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If the input power is 375 milliwatts and the output power is 1.79 watts What would be the dB gain of this amplifier circuit?
Wiki User
∙ 14y ago
If you're doing anything with amplifier circuits, you really need to understand dB and be able to calculate it on your own. Here is everything you need to know about dB: The definition. Please memorize this: dB gain = 10 log [ (final power) divided by (original power) ] In your example: Original power = 375 mW = 0.375 W Final power = 1.79 W (final) / (original) = ( 1.79 / 0.375 ) = 4.7733 log ( 4.7733 ) = 0.678 Gain = 10 times the log = 6.78 dB
Wiki User
∙ 14y ago
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Why clipping should be accounted for in designing amplifier circuit?
A: If an amplifier can be subjected to either input or output overdrive then clipping of both is desirable to insure safety margin and insure amplifier recovery in a minimum time
When a PNP transistor is connected in a circuit in the manner it can be used as a power amplifier because?
the output voltage will be much larger than the input voltage
Why does amplifier gain reduce?
Since we know that the amplifier gain is given by A=Output voltage/input voltage (where A is the amplifier gain) So, it can be written as output voltage=A*input voltage, so when the output part increases gain increases but when input part increases gain decreases
What is buffer amplifier and its applications?
A buffer amplifier is a type of operational amplifier that amplifies your input signal with a gain of 1 (so your output will be identical to your input, voltage-wise). Buffer amplifiers are used commonly due to having a very high input impedance. This means that loading effects (external factors that your circuit has to deal with) like large currents that could mess with your circuit otherwise, are avoided. A buffer amplifier is often used as the first stage of a circuit because it effectively isolates your circuit from loading effects.
Input resistance and output resistance of Voltage series feedback amplifier?
output resistance decreases and input resistance increases
What does a jack do in an amplifier circuit?
A jack is a connector socket designed for the insertion of a plug. The plug can connect input, output, or auxiliary devices to the amplifier circuit.
What does jack do in an amplifier circuit?
A jack is a connector socket designed for the insertion of a plug. The plug can connect input, output, or auxiliary devices to the amplifier circuit.
How does the inverting amplifier differs from voltage follower circuit?
altough voltage follower circuit provides output voltage which is in phase to input voltage as in noninverting amplifier but in unamplified form.
How does the non-inverting amplifier differ from voltage follower circuit?
altough voltage follower circuit provides output voltage which is in phase to input voltage as in noninverting amplifier but in unamplified form.
How does the non inverting amplifier differs from voltage follower circuit?
altough voltage follower circuit provides output voltage which is in phase to input voltage as in noninverting amplifier but in unamplified form.
How can an amplifier become an oscillator?
An amplifier can become and oscillator by adding positive feedback from the output back to the input. Positive feedback means that the phase of the signal fed back to the input is the same as the phase of the output signal. In the case of a high frequency oscillator, a tuned circuit (inductor and capacitor) or a quartz crystal in the input circuit will determine the frequency of oscillation.
Why clipping should be accounted for in designing amplifier circuit?
A: If an amplifier can be subjected to either input or output overdrive then clipping of both is desirable to insure safety margin and insure amplifier recovery in a minimum time
What is non inverting amplifier?
The amplifier whose output is inphase with it input means if we consider voltage amplification then there is zero phase shift in input and output
When a PNP transistor is connected in a circuit in the manner it can be used as a power amplifier because?
the output voltage will be much larger than the input voltage
Why does amplifier gain reduce?
Since we know that the amplifier gain is given by A=Output voltage/input voltage (where A is the amplifier gain) So, it can be written as output voltage=A*input voltage, so when the output part increases gain increases but when input part increases gain decreases
What is buffer amplifier and its applications?
A buffer amplifier is a type of operational amplifier that amplifies your input signal with a gain of 1 (so your output will be identical to your input, voltage-wise). Buffer amplifiers are used commonly due to having a very high input impedance. This means that loading effects (external factors that your circuit has to deal with) like large currents that could mess with your circuit otherwise, are avoided. A buffer amplifier is often used as the first stage of a circuit because it effectively isolates your circuit from loading effects.
Are amplifiers input or output devices?
An amplifier is both an input and output device. An amplifier, as its name suggests, amplifies a signal, meaning that it makes it stronger. An amplifier takes something as input, like maybe a sound signal, and its output is a more powerful (or louder) version of the same signal.
