What is a source transformation?

The source transformation is the process of representing the circuit in terms of load or other district. The concept of the source transform suggests that any energy source can be represented as a source of voltage or current source. If the electrical impedance submitted to the load or other district can be calculated, the analysis of the circuit is simplified. The transformation of the source is applied to the design and testing of various types of circuits-the relatively simple direct current circuits (DC) for calculating power in steady state to more complex circuits. For high frequencies of alternative current (AC), such as radio frequencies, the transformation of the source helps to design impedance corresponding circuits for maximum energy transfer.

Any energy source will represent impedance under AC conditions. Mathematics involved in the representation of impedance in the steady state of DC can easily be described. Common and brand new 1.5-V) cell or battery will have an open perimeter of about 1.5 V. When this battery is connected to the equipment andDisabled by power, the voltage drops below 1.5 V. It is certain that there will be a non -zero current from the battery.

For example, if the battery 1.5 V measures 1.4 V, when the current flows through it 0.01 ampere (A), the battery can be represented as an ideal source of 1.5 V V V series with internal resistance. The internal resistance has a decrease of 0.1 V, which is the difference in the internal ideal voltage and terminal output. The current of 0.01 A indicates that the battery resistance must be 0.1 V/0.01 and equal to 10 ohms. 10 Ohms are calculated internal battery resistance and is distributed inside the electrolyte and electrodes inside the battery.

Thevenin's sentence states that any energy source is an ideal source of voltage in the internal resistance series. Theoren sentence is still paid for temporary and alternating analysis, but complexity is manifested when resistant, capacitive and inductive components of internal resistance need to be calculated. In the simplest impedance for pThe DC in steady state can be represented by a network of resistance with resistance values ​​that are dependent on temperature and current. For the description of TheVenin sentences, the voltage source is simply considered to be a short circuit, then the resistance that is observed on the output terminals will be calculated using Ohm's law, which indicates that resistors are added in the series.

According to the transformation of the source according to Norton's sentence, it indicates that the internal resistance is calculated in the same way. Instead of a voltage source with zero resistance, a source of endless resistance is used, but the results are the same. The calculated voltage and current, and therefore the power supply supplied to the external load will be the same using thevenins or norton 'with the sentence.