0
What else can I help you with?
Why is common emitter is greater than common collector?
Common-emitter gives more voltage gain because a common-collector amplifier has a voltage gain of 1. But a common-collector can have a power gain because the input impedance is much more than the output impedance.
Which transistor mode gives the inverted output?
common-emitter
What is the function of an emitter?
emitter collects output current produced in resister Wrong. An emitter in a semiconductor emits majority current carriers (electrons or holes) into the junction between it and the base..
What component develops the output signal in a common emitter amplifier?
The voltage drop across the emitter-collector junction develops the output signal with the help of a resistor or two in series. The output is 'seen' at the collector.
What is the difference between a CB amplifier and CE and emitter-follower?
I think you mean a common emitter amplifier, which is an amplifier of voltage. Emitter-follower or common collector amplifiers are used to match impedances, or to amplify power or current. The emitter-follower is a type of common emitter circuit that has a resistor between the emitter and ground. The output signal is taken from the point between the emitter and its resistor.
Why is common emitter is greater than common collector?
Common-emitter gives more voltage gain because a common-collector amplifier has a voltage gain of 1. But a common-collector can have a power gain because the input impedance is much more than the output impedance.
What is common collector?
A common collector, also known as an emitter follower, is a basic transistor amplifier configuration where the collector terminal is common to both the input and output. In this setup, the input signal is applied between the base and the emitter, while the output is taken from the emitter. This configuration provides high input impedance and low output impedance, making it useful for impedance matching and signal buffering. Additionally, it offers voltage gain close to unity, meaning the output voltage closely follows the input voltage.
Why emitter follower preferred to transforms as a impedance matching?
because it has high input impedance and low output impedance
Why cc configurationis also called emitter follower?
The common collector (CC) configuration is called an emitter follower because the output is taken from the emitter terminal, which "follows" the input voltage at the base. In this configuration, the emitter voltage closely tracks the base voltage, with a small voltage drop due to the base-emitter junction. This results in a high input impedance and low output impedance, making it ideal for buffering applications. The term "follower" emphasizes the way the output voltage follows the input signal.
What are common uses of a common emitter amplifier?
bcause amplification factor beta is usually ranges from 20-500 hence this configuration gives appericiable current gain as well as voltage gain at its output on the other hand in the Common Collector configuration has very high input resistance(~750 kilo ohm) & very low output resistance(~25 ohm) so the voltage gain is always less than one & its most important application is for impedance matching for drivingh from low impedance load to high impedance source
Why more current amplification in common emitter?
A bipolar transistor can be used in different configurations in linear electronic design. Most well known is the common emitter CE configuration with a base current as input signal resulting in a collector signal multiplied by the current gain factor. The second configuration is known as the emitter follower or common collector configuration. Here the input signal is in the form of a voltage between the base and the common connection. The output signal is found in the form of a voltage at the emitter with a relative low output impedance. The voltage swing at the input is almost as large at the output where the input impedance equals the product of the current gain factor and the emitter resistance. The third configuration is known as common base CB. Here the input current at the emitter almost equals the output current at the collector. The current gain is nearly equal to 1.
Which type of gain is common base configuration used to provide?
The common base configuration is primarily used to provide voltage gain. In this configuration, the input signal is applied to the emitter, while the output is taken from the collector, allowing for high-frequency applications due to its low input impedance and high output impedance. Additionally, it exhibits a near-unity current gain, making it less effective for current amplification compared to other configurations like common emitter.
What effect does the bypass capacitor have on the output impedance of the amplifier?
The quantity of specific information included in the question is exceeded only bythe quantity of vital, relevant information that's never mentioned.Are you talking vacuum-tube or transistor amplifier ? What's the configuration of theamplifier, i.e., which terminal of the active device is 'common' to input and output ?And where is the bypass capacitor in the circuit ?I'll take a wild stab and assume that you have a common-emitter amplifier, with thecapacitor bypassing the bias resistor in the emitter branch. If that's the case, thenthe resistor is supposed to be there only to set the DC Q-point, but every effect itcould have on small-signal performance would be an effect that you don't want ...it would increase the output impedance, and any impedance common to input andoutput always reduces the gain.So one of the effects of the bypass capacitor is to reduce the output impedanceof the stage.(If Dingobot comes along now and flags this for gibberish, that'll be my first cluethat after all these years, I don't actually remember this stuff too well.)
Which transistor mode gives the inverted output?
common-emitter
What is considered as the output and input terminal of the CB configaration?
In a Common Base (CB) configuration, the input terminal is the emitter, where the input signal is applied, and the output terminal is the collector, where the output signal is taken. The base terminal is common to both the input and output circuits, hence the name "common base." This configuration is known for providing high-frequency response and low input impedance.
What is the output impedance of common source amplifier circuit?
The output impedance of a common source amplifier circuit is typically high. This is because the common source amplifier uses a resistor to provide biasing, which results in a high output impedance. However, this can be mitigated by using a current source instead of a resistor for biasing.
Why output voltage in common base amplifier is in phase to input voltage?
The output of a common emitter stage is inverted, it is not out of phase.
