Q: How much current flows across R2? What is the voltage drop across R2? A: We begin by evaluating the circuit from two points of view: Vs1 and Vs2. In order to begin our journey, the Vs2 voltage source is shorted: From the vantage point of Vs1, resistor R1 is in series with resistors R2Continue reading “INTRODUCTION TO ELECTRONICS: The Superposition Theorem“
Tag Archives: Thevenin Equivalent Circuit
INTRODUCTION TO ELECTRONICS: The Maximum Power Transfer Theorem
Within the field of electronics, a delicate balance between energy transfer and efficiency must be maintained; however, in some circumstances, maximum power ( P ) must be delivered to a load without regard to how inefficient the process may be. Herein lies the concept of maximum power transfer. The mathematical derivations relevant to this processContinue reading “INTRODUCTION TO ELECTRONICS: The Maximum Power Transfer Theorem“
INTRODUCTION TO ELECTRONICS: Wheatstone Bridge Voltage and Current Determination
A Wheatstone bridge circuit has the following voltage ( Vs ) and resistor ( R ) values: Q: What is the value for the voltage ( VL ) drop and current ( I ) across the load resistor ( RL )? A: We begin by removing the load resistor and marking the new terminals ofContinue reading “INTRODUCTION TO ELECTRONICS: Wheatstone Bridge Voltage and Current Determination“
INTRODUCTION TO ELECTRONICS: Thevenizing a Wheatstone Bridge Circuit
Many simple circuits can be categorized as being either a series circuit, parallel circuit, or a combination series-parallel circuit. To the contrary, analysis of Wheatstone bridge circuits is comparatively difficult, because no clear cut series-parallel relationship exists between its component resistors: Thevenin’s theorem enables us to analyze the circuit with convenience via removal of theContinue reading “INTRODUCTION TO ELECTRONICS: Thevenizing a Wheatstone Bridge Circuit”
INTRODUCTION TO ELECTRONICS: Thevenin Voltage and Resistance Determination
Now that a conceptual understanding of Thevenin’s theorem has been established, we are ready to determine the Thevenin voltage ( VTH ) and Thevenin resistance ( RTH ) for an open circuit: The equivalent voltage will represent a system in which the voltage source ( Vs ) has been replaced by a voltage that “Continue reading “INTRODUCTION TO ELECTRONICS: Thevenin Voltage and Resistance Determination“
INTRODUCTION TO ELECTRONICS: A Conceptual Analysis of Thevenin’s Theorem
A physical system would be meaningless without an observer. Conclusions about electrical systems are oftentimes made from the vantage point of the source ( Vs ), but this need not be the case. If a portion of a circuit is “ opened “, an observer can view the source and other components from the newlyContinue reading “INTRODUCTION TO ELECTRONICS: A Conceptual Analysis of Thevenin’s Theorem“
INTRODUCTION TO ELECTRONICS: Thevenin’s Theorem and Equivalent Circuits
In the diagram below, a circuit is placed within a box. Next, the circuit is opened on the opposite end of the voltage source inside so that two output terminals are visible. The current ( I ) and potential difference ( V ) in relation to the newly created output terminals is then measured: TheContinue reading “INTRODUCTION TO ELECTRONICS: Thevenin’s Theorem and Equivalent Circuits“
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