The output voltage of a BJT amplifier decreases at high frequency due to the impact of Parasitic/Intrinsic capacitors.

Here's why:

1. A BJT (Bipolar Junction Transistor) amplifier is a type of amplifier that uses bipolar junction transistors as the main amplifying element.

2. At high frequencies, the parasitic or intrinsic capacitors within the BJT start to have an effect. These capacitors are inherent in the construction of the transistor itself.

3. These capacitors cause a phase shift and attenuation at high frequencies. This is because the reactance (opposition to change in voltage or current) of a capacitor decreases with increasing frequency.

4. As a result, at high frequencies, these parasitic capacitors start to short circuit the signal, causing the output voltage to decrease.

5. The other options listed (coupling capacitor, base and collector resistor, bypass capacitor) can also affect the frequency response of a BJT amplifier, but they are not the primary reason for the decrease in output voltage at high frequencies.

Question

The output voltage of a BJT amplifier decreases at high frequency due to the impact of Parasitic/Intrinsic capacitors.

Here's why:

1. A BJT (Bipolar Junction Transistor) amplifier is a type of amplifier that uses bipolar junction transistors as the main amplifying element.

2. At high frequencies, the parasitic or intrinsic capacitors within the BJT start to have an effect. These capacitors are inherent in the construction of the transistor itself.

3. These capacitors cause a phase shift and attenuation at high frequencies. This is because the reactance (opposition to change in voltage or current) of a capacitor decreases with increasing frequency.

4. As a result, at high frequencies, these parasitic capacitors start to short circuit the signal, causing the output voltage to decrease.

5. The other options listed (coupling capacitor, base and collector resistor, bypass capacitor) can also affect the frequency response of a BJT amplifier, but they are not the primary reason for the decrease in output voltage at high frequencies.

Knowee AI · Accepted Answer

The output voltage of a BJT amplifier decreases at high frequency due to the impact of Parasitic/Intrinsic capacitors.

Here's why:

1. A BJT (Bipolar Junction Transistor) amplifier is a type of amplifier that uses bipolar junction transistors as the main amplifying element.

2. At high frequencies, the parasitic or intrinsic capacitors within the BJT start to have an effect. These capacitors are inherent in the construction of the transistor itself.

3. These capacitors cause a phase shift and attenuation at high frequencies. This is because the reactance (opposition to change in voltage or current) of a capacitor decreases with increasing frequency.

4. As a result, at high frequencies, these parasitic capacitors start to short circuit the signal, causing the output voltage to decrease.

5. The other options listed (coupling capacitor, base and collector resistor, bypass capacitor) can also affect the frequency response of a BJT amplifier, but they are not the primary reason for the decrease in output voltage at high frequencies.

The output voltage of a BJT amplifier decreases at high frequency due to the impact of________________Coupling capacitorParasitic/Intrinsic capacitorsBase and collector resistorBypass capacitor

Question

Solution

Similar Questions

Upgrade your grade with Knowee