What is the relation between base emitter current and collector-emitter current in a bipolar transistor?

What is the relation between base emitter current and collector-emitter current in a bipolar transistor?

What is the relationship between the base-emitter and collector-emitter voltages of a bipolar transistor? 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 is the voltage difference between collector and emitter?

Transistor datasheets will define this voltage as CE saturation voltage VCE(sat) — a voltage from collector to emitter required for saturation. This value is usually around 0.05-0.2V.

What is breakdown voltage of BJT?

For the common-base configuration, the base is common (“grounded”) and the collector-base breakdown voltage is determined with the emitter open so, as you write, the breakdown voltage is essentially that of a PN junction.

What is the voltage between the collection and the base when the BJT is in saturation?

Assuming the emitter is at 0 Volts (or ‘ground’) the base is biased at about . 7 volts.

How is base emitter voltage calculated?

Determine the voltage drop between the collector and emitter junctions (Vce) of the transistor using the formula Vce = Vcc – IcRc, where “Vce” is the collector emitter voltage; “Vcc” is the supply voltage; and “IcRc” is the voltage drop across the base resistor (Rb).

What is base-emitter voltage?

saturation voltage, base-emitter (VBE(sat)) The voltage between the base and emitter terminals for specified base-current and collector-current conditions that are intended to ensure that the collector junction is forward-biased.

Why the collector current is independent of collector to emitter voltage?

In the active region, the collector current is essentially independent of collector voltage and depends only upon the emitter current. Because adc is, less than one but almost equal to unity, the magnitude of the collector current is slightly less that of emitter current.

What is emitter base breakdown voltage?

Emitter-base breakdown voltage is the VB at which a specified IB flows, with the collector open. Since it’s the reverse current across a junction, IB exhibits a knee shaped rise, increasing rapidly once breakdown occurs. On the curve tracer, VB is applied by the Collector Supply.

What is the voltage between base and collector?

The first spec, VCBO, states that the maximum voltage that can be applied from the collector to the base is 50 V. The Collector−Emitter Voltage, VCEO, spec states the maximum voltage that can be applied from the collector to emitter is 50 V.

Why is Collector current slightly less than emitter current?

The base contains more holes than electrons. As the direction of current is opposite to the flow of electrons we can understand that current from the emitter is conducted to the base and the collector. Hence, the collector current will always be slightly less than the emitter current.