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What is a common base NPN amplifier?
A common base NPN amplifier is used for high frequency applications as the base minimize oscillations at high frequency, separates the input and output. In a common base NPN amplifier the voltage gain is high, relatively low input impedance and high output impedance compared to the common collector.
Is a microphone output or input?
input. The microphone gives a signal to the computer/radio/whatever you're using. it is input because when you speak into it,it gets in the amplifier and the amplifier processes it to came out as sound through the speaker
What is the theory of voltage series feedback amplifier?
In a Voltage Shunt feedback Amplifier, the feedback signal voltage is given to base of transistor in shunt through a feedback resistor.This Shunt connection decreases the input input impedance and voltage feedback decreases the output impedance. In this amplifier input is current and output is voltage. Thus Transresistance is stabilized.Input and Output impedances are reduced by a factor of 'D'(desensitivity factor). Advantages: 1)Gain independent of device parameters. 2)Bandwidth increases. 3)Noise and non-Linear distortion decrease. 4)Prevents Loading effect. 5)Acts as good source for the next stage.
Microphone input or output?
A microphone has a voltage output and an acoustical input. Only the sound wave can move the diaphragm of the microphone and a voltage signal comes out. That goes to to an amplifier and to a loudspeaker.
since input or output device are usually much slower than the processor it is proper to discuss input or output transfer rate without considering the speed of input or output device?
NO
What is gain on guitar amps?
Gain, usually measured in decibels, is the ratio of output to input power. A more sensitive amplifier will have higher gain settings requiring less input signal.
What is cut off region of an amplifier?
Amplifiers react differently to different frequencies. The amount that an amplifier reacts is usually measured in power (decibels). At a certain frequency (usually higher frequencies) the amplifier will react (output) only 50% of the power it is given (this works out to -3dB) this is the standard cutoff frequency and the cutoff region is anywhere below -3dB on a bode plot(This is a plot which shows the frequency input versus the response. These are very common when talking about amplifier characteristics).
Why you need operational transconductance amplifier?
Usually output of an amplifier is a voltage ,...but in case of Operational Transconductance Amplifier ,Iout (current ) is the output. This feature, makes it useful for Electronic control of amplifier gain .
Is TV volume measured in dB?
All sound output can and is measured in dB (decibel's)
How does one measure guitar amps?
Guitar amps are measured in decibels while speaker output can be measured in watts. The relative wattage or output is not as important as that the sound be heard above the sound of the rest of the instruments in the band.
What is power gain of an amplifier having input gain 20watt and output of 20mwatt is?
The power gain of an amplifier having an input of 20W and an output of 20mW is 0.001. Expressed in decibels, that is a gain of -30db. (log2 0.001 * 3)If you meant an output power of 20MW (mega instead of milli), the gain is 1,000,000, or +60db.
Power gain of an amplifier having input gain of 20W and what is the output gain of 20mW?
The power gain of an amplifier having an input of 20W and an output of 20mW is 0.001. Expressed in decibels, that is a gain of -30db. (log2 0.001 * 3)If you meant an output power of 20MW (mega instead of milli), the gain is 1,000,000, or +60db.
What is the meaning of gain in an amplifier or operational amplifier. Is high gain or low gain is what we try to achieved?
There are many uses for amplifiers. Some try to achieve extremely high gain such as in a radio receiver. Many try to achieve no overall gain. Examples include mixers and filters. Some only try to achieve limited gain. Oscillators try to achieve zero gain at most frequencies but unity to very high gain at the frequency of oscillation depending on the output wave form required. Basically - everything in electronics is an amplifier. The absolute gain of am amplifier is the ratio of output signal to input signal. For voltage or current amplifiers this is usually expressed as field decibels which is 20 log (out/in). For power amplifiers the gain in decibels is 10 log (output power/input power). If the gain is less than one, the same rules apply but the decibels will turn out to be a negative quantity.
What range of decibels can be made by an electric guitar?
That would depend on the decibel range output of the amplifier used by it. A very well designed electric guitar itself without an amplifier is barely audible. A small 30W amp will maximize at around 90dB.
How do you match speaker with amp?
To match a speaker with an amplifier, ensure that the amplifier's power output (measured in watts) is compatible with the speaker's power handling capacity. Ideally, the amplifier should provide power within the speaker's recommended range, typically around 50-75% of the speaker's maximum rating for optimal performance. Additionally, match the speaker's impedance (measured in ohms) to the amplifier's output impedance to avoid damaging either component. Finally, consider the amplifier's tonal characteristics and intended use to ensure they complement each other.
How is slew rate affect on amplifier?
as it is rate of change of output voltage..so it affect amplifier output
The torque output of an engine is usually measured in the units of what?
Foot Pounds
