Which transistor configuration has the highest current gain?
common emitter amplifier configuration
The common emitter amplifier configuration produces the highest current and power gain of all the three bipolar transistor configurations.
What is the fastest switching transistor?
Feng and Hafez developed a transistor less than half a millionth of a metre long, with a maximum operating speed of 604 GHz, meaning it can carry out 604 billion operations every second.
Which is faster BJT or FET?
The description above was for MOSFET or other types of FET. BJT is overall faster due to less junction capacitance in comparison with the large gate-source capacitance of MOS.
How do you choose a PNP or NPN transistor?
Choose the right type of transistor, NPN or PNP To switch on when the IC output is high use an NPN transistor. To switch on when the IC output is low use a PNP transistor.
Which configuration has lowest current gain?
Transistor circuit configuration summary table
| Transistor Configuration Summary Table | ||
|---|---|---|
| Transistor Configuration | Common Base | Common Emitter |
| Current gain | Low | Medium |
| Power gain | Low | High |
| Input / output phase relationship | 0° | 180° |
What is current gain in a transistor?
The current gain for the common-base configuration is defined as the change in collector current divided by the change in emitter current when the base-to-collector voltage is constant. Typical common-base current gain in a well-designed bipolar transistor is very close to unity.
How can a transistor act as a switch?
One of the most common uses for transistors in an electronic circuit is as simple switches. In short, a transistor conducts current across the collector-emitter path only when a voltage is applied to the base. When no base voltage is present, the switch is off. When base voltage is present, the switch is on.
How can I make my transistor faster?
Re: How can we make transistor switch faster So you are trying to discharge the capacitor (from -5V to -6V, I think in positive charge), by sucking the charge out via Q5 collector. You could try using a speed up capacitor to to the base of Q4 to reduce its Ic, so Q5 can handle the current faster.
Can a transistor switch instantly?
However, bipolar transistors can be very fast — they can be switched in picoseconds inside ICs.
Why is NPN transistor prefered over PNP?
When the transistors are used in electronic circuits for switching purpose, then the NPN transistor is more preferable than the PNP transistor because the switching speed of the NPN transistor is greater than the PNP transistor .
How to identify a PNP or NPN transistor?
Parts Required
What does NPN and PNP stand for in transistors?
While, in PNP transistors, holes are the majority carriers, hence current flows due to the movement of holes. NPN transistor is the acronym used for Negative-Positive-Negative transistors . As against, PNP transistor is an acronym used for Positive-Negative-Positive transistor.
What are the functions of a NPN transistor?
Applications of NPN transistor As NPN transistors are used for signal amplification. Thus used in amplifying circuits. It also finds its applications in logarithmic converters. One of the major advantages of NPN transistor is its switching characteristic. Thus widely used in switching applications. These are also used in high-frequency applications.