**Applications of Dependent Sources MIT OpenCourseWare**

To find the Thevenin resistance, set all sources to zero and find the resistance of the resulting circuit Consider again the circuit from above, and try to find the Thevenin circuit at …... Why are techniques different for finding Thevenin Equivalent Circuits when there are indepedent and/or dependent sources? If all the resistors are positive but you have dependent sources, you can find a negative value for Rth in some cases. If you don't have independent sources in the circuit then Voc=Isc=0 and Rth=Voc/Isc is undetermined and you cannot find Rth with this relation. In this

**Applications of Dependent Sources MIT OpenCourseWare**

Why are techniques different for finding Thevenin Equivalent Circuits when there are indepedent and/or dependent sources? If all the resistors are positive but you have dependent sources, you can find a negative value for Rth in some cases. If you don't have independent sources in the circuit then Voc=Isc=0 and Rth=Voc/Isc is undetermined and you cannot find Rth with this relation. In this... The load resistor R 2 cannot “tell the difference” between the original network of B 1, R 1, R 3, and B 2, and the Thevenin equivalent circuit of E Thevenin, and R Thevenin, provided that the values for E Thevenin and R Thevenin have been calculated correctly.

**Circuit Analysis with Dependent Sources A)Node Equations C**

When the source network has a ladder structure and contains no controlled (dependent) sources, R TH is easily found by series-parallel reduction of the dead network. When the source network contains controlled sources , the Thevenin’s resistance can be found using the method represented by figure 4. how to get rid of black pores on my nose For the circuit on Figure 4 calculate the voltage v. R A v Vs +-v Is Figure 4. Circuit with dependent source. Analysis using superposition We proceed by first considering the effect of the current source acting alone. The circuit of Figure 5 shows the corresponding circuit for which the independent voltage source Vs has been suppressed. R A v1 +-Is v1 Figure 5. Circuit with the voltage source

**Applications of Dependent Sources MIT OpenCourseWare**

To find RTh: Case 1: If the network has no dependent sources, we turn off all indep. Source. Example:Find the Thevenin equivalent circuit with only dep. source. RTh VTh = 0 5.4 Thevenin’s Theorem (5) 5.5 Norton’s Theorem (1) 15 It states that a linear two?terminal circuit (Fig. a) can be replaced by an equivalent circuit (Fig. b) consisting of a current source I N in parallel with a rabb.it how to find genre The load resistor R 2 cannot “tell the difference” between the original network of B 1, R 1, R 3, and B 2, and the Thevenin equivalent circuit of E Thevenin, and R Thevenin, provided that the values for E Thevenin and R Thevenin have been calculated correctly.

## How long can it take?

### Applications of Dependent Sources MIT OpenCourseWare

- Lecture 4 More on Dependent Sources NPTEL
- Circuit Analysis with Dependent Sources A)Node Equations C
- Apply Theveninâ€™s Theorem to Solve a Negative Resistance
- Circuit Theorems Thevenin and Norton Equivalents Maximum

## How To Find R Thevenin With Dependent Sources

dependent source circuits with KVL and KCL equations. The Thevenin-Norton The Thevenin-Norton Equivalents will help us to simplify circuits as they get more and more challenging.

- Isc or Rth. Thevenin equivalent circuits are discussed in Section 5.5 of Introduction to Find the value of the open circuit voltage, Voc and Thevenin resistance, Rth. Figure 3 The circuit considered in Example 2. Solution: The circuit from Figure 3a can be reduced to its Thevenin equivalent circuit in five steps shown in Figure 4a, b, c, d and e. A source transformation transforms the
- Use of Dependent Sources Let’s consider the voltage controlled voltage source shown on Figure 6 i1 v1 + -vs = A v1 Figure 6. VCVS In practice these devices are …
- Without dependent sources, zeroing all the independent sources leaves a resistor network so that the Thevenin resistance can be calculated directly. However, dependent sources typically alter the Thevenin resistance so those can't be zeroed.
- This is true for network with linear elements, and linear dependent sources. For measuring effect of many sources (also called forcing functions), the effect due to one source at a time is computed (assuming all others to be null).