A common-emitter transistor amplifier has a base current charge of 15 microamperes and a collector current charge of 200 microamperes. The load resistance is 50000 ohms with an input resistance of 1000 ohms.
Calculate the AC alpha, AC beta, AC voltage gain and power gain of this circuit.
2007-02-05 06:30:25 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
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A common-emitter transistor amplifier has a base current change of 15 microamperes and a collector current change of 200 microamperes. The load resistance is 50000 ohms with an input resistance of 1000 ohms.
Calculate the AC alpha, AC beta, AC voltage gain and power gain of this circuit.
2007-02-05 09:05:45 · update #1
You are only given DC conditions. You cannot calculate ac characteristics unless you know the parasitics (capacitances etc) of the device and what frequency you're running at. By the way, you have a pretty lousy device. It only has a beta of 13.3. By the way, microamperes are currents and not charge.
2007-02-05 06:36:54 · answer #1 · answered by Gene 7 · 0⤊ 0⤋