Why does the collector current increase with the increase in reverse bias at the collector junction?

Why does the collector current increase with the increase in reverse bias at the collector junction?

So the charge carriers are electrons in the depletion region. The electric field established in this depletion region is directed from collector to base due to reverse bias. So the electron again tends to move towards the collector giving rise to collector current.

What effect does increasing collector voltage have on collector current?

It is an exponential relationship that is described by the Ebers-Moll equations. An increase in this voltage results in increased currents in both the base and the collector, and indeed, an increase in base current causes an increase in B-E voltage.

Why does the collector current of a BJT in the active region increases with increasing collector voltage for a given base current?

Why does the collector current of a BJT in the active region increases with increasing collector voltage for a given base current. Answer:In the active region as the VCE voltage is increased the depletion layer width at the CB junction increases and the effective base width reduces.

What happens if collector current increases in a collector emitter feedback circuit?

4. What happens if collector current increases in a collector emitter feedback circuit? Explanation: If the collector current VC is increased, the corresponding emitter current also increases. Which in turn causes the voltage across RE to increase.

Why are collectors reverse biased?

Collector is always reverse-biased w.r.t base so as to remove the charge carriers from the base-collector junction.

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.

What is the most important fact about the collector current?

What is the most important fact about the collector current? It is measured in milliampere. It equals the base current divided by the current gain.

When the collector current is increase in a transistor?

Why is emitter always forward biased?

The emitter is always forward biased to enable the majority carriers to cross the emitter-base junction, so that current flows through the transistor.

Why does current flow in reverse bias?

Reverse bias usually refers to how a diode is used in a circuit. If a diode is reverse biased, the voltage at the cathode is higher than that at the anode. Therefore, no current will flow until the electric field is so high that the diode breaks down.

When the collector current is increased in a transistor the reverse current is increased?

the reverse current is increased. the temperature is increased. collisions of electrons decrease.

Is the small amount of current when the base current is zero?

Explanation: In the cut off region, a small amount of collector current flows even when base current IB is zero. This is called ICEO. Since the main current is also zero, the transistor is said to be cut off.

Why does base current decrease with increase in collector to emitter?

It is not the current that decreases, it is the other way…if base current decreases, Vce increases and vice versa. Let us say, we are applying more base current, Ib is increased, due to the device gain, collector current Ic also increases, so the voltage drop across the collector resistance increases, which decreases our Vce.

What happens when the collector voltage is changed?

Base-width modulation causes both the collector current and base current of the transistor to change when the collector voltage changes. This small-signal effect means that a transistor current source does not have infinite output impedance.

Which is a parameter of the collector emitter voltage?

Collector–Emitter leakage current (ICES): This parameter determines the leakage current at the rated voltage and specific temperature when the gate is shorted to emitter. Gate–Emitter threshold voltage (VGE(th)): This parameter specifies the gate–emitter voltage range, where the IGBT is turned on to conduct the collector current.

Why does base current increase in a transistor?

3 Answers. An increase in this voltage results in increased currents in both the base and the collector, and indeed, an increase in base current causes an increase in B-E voltage. But the base and collector currents generally have a fixed ratio to each other for any particular transistor under a particular set of conditions,…