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What else can I help you with?
What is negative feedback in an amplifier?
feedback that reduces gain to help stabilize amplifier operation. gain is easy and cheap to get, stability isn't. its a tradeoff. so amplifier is deliberately designed with much more gain than needed and negative feedback sacrifices some of that gain to stabilize it.
What is the effect of emitter resistance in common emitter amplifier?
The gain of a common-emitter amplifier is collector resistor divided by emitter resistor, or hFe, whichever is less. Since hFe depends on temperature, designing the amplifier to be dependent on resistance ratio makes it more stable. As such, the emitter resistance serves to stabilize the amplifier.
How can I reduce or eliminate distortion on my amplifier?
To reduce or eliminate distortion on your amplifier, you can try the following steps: Ensure that the amplifier is not being overdriven by adjusting the input levels. Use high-quality audio cables to minimize interference. Check and adjust the settings on the amplifier to ensure they are appropriate for the audio source. Keep the amplifier well-ventilated to prevent overheating, which can cause distortion. Consider using a power conditioner to stabilize the power supply and reduce electrical interference.
What is operating point instability and need of stabilization?
A: And system or amplifier may have instability as some point due to external or internal function therefore intervention is needed to stabilize the system at that particular point of operation.
Why need to stabilize amplifier?
the function of amplifier is to keep amplifying .............that is to keep multiplying the input with input to obtain larger output. hence , if this process is carried on indefinately then the system at a certain stage will not be able to retain its stability coz high of high power or output .thus it is necessary to stabalize by it by using. limter ' or threshold vaue
What happens if by pass capacitor is not present in the amplifier?
If a bypass capacitor is not present in an amplifier, the gain may be reduced due to increased emitter resistance, which can negatively affect the amplifier's frequency response. This could lead to poor performance, particularly in AC signal amplification, as the capacitor typically helps to stabilize the biasing and improve AC gain by providing a low impedance path for AC signals. Additionally, the absence of the bypass capacitor may result in unwanted feedback and reduced overall efficiency of the amplifier circuit.
Who is more gain amplifier cascaded amplifier or darlington amplifier?
Darlington amplifier has more gain when compared to cascade amplifier .
How does swamping resistor in a common emitter stabilize the voltage gain and reduce distortion?
In a common emitter amplifier, a swamping resistor is added in the emitter leg to stabilize the voltage gain by providing negative feedback. This feedback counteracts variations in transistor parameters and temperature changes, leading to a more consistent gain. Additionally, by reducing the gain sensitivity to load variations, the swamping resistor helps minimize distortion in the output signal, resulting in a cleaner amplification of the input signal. Overall, it enhances the linearity and stability of the amplifier's performance.
what are the types of biological amplifier?
1.differential amplifier 2.operational amplifier 3.instrumentation amplifier 4.chopper amplifier 5.isolation amplier
What is current series feedback amplifier and its uses?
current series feedback amplifier=series parallel feedback amplifier or voltage to current amplifier,or TRANS CONDUCTANCE AMPLIFIER.
Why negative feedback amplifier is preferred to positive feedback amplifier?
The negative feedback tends to stabilize the circuit; positive feedback would make it more unstable. For example, the "beta" of a transistor OF THE SAME SERIES - this is basically the amplification factor - may vary between 100 and 1000. With negative feedback, the circuit is hardly affected by these changes in beta - at the cost of a reduced amplification.
What is selective amplifier?
Selective amplifier is an RF amplifier which selects particular frequency and amplifier so it can operate at fixed frequency.
