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r19ecua
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Homework Statement
I just have to calculate midband gain for a typical NPN BJT. The transistor model is a 2N3904
Have I calculated something wrong?? My gain is 0.748
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Okay, but CE = 0 is not the way to express RE being fully bypassed!r19ecua said:RE is bypassed, as all capacitors are shorted (internal are open).
So your have a large attenuator in front of your amplifier stage. Perhaps you should exclude RS from your calculations, so as to present a truer picture?Source impedance is verified as 100k ohms
Mid band gain is a measurement used in electronics to determine the amount of amplification or gain of a signal within a specific frequency range.
The mid band gain is calculated by dividing the output signal voltage by the input signal voltage, and then multiplying by the input impedance.
The frequency range for mid band gain is typically between 10Hz to 100kHz. However, this range may vary depending on the specific circuit or device being used.
Mid band gain only measures the amplification within a specific frequency range, while overall gain takes into account the entire frequency spectrum. Overall gain may be higher or lower than mid band gain, depending on the frequency response of the circuit or device.
Some factors that can affect the accuracy of mid band gain calculations include variations in component values, parasitic capacitances and inductances, and temperature changes. Additionally, the measurement equipment used and the skill of the person performing the calculations can also impact accuracy.