased value of the systematic component of the voltage offset, depending on the error in the transfer of current used current mirror. Particularly significant this error is obtained by using as simple current mirror, but the most high-circuit solutions. Proposed in the generalized structure provides a reduction of the absolute value of the voltage offset, as well as its temperature and radiation drift using current mirrors in the circuit with current transfer ratio is not equal to one. The results of computer simulation in PSpice model-integrated transistors Pulsar showed dignity developed structure in comparison with the classical. Schematic structure of the implementation of the proposed component-based analog base ABMС_1_3 crystal matrix presented in the paper.
The paper analytical method for calculation of magnetic characteristics of infinitely long circular and hollow cylindrical conductors has been proposed. The method permits: to calculate radial distribution of vector potential and induction of magnetic fields, being formed by direct current in the internal and external areas of the conductor; to determine the value of magnetic flux in the internal and external areas of the conductor; to calculate the current and flux running inductances of circular and hollow conductors; to find frequency dependence of Q-quality of cylindrical conductors and to de-fine the scales of characteristic frequencies.
The paper shows the feasibility of using a current amplifier in the filters RF and microwave ranges. By analyzing the basic structure of the second-order level sufficient conditions for the efficient use of active elements. The examples of methodological nature and formulated conclusions of practical importance.
Ircuit features of the electronics module for avalanche photodiode signal read-out, created on a basis of the specialized analog IC, are considered. Measurement re-sults of characteristics and noise depending on signal source capacity are given.
