14-02-2013, 12:42 PM
INTRODUCTION TO TRANSISTORS and common applications in
mechatronics
[attachment=50857]
What is a Transistor?
A Transistor is an electronic device
composed of layers of a semiconductor
material which regulates current or
voltage flow and acts as a switch or gate
for electronic circuit.
History of the Transistor
P-N Junction
Russell Ohl 1939
First Transistor
Bell Labs 1947
Shockley, Brattain,
and Bardeen
First Solid State
Transistor - 1951
Applications
• Switching
• Amplification
• Oscillating Circuits
• Sensors
Transistor Physics
• P-N Junction
• Forward Biased => Current Flows
• Applying +ve Voltage > Barrier Voltage to
Anode allows current flow
mechatronics
[attachment=50857]
What is a Transistor?
A Transistor is an electronic device
composed of layers of a semiconductor
material which regulates current or
voltage flow and acts as a switch or gate
for electronic circuit.
History of the Transistor
P-N Junction
Russell Ohl 1939
First Transistor
Bell Labs 1947
Shockley, Brattain,
and Bardeen
First Solid State
Transistor - 1951
Applications
• Switching
• Amplification
• Oscillating Circuits
• Sensors
Transistor Physics
• P-N Junction
• Forward Biased => Current Flows
• Applying +ve Voltage > Barrier Voltage to
Anode allows current flow