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What is effect on amplifier output if you increase input impedence?
Wiki User
∙ 10y ago
Impedence is synonymous with resistense. Greater the I, lesser the output
No.
First, it's *resistance* and *impedance*.
Now, if the amplifier is a current amplifier, the above makes sense. (higher Zin, less Iin for a constant Vin).
But if it's a purely voltage amplifier, it only responds to the input voltage, so the impedance (so long as it's not affecting the source/driving device) will have no effect on a purely voltage-amplifying amplifier.
Wiki User
∙ 10y ago
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Could you briefly explain the applications of FET?
Due to its *low noise *high input impedence and low output impedence FET is used in numerous applications. *Buffer ampliier *Phase shift oscillator *Integrator *Amplifier
Why the input impedence of op-Amp is very high?
An ideal amplifier will have a very high input resistance, and low output resistance. This is so it doesn't "load" the input circuitry, and can drive output circuitry. Say you hooked an op amp up to a microphone that kicked out 100mV unloaded. If you shorted out the microphone, the output would approach 0mV (very low resistance load). If you connected a very high resistance load instead, the output would remain close to 100mV. As the load becomes a smaller resistance/bigger load, the output voltage will decrease until it is no longer useful. This is because the microphone has an internal resistance that remains constant while you're varying the attached load. The voltage drop across the internal resistance will increase as current output increases, causing less of a signal to be delivered to the amplifier.
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
Why does your amplifier keep going into protection mode?
A shorted output, bad output transistor. need more info.
Am amplifier that inverts the signal between input and output is called a what?
common emitter
What is the function of a buffer amplifier in electronics?
A buffer amplifier can be used to transform high input impedence to low output impedence, or vice-versa.
What happens if a high impedence amplifier is connected to a low impedence speaker?
Scroll down to related links and look at "Interconnection of two units" and find the picture of the amplifier and the loudspeaker. Learn about "voltage bridging" - Zout < Zin. There are no power amplifiers with a high impedance output.
What is output impedence?
Newer heard the word "impedence". An output impedance is an AC resistance at the output of an electronic device.
Could you briefly explain the applications of FET?
Due to its *low noise *high input impedence and low output impedence FET is used in numerous applications. *Buffer ampliier *Phase shift oscillator *Integrator *Amplifier
Why CB amplifier preferred for high frequency than CE amplifier?
1)in cc configuration we use to get the low output impedence where as in ce we use to get the high output impedence. 2)in cc amplifier we use to have the voltage gain equal to unity where as in ce amplifier we use to have the high voltage gain. 3)in cc amplifier there is high power gai which is used for impedence matching where as in ce amplifier due to the high voltage gain the impedence matching is less impossible.
What happens if you connect 4 ohms impedance speakers which are 40 w RMS and 200w MAX to a 8 ohms and 30 w impedancece amplifier?
If the amplifier is not rated for 4 ohms impedence, you will quickly over-current the amp, burning out components. The power handling of the speaker and power output of the amplifier does not matter in this case. It must be compatible with the impedence load that you are connecting.
What effect does an amplifier have on the frequency of the signal?
A; An amplifier will have no effect on the input frequency however its output may not follow the input frequency at the hi end due to the amplifier limitations
How do you increase the power output of the kenwood ts-440s?
Use an amplifier.
Conditions for faithful amplification?
1. Signal to noise ratio should be low at the amplifier outlet. (Vaccuum tube amps are best.) 2. No distortion at the output due to the amp being overdriven. 3. Impedence matching at the input and output.
When transistor acts as an amplifier then does its output voltage increase or decrease?
That depends on both the input signal and the type of amplifier the transistor is used in.
What is the output effect and the price effect for an oligopoly?
Since P>MC for an oligopoly, the output effect is that selling one more unit at the sales price will increase profit.The price effect is that an increase in production will increase the total amount sold, which will decrease the price and decrease the profit on all other units sold.If the output effect is greater than the price effect, the owner will increase production.If the price effect is greater than the output effect, the owner will not increase production (and may even decrease production).Oligopolists will continue to increase or decrease production until these marginal effects balance.
State the application of RC coupled amplifier?
To increase the power gain ,high input impedance,low output impedance,and increase the weaken signal
