Is collector current more than emitter current?

Some of the electrons combine with the majority charge carrier holes present in the base and most of the electrons reach the collector, crossing the collector-base junction. This implies that collector current is always less than the emitter current due to the reason (b).

Is emitter current greater than collector current?

We know that the concentration of the impurities in the collector is slightly less than the concentration in the emitter. Hence, even if you apply the battery at the junction of the collector and the base in forward bias, the emitter current will always be greater than the collector current.

Why is the collector current always less than emitter current?

In a transistor the collector current is always less than the emitter current because, collector side is reverse - biased and the emitter side is forward biased. a few electrons are lost in the base and only remaining ones reach the collector. collector being reverse biased, attracts less electrons.

Is collector current greater than base current?

The Base current and Collector current both enter the transistor (for an NPN, for a PNP all currents are in the opposite direction) in the same direction and since the current leaving the transistor at the emitter must be the sum of the two (Kirchhoff's current law) the emitter current is always greater than either the ...

Is the collector current the same as the emitter current?

The sum of collector current and base current equals emitter current. The input and output signals are in phase. This configuration works as non-inverting amplifier output. This circuit is mostly used for impedance matching.

Emitter, Base

Which configuration has highest current gain?

The Common Emitter (CE) Configuration

The common emitter amplifier configuration produces the highest current and power gain of all the three bipolar transistor configurations.

How is CB and CC current gain related?

The current gain for a CB configuration is called Alpha, ( α ). In a BJT amplifier the emitter current is always greater than the collector current as I_E = I_B + I_C, the current gain (α) of the amplifier must therefore be less than one (unity) as I_C is always less than I_E by the value of I_B.

Which of the transistor current is always largest?

The emitter current IE is always the largest one. The base current IB is always the smallest. The collector current IC and emitter current IE are relatively close in magnitude.

Why does collector current increases with increase in base current?

Hello, an increase in base current means more bias to the transistor which further means collector current will also increase but till the limiting value of the transistor parameters.

Why collector current is quite large?

Collector Current

It increases for larger emitter currents because the larger number of electrons injected into the base exceeds the available holes for recombination so the fraction which recombine to produce base current delines even further.

Why the collector region is physically made larger than emitter region in a transistor?

In most transistors, the collector region is made physically larger than the emitter region because it has to dissipate much greater power.

What is meant by zero signal collector current?

When no signal is applied, a DC current I C will flow in the collector circuit due to the battery. This is known as zero signal collector current. The value of zero signal collector current should be at least equal to the maximum collector current due to AC signal alone.

Is the base region much thinner or much wider than the collector and emitter regions?

Transistors have three sections namely – the emitter, the base, and the collector. The base is much thinner than the emitter, and the collector is comparatively wider than both. The emitter is heavily doped so that it can inject large number of charge carriers for current conduction.

Which element has biggest size in transistor?

In which configuration current gain of an amplifier is low?

Detailed Solution. The configuration in which the current gain of the transistor amplifier is lower is a common base.

What is the ratio of IC to IE?

26. What is the ratio of IC to IE? Solution: 27.

What happens to the collector current If emitter current increases while no base voltage is applied?

Explanation: When no voltage is provided at the base then no current passes from emitter to collector, so even if very high potential difference is applied at the emitter collector junction, no current flows through it.

What happens when the collector current is increased in a transistor?

As the temperature of a transistor increases, the collector current will increase because: Intrinsic semiconductor currrent between the collector and base increases with temperature. Its flow through the biasing resistors drives the base more positive, increasing forward bias on the base-emitter diode.

When base region has larger with the collector current increases?

Solution : When base region has larger width electron-hole combination in base region will increase, resulting increase in base current `I_(b)`. As `I_(e)=I_(b)+I_(c)`, so there will be decrease in collector current `I_(c)`.

Which part of a transistor carries the most current?

The common emitter amplifier configuration produces the highest current and power gain of all the three bipolar transistor configurations which is why this type of configuration is the most commonly used circuit for transistor based amplifiers.

Which is the largest current in the bipolar transistor?

In a BJT, the largest current flow occurs in the emitter. Explanation: Because the emitter terminal has the biggest area as compared to that of collector and base terminals.

What current is the largest in BJT?

In a BJT , the largest current flow occurs in the emitter.

Why is CE preferred over CB and CC?

Common emitter circuit is preferred over a common base circuit in amplifiers because the resistance of the common emitter circuit is much less than that of the common base circuit. Also the power gain in the common emitter circuit is much higher than that in a common base circuit.

How CE configuration is better than CC and CB?

CE amplifier has a high input impedance and lower output impedance than CB amplifier. The voltage gain and power gain are also high in CE amplifier and hence this is mostly used in Audio amplifiers.

Why CE is preferred over CB and CC configuration?

Answer. The CE configuration provides both High Current and Voltage gain unlike other configurations like CC (High current gain but voltage gain less than unity i.e 1) and CB (High voltage gain but current gain less than unity).