Drain Feedback Bias
The given Figure shows the Drain Feedback Bias. This biasing technique operates by selecting the “on” operating point on the characteristic curve. In this the drain current is set up by appropriately choosing the power supply and drain resistor.
Using KVL in the circuit we have
[Tex]V_{DD}=V_{RD}+V_{RG}+V_{GS}[/Tex]
[Tex]V_{DD}=I_DR_D+I_GR_G+V_{GS}[/Tex]
the gate current will be zero, so we have
[Tex]V_{DD}=I_DR_D+V_{GS}[/Tex]
also,
[Tex]V_{DS}=V_{GS}[/Tex]
So,
[Tex]V_{GS}=V_{DS}=V_{DD}-I_DR_D[/Tex]
E-MOSFET
Enhancement MOSFET which is commonly called as E-MOSFET is a type of field effect transistor which is used mainly in voltage-controlled devices. It is a unipolar device, i.e. device in which conduction of current takes place either by electrons or holes. It is a three-terminal device which is mainly used as amplifier or in switching devices.
This type of transistor can be used both in analog and digital devices. These transistors are more popular than Bipolar junction transistors due to less power dissipation and negligible leakage current. These are smaller in size and hence find its application in integrated circuits (ICs).
Table of Content
- Enhancement Type MOSFET
- Symbol
- Types of E-MOSFET
- N-Channel E-MOSFET
- P-Channel E-MOSFET
- Working
- Characteristics
- Difference Between Depletion MOSFET and Enhancement MOSFET
- Features of
- Advantages
- Disadvantages
- Applications