16 Frequency Response - BJT & FET Frequency Response 1...

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1 BJT & FET Frequency Response
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2 Hi – Fi amplifier circuit design analysis frequency response transistor pn - diode n / p – type semiconductor field-effect transistor npn / pnp transistor semiconductor pn – diode applications low / high frequency response
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3 Filter Circuits Filter Response Amplifier Circuits Amplifier Response
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4 Frequency Response :- it is the manner in which the device responses to changes in signal frequency. output voltage function of input signal frequency
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5 A typical amplifiers frequency response, showing gain versus frequency Midband range – the frequency range over with the gain is more or less constant (“flat”), and the gain in that range is designated A m . f 1 , f 2 - cutoff frequency, voltage gain = 2 max A = 0.707 A max = 0.707 A m - half-power point f 1 - f 2 - bandwidth of the amplifier The points on the graph where the gain is 0.707 A m are often called half-power points , and the cut-off frequencies are sometimes called half-power frequencies
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This note was uploaded on 01/11/2011 for the course EE 2106 taught by Professor Ytchow during the Spring '07 term at City University of Hong Kong.

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16 Frequency Response - BJT & FET Frequency Response 1...

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