Schottky Clamped Transistor
Clamped Transistor
Clamping means to maintain the voltage limits i.e. shifting input signal to a particular value by manipulating input characteristics.
In order to make a Schottky-clamped transistor, we add a Schottky diode in parallel with the base-emitter junction of the transistor. This results in a specialized type of bipolar transistor .
The benefit we get from this design is improved switching speed and efficiency of the transistor. On careful observation we can see that this diode is connected in such a way that it forms a low-resistance path for the base current i.e. this path offers very less resistance to the flowing current.
The Schottky diode provides a low forward voltage drop and fast switching characteristics. In forward mode, the Schottky diode effectively clamps the voltage across the base-emitter junction to a lower value than in standard bipolar transistors. This results in a reduced storage time and the switching off speed of the transistor is increased.
This design is majorly used in applications that require rapid switching , such as RF amplifiers and high-speed digital electronics.
Schottky Diode
The Schottky diode is popularly known as a hot-carrier diode, low-voltage diode, or Schottky barrier diode. It is a type of diode formed by the junction of a semiconductor with a metal. We know that in a PN junction diode, p-type and n-type semiconductors are joined collectively to form a PN junction. To the contrary, a Schottky diode replaces the p-type semiconductor with metals like aluminium.
Schottky diode has multiple characteristics which makes it a better choice over other diodes in the electronic industry. It displays characteristics like fast switching action and a low forward voltage drop. The symbolic representation of this diode, the construction of this diode, the energy band of the diode and what the V-I characteristic graph of this diode looks like.
Table of Content
- What is Schottky Diode?
- Schottky Diode Construction
- Working Of Schottky Diode
- V-I Characteristic of Schottky Diode
- Schottky Barrier
- Schottky Clamped Transistor
- Schottky Diodes in Logic Gates
- Characteristics of Schottky Diode
- Difference between Schottky and P-N junction Diode
- Applications of Schottky Diode
- Advantages of Schottky Diode
- Disadvantages of Schottky Diode
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