What is transistor amplifier explain?
Transistor Amplifier A transistor acts as an amplifier by raising the strength of a weak signal. The DC bias voltage applied to the emitter base junction, makes it remain in forward biased condition. Thus a small input voltage results in a large output voltage, which shows that the transistor works as an amplifier.
Why the basic is used in the transistor amplifier circuit?
The value of this resistor is chosen so that at the amplifiers quiescent operating point, Q-point this output voltage lies half way along the transistors load line. The Base of the transistor used in a common emitter amplifier is biased using two resistors as a potential divider network.
What is the meaning of amplifier circuit?
An amplifier is a circuit that has a power gain greater than one. An amplifier can either be a separate piece of equipment or an electrical circuit contained within another device. Amplification is fundamental to modern electronics, and amplifiers are widely used in almost all electronic equipment.
What are types of amplifier?
different types of amplifiers are also often described in system or block diagrams by name.
- Amplifier.
- Audio Frequency Amplifier.
- Intermediate Frequency Amplifier.
- R.F. Amplifier.
- Ultrasonic Amplifier.
- Operational Amplifier.
What are the two main types of transistor?
Transistors typically fall into two main types depending on their construction. These two types are bipolar junction transistors (BJT) and Field Effect Transistors (FET).
What is current amplification of a transistor?
A transistor works by feeding a current into the base of the transistor. The base current is then amplified by hFE to yield its amplified current. The formula is below: IC= hFEIB=βIB . So if 1mA is fed into the base of a transistor and it has a hFE of 100, the collector current will be 100mA. Every transistor has its own unique hFE.
What is an example of a transistor?
The definition of a transistor is an electronic device that works by controlling the flow of the electrical current. An example of a transistor is something combined in large numbers with microcircuits into a single circuit board and used in a computer. YourDictionary definition and usage example. “Transistor.”.
What is audio transistor?
Typically, an audio transistor is an amplification type transistor used to boost weak audio signals, such as in radios, to levels usable by other electronic devices, such as filters, equalizers, other amplifiers, and speakers. Standard audio transistors are typically NPN-type bipolar junction transistors.