Can I use PNP transistor as an amplifier?
Table of Contents
Can I use PNP transistor as an amplifier?
The PNP transistor can act as a switch and an amplifier.
Which transistor is used for amplifier NPN or PNP?
An NPN (Negative-Positive-Negative) type and a PNP ( Positive-Negative-Positive) type. The most commonly used transistor configuration is the NPN Transistor. We also learnt that the junctions of the bipolar transistor can be biased in one of three different ways – Common Base, Common Emitter and Common Collector.
Why NPN transistor is used in amplifier?
For a npn transistor to be used as an amplifier, forward bias has to be applied on the transistor. Thus, when an npn transistor is used as an amplifier, holes move from base to emitter. So, the correct answer is option D i.e. holes move from base to emitter.
What is difference between PNP and NPN transistor?
PNP switches On by a low signal whereas NPN switches ON by a high signal. As we are aware that in PNP transistor, the P represents the polarity of the emitter terminal and N represents the polarity of the base terminal.
Which transistor can be used as an amplifier?
Consider a CE- transistor made to work as an amplifier. The audio signal voltage across the collector resistance of 2 KΩ is 2 volts.
Which transistor is best for audio amplifier?
You could successfully build a audio amp from many different types of BJTs. It will be the circuit, not the transistor, that makes the amp work well. I’d pick jellybean parts like the 2N4401 (NPN) and 2N4403 (PNP) and stick with them for everything except for the final power output transistors.
Are all transistors amplifiers?
By using the above formulas, voltage gain can be calculated for the amplifier circuit. Thus, this is all about transistor as an amplifier. From the above information, finally, we can conclude that a transistor can perform like an amplifier only when it is biased properly.
How do I choose an amplifier transistor?
Here are some of the key characteristics of transistors which you must understand before buying a transistor for your upcoming project.
- Collector Current.
- Saturation Voltage.
- Breakdown Voltages.
- Current Gain.
- Material.
- Polarity.
