Physics

1. Name - Shivam Raj
Course- B.Sc(
PMS)
Subject - Physics
1
Topic- Transistors and it's applications

2. • Transistor is a three terminal electronic
device
• Transistor Amplifies the weak input signal
• Transistor is used as switch and amplifier
with various electronic devices.
• Transistors consume less power hence they
have great efficiency.
Transistor
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3. • Bipolar Junction Transistors (BJT) – Three
layer sandwich of doped semiconductor
materials.
• Field Effect Transistor (FET) – Two layers of
semiconductor material.
⚬ Junction Field Effect Transistor (JFET)
⚬ Metal Oxide Semiconductor Field Effect
Transistors (MOFET)
⚬ Phototransistors – Light detectors that possess
internal gain
Types of Transistor
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4. A transistor consists of three layers of
semiconductors:
• Base
• Emitter
• Collector
The Bipolar Junction Transistor (BJT) is the simplest
type of transistor
Terminals of transistor s
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5. BJT are classified into two types:
• NPN Transistor
• PNP Transistor
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6. Working of Transistor
• Transistor works as a switch or amplifier
• Base part of transistor is gate controller
device for large amount of electricity
• The collector supplies large amount of
electricity
• The emitter gives us the output.
• The current flowing from collector is
regulated by changing levels of current from
the base.
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7. • A junction field effect transistor is a three
terminal semiconductor device in which
current conduction is by one type of carrier
i.e., electrons or holes.
JFET or Junction Field Effect Transistor is one
of the simplest types of field-effect
transistor
Field effect transistors ( FET)
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8. 13
There are two types of JFET transistor
Application of JFET
• JFET is used as a switch
• JFETs are used in digital circuits
• JFETs are used in cascade amplifiers

9. • A field effect transistor (FET) that can be
operated in the enhancement-mode is called a
MOSFET.
• It stands for Metal Oxide Semiconductor Field
Effect Transistor.
• A MOSFET is an important semiconductor device
and can be used in any of the circuits covered for
JFET.
• However, a MOSFET has several advantages over
JFET including high input impedance and low
cost of production.
MOSFET
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10. 22
There are two types of MOSFET
1.E-
MOSFET
2.D-
MOSFET
Application
• High-voltage protection
circuit.
• Power supply startup
Application
• Used as inverter switch.
• Used as amplifier , digital
conteoller.

11. • Transistors are semiconductor devices that can amplify
or switch electrical signals and power. They are a basic
building block of modern electronics and are used in a
wide array of electronic devices.
• Transistors are used in nearly every electronic device
we use today, from the smallest microchips to the
largest power converters.
Conclusion

12. Thank
you