# Thevenin Equivalent for a circuit containing a dependent source - PowerPoint PPT Presentation

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Thevenin Equivalent for a circuit containing a dependent source. Determine the Thevenin voltage V Th. + V Th -. I. 20 I. Determine the Thevenin resistance R Th.

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Thevenin Equivalent for a circuit containing a dependent source

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### Thevenin Equivalent for a circuit containing a dependent source

ECE 201 Circuit Theory I

### Determine the Thevenin voltage VTh

+

VTh

-

I

20 I

ECE 201 Circuit Theory I

### Determine the Thevenin resistance RTh

De-activate the independent voltage source and excite the circuit from the a-b terminals with either a voltage or current source. Here, use a voltage source – then we will know the dependent voltage and dependent current.

ECE 201 Circuit Theory I

### Thevenin Resistance (continued)

IT

Apply voltage VT and determine the current IT.

The Thevenin Resistance will be RTh = VT / IT.

ECE 201 Circuit Theory I

### Thevenin Resistance (continued)

IT

I

20 I

ECE 201 Circuit Theory I

### The Thevenin Equivalent Circuit

ECE 201 Circuit Theory I