Write the circuit of fixed bias configuration using a BJT. Derive the expression for base current and collector to emitter voltage.
Understand the Problem
The question is asking to write the circuit of fixed bias configuration using a BJT and to derive the expression for base current and collector to emitter voltage. This involves understanding the BJT configuration and applying circuit analysis to derive the necessary formulas.
Answer
IB = (Vcc - VBE) / RB and VCE = Vcc - ICRC.
The fixed bias configuration circuit consists of Vcc connected to the collector through Rc and to the base through Rb with the emitter grounded. The expressions derived are IB = (Vcc - VBE) / RB and VCE = Vcc - ICRC.
Answer for screen readers
The fixed bias configuration circuit consists of Vcc connected to the collector through Rc and to the base through Rb with the emitter grounded. The expressions derived are IB = (Vcc - VBE) / RB and VCE = Vcc - ICRC.
More Information
In fixed bias configuration, Vcc is directly applied to the base through resistor RB which controls the base current, and hence the transistor's operating point.
Tips
A common mistake in this derivation is to overlook the base-emitter voltage (VBE) when defining the base current equation. Always ensure to include VBE for accurate calculations.
Sources
- Transistor Biasing and the Biasing of Transistors - Electronics Tutorials - electronics-tutorials.ws
- Methods of Transistor Biasing - TutorialsPoint - tutorialspoint.com
- Chapter 2. - DC Biasing - BJTs - Ajay Bolar - ajaybolar.weebly.com
