DIGITAL AMPLIFIER WITH CONTROL USING DIRECT AND FEEDBACK LINKS

摘要

FIELD: electricity.;SUBSTANCE: amplifier contains power supply source (100) for generated output electric power, at that the amplifiers also includes: digital input adapted for receipt of digital input signal (112). At that digital input signal (112) characterises required level of output electric power, power reference generator (124) to generate analogue reference power controlled by input digital signal (112), power measurement element (142; 128) adapted to measure difference in power between output electric power provided by power supply source (100) and analogue reference power, analogue-to-digital converter (130) adapted to convert power difference to digital value of power difference (132), combinatory adapted to provide combined digital signal (136) by adding digital value of power difference (132) to digital value introduced to power reference generator (124) in order to generate analogue reference power.;EFFECT: reducing requirements to element base with simultaneous maintenance of accuracy.;12 cl, 4 dwg