What happens to collector current as collector voltage increases?

What happens to collector current as collector voltage increases?

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. However, if you try to push more current to the base, collector current would no more increase but the transistor may break down.

What is the voltage drop between collector and emitter?

emitter collector voltage (v ce) is the voltage drop between collector and emitter terminal which is maximum when collector current is zero. when voltage vcc is increased keeping base current constant collector current increases than constant but v ce increases until forward breakdown does not happen.

What is the relation between collector current and emitter current?

Generally, the current that flows from the emitter to the collector or vice versa is the base current times the DC current gain (hFE). Note, however, that hFE varies with the collector-emitter voltage (VCE).

What happens to the collector current if the 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.

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 is the effect on collector current of increasing emitter bias?

The current flowing from the emitter, IE (which is a combination of IC + IB) causes a voltage drop to appear across RE in such a direction, that it reverse biases the base-emitter junction. So if the emitter current increases, due to an increase in collector current, voltage drop I*RE also increases.

What is the typical voltage drop in volts across the collector and emitter VCE of a BJT when in saturation?

A general-purpose transistor will drop about . 1 to . 3 volts across the collector/emitter terminals (VCE(sat); see datasheet) when in saturation mode (fully on).

Can collector current be cut off by reducing base current?

collector current is reduced because electrons from emitter to base and electrons from collector to base both are cancel out some of electrons enter from emitter to collector because emitter is heavily doped.

Why is Collector current more than base current?

Answer: Explanation: Base is much narrower and thinner than collectors,hence the majority of charge carriers are received by collector. Hence,collector current is greater than base current.

Why does collector current increase with temperature?

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 effect on collector current Ic of increasing emitter bias?

Collector-Feedback Bias If the emitter current were to increase, the voltage drop across RC increases, decreasing VC, decreasing IB fed back to the base. This, in turn, decreases the emitter current, correcting the original increase. Write a KVL equation about the loop containing the battery, RC, RB, and the VBE drop.

Why emitter is forward biased and collector is reverse biased?

As shown in the above figure, the emitter to base junction is forward biased and the collector to base junction is reverse biased. Forward bias on the emitter to base junction causes the electrons to flow from N type emitter towards the bias. This condition formulates the emitter current (IE).

What is the difference between collector voltage and emitter voltage?

The collector voltage, ( Vc ) must be greater and positive with respect to the emitter voltage, ( Ve ) to allow current to flow through the transistor between the collector-emitter junctions.

What is the relationship between collector current and base current?

Therefore, the collector current is related to the emitter current which is in turn a function of the B-E voltage. The voltage between two terminals controls the current through the third terminal. This is the basic principle of the BJT The collector current and the base current are related by

What is the voltage drop of a transistor?

The voltage drop depends on whether or not the transistor is restricting the current I ce. If the current going into the base is high enough, and the collector current is restricted by another component (resistor / load) to well within the limits of the transistor, the voltage drop is going to be fairly small (0.1-0.2 V).

What is a BJT transistor?

Transistors: Bipolar Junction Transistors (BJT) General configuration and definitions The transistor is the main building block “element” of electronics. It is a semiconductor device and it comes in two general types: the Bipolar Junction Transistor (BJT) and the Field Effect Transistor (FET).