FIELD: electricity.
SUBSTANCE: scheme provides for variation of passive component values in electronic circuits. Passive components may be selected in the range from standard resistors, capacitors and inductances to complex structures, such lines of transmission and volume resonators. Selection of value and its variations may be either done dynamically as scheme operates, or as a simultaneous part of manufacturing process determined by requirements of a specific application. Digital-analog converter (DAC) scheme is used for digital input of data of value selection and for controlled selection of value with permission of this value depending on permitting property of DAC. Alternative version of realisation is provided for operation at high frequencies.
EFFECT: improved control over accuracy of parametres or accurately specified values of component characteristics or working characteristics and variation of their values as a result of component ageing, history of operation and variation of environmental conditions.
14 cl, 28 dwg
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