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categoryهندسة كهربائية schoolبكالوريوس event_available2026-07-14

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A circuit design will be done for the amplifier stage of a mechatronics system. This circuit has two stages. First stage specifications: Voltage divider with common emitter type, voltage gain:10, npn transistor. Second stage specifications: Voltage divider with common emitter type, voltage gain:20, npn transistor. The connection between the two stages is provided by a 1:1 transformer. Power supplies are 12 Volts for the stages. It is recommended that the element values are selected for approximate analysis. npn transistors that is used are same. Their beta values are 50. V=0.7 V. Other design criteria are determined by designer. According to these design consideration: a. Draw the overall circuit. b. In the middle band frequency region, draw r model of this circuit. c. Determine total voltage gain of overall circuit as parametric. d. Determine component values in accordance with design criteria. r. model of a common emitter transistor (r: ignored) βι

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