when bjt is employed as an amplifier it operates in?
506510
The region where BJT act as an amplifier is termed as the active region. The region where it saturates is called saturation region and the region where it doesn't conduct is called the cut off region.
628454
An Operational Amplifier, or op-amp for short, is fundamentally a voltage amplifying device designed to be used with external feedback components such as resistors and capacitors between its output and input terminals.
201391
In inverting amplifier input and output are out of phase by 180 degrees , inverting amplifier are mostly widely used in oscillator circuits to satisfy barkaushen criteria so that sustained oscillations are produced .
1002814
A BJT is a negative temperature coefficient, so current shaving resistors are necessary during parallel operation of BJT's. In MOSFET secondary breakdown does not occur because it have positive temperature coefficient. But BJT exhibits negative temperature coefficient which results in secondary breakdown.
1101006
A transistor is a semiconductor device. It used to amplify or switch electronic signals and electrical power. The main difference between the capacitor and the transistor is that the capacitor is used to store energy for a short period of time and the transistor act as a switch.
1250680
BJTS and FETs can be used as switches and amplifiers in electrical and electronics circuits. The major difference between BJT and FET is that, in a field effect transistor only majority charge carries flows, whereas in BJT both majority and minority charge carriers flows.
1166982
At resonance, voltage across the resistor is in phase with the applied current. Voltage across the inductor will lead the applied current by 90 degrees.
461435
In an inverting amplifier circuit, the operational amplifier inverting input receives feedback from the output of the amplifier. Assuming the op-amp is ideal and applying the concept of virtual short at the input terminals of op-amp, the voltage at the inverting terminal is equal to non-inverting terminal.
1051185
A transistor is a miniature electronic component that can do two different jobs. It can work either as an amplifier or a switch: When it works as an amplifier, it takes in a tiny electric current at one end (an input current) and produces a much bigger electric current (an output current) at the other.
819471
Alpha of a transistor is the current gain in common base configuration defined as the ratio of change in collector current to change in emitter current while beta is the current gain in CE configuration. It is defined as the change in collector current to base current.
1140857
BJTs and FETs are two different kinds of transistors and also known as active semiconductor devices. ... The major difference between BJT and FET is that, in a field effect transistor only majority charge carries flows, whereas in BJT both majority and minority charge carriers flows.
686899
Most BGR use bipolar junction transistors (BJT) to easily reduce the temperature dependence, due to temperature coefficients, other common practice is the use of operational amplifiers (OP-AMP).
1137690
NPN Transistor as a Switch Based on the voltage applied at the base terminal of a transistor switching operation is performed. When a sufficient voltage (Vin > 0.7 V) is applied between the base and emitter, collector to emitter voltage is approximately equal to 0. Therefore, the transistor acts as a short circuit.
1036393
With a constant value of gate voltage Vg applied the JFET operates within its “Ohmic region” acting like a linear resistive device. The drain circuit contains the load resistor, Rd. The output voltage, Vout is developed across this load resistance. ... Resistor, Rs is also used to set the JFET amplifiers “Q-point”.
657563
The phase difference between input and output in a Common Emitter amplifier is 180 degrees. In a CE configuration when the base current [AC} increases the Collector current also Increases.
626754
PNP transistors are used to source current, i.e. current flows out of the collector. PNP transistors are used as switches. These are used in the amplifying circuits. PNP transistors are used when we need to turnoff something by push a button.
195777
If the transistor is biased into the linear region, it will operate as an amplifier or other linear circuit, if biased alternately in the saturation and cut-off regions, then it is being used as a switch, allowing current to flow or not to flow in other parts of the circuit.