Table of Contents
What is saturation mode of BJT?
The BJT operates in the saturation region when its collector current is not dependent on the base current and has reached a maximum. The condition for this to happen is that both the base-emitter and the base-collector junctions should be forward-biased.
What is cutoff frequency of BJT?
Device Cutoff Frequency – All transistors have junction capacitances. This limitation is expressed as a cutoff frequency (fα), which is the frequency at which the transistor current gain falls to 0.707 of its gain at low and medium frequencies. …
What is the cutoff region of a transistor?
Cutoff region This is the region in which transistor tends to behave as an open switch. The transistor has the effect of its collector and base being opened. The collector, emitter and base currents are all zero in this mode of operation.
What is collector cutoff current?
Collector cutoff current is the IC that still flows when the specified VC and a specified reverse bias is applied. It is normally less than either ICEO or ICER (collector current with the base open, or with the base resistively connected to the emitter).
What is saturation voltage in BJT?
saturation voltage, collector-emitter (VCE(sat)) The voltage between the collector and emitter terminals under conditions of base current or base-emitter voltage beyond which the collector current remains essentially constant as the base current or voltage is increased.
What is the formula for cutoff frequency?
We can write the cutoff frequency equation for RC filter circuit as: fc = 1 / (2 * π * R * C ) . fc = 636.6 Hz .
What is cutoff and saturation?
In cutoff, the transistor appears as an open circuit between the collector and emitter terminals. In the circuit above, this implies Vout is equal to 10 volts. The second region is called “saturation”. This is where the base current has increased well beyond the point that the emitter-base junction is forward biased.
What is cutoff and saturation region?
What is cutoff current?
It is the maximum value of fault current reached when the fuse melts.