Emitter Reports Samples For Students

* Names of Group:
1. .. ID #:
2. ID #:
3 ID #:
* Date: / / .

Results:

Based on measurements, complete the table below:
Discussion:
Discuss the application of common collector transistor circuit.
The common collector configuration of the BGJ amplifier is mostly commonly employed as buffer or emitter follower. The voltage gain of the common collector amplifier is nearly unity and provides large current amplification. It is used in applications where current sourcing is required without modifying the voltage. The input resistance is quite high so it draws negligible current from source. Moreover, the load circuit will not interfere ...

Lab Report: Common Emitter Amplifier

Acronyms and Abbreviations
AC Alternate Current
BJT bipolar-junction-transistor
DC Direct Current
mA milliAmps

PNP Positive-Negative-Positive

Q point Quiescent Point
RF Radio Frequencies
Lab Report: Common Emitter Amplifier

Introduction

A laboratory was conducted to evaluate the characteristics of a common emitter amplifier. The configuration is a bipolar-junction-transistor (BJT). Transistors allow current to flow from positive to negative states or from negative to positive states. A transistor board was supplied for the experiment. Five activities were done during the lab: a DC analysis, An AC analysis gain at midband (with bypass capacitor in circuit), AC analysis gain at midband (with no ...

Cut Off Region of a Transistor

The transistor goes into the cutoff region when the base current (IB) is equal to zero. The collector leakage current ICEO under such conditions is quite low due to the effect of thermally-generated carriers. This means that ICEO can be neglected in the circuit analysis such that VCE will be equal to VCC. During the cutoff region, both the base-collector and the base emitter junctions are reverse biased. Subscript CEO means a representation of the collector to emitter with the base open. This is represented in the circuit below.

Saturation Region of a Transistor

Forward biasing of the base-emitter junction increases the base current. Consequently, ...

* Names of Group:
1. .. ID #:
2. ID #:
3 ID #:
* Date: / / .

Discussion:

Using the measurements made in the procedure, calculate the quiescent current IE, and the internal emitter resistance re.
The quiescent current IE and internal emitter resistance re can be calculated using the DC analysis carried out in Step#1 and Step#2 of the procedure. The DC voltage measured across RE is used to measure the biasing current across the emitter of BJT. The voltage is measured to be 793mV. Since RE = 1KΩ, so:
IE=VERE=0.7931000=0.000793A=0.793mA.

Now, we can calculate the internal resistance of emitter using the formula provided in the procedure. So:

re=0.026IE=0.0260.000793=32.786Ω

Using the values obtained in the experiment; draw the small-signal ac equivalent circuit for the amplifier.

In this part, we will draw the small scale ...

Introduction

A voltage stabilizer is an electronic gadget found in most of the circuit board of home electronics. A voltage stabilizer can be found in computers radios phone chargers and also DVD players. This important gadget comprises of diodes, capacitors, transistors, resistors and a step-down transformer. The work of a voltage stabilizer is to provide a steady current to the electronic equipment for it to function efficiently. A simple model of a voltage stabilizer looks like the diagram below. Symbols have their usual meaning.
In the above diagram, a step-down transformer reduces 240V of alternating current to around 10V of alternating current at the ...