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Lab #7 – Thevenin/Norton

Lab #7 – Thevenin/Norton. Activity #1 – finding the Thevenin/Norton Equivalent for the function generator The function generator is a voltage source that produces an AC voltage, usually a sinusoidal voltage.

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Lab #7 – Thevenin/Norton

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  1. Lab #7 – Thevenin/Norton • Activity #1 – finding the Thevenin/Norton Equivalent for the function generator • The function generator is a voltage source that produces an AC voltage, usually a sinusoidal voltage. • The waveform produced repeats itself over and over again, in this case 400 times per second

  2. BK Function Generator Adjust output Voltage Choose Sine Turn on Select the range Adjust the frequency knobs to the desired frequency. Output terminal

  3. Lab #7 – Thevenin/Norton • Activity #1 – finding the Thevenin/Norton Equivalent for the function generator • The multimeter is used to measure the RMS (root mean square) voltage (or effective DC voltage because it supplies as much power as a DC voltage source would.) • The DMM can also measure the frequency of the source.

  4. Digital Multimeter (DMM) Range is set automatically Power switch AC current AC voltage Press the AC voltage button to get the RMS value of AC part of waveform.

  5. Digital Multimeter (DMM) FREQ 2ND You can display the Frequency at the same time by pressing the 2ND button and then pressing the FREQ button.

  6. Activity #2 – Max Power • Now that you have Rth = RN you can measure the output voltage for different loads and calculate the power delivered to each load.

  7. Activities #3-5 – Simulations • Find Vth • Find open circuit voltage for • Circuit with only independent sources • Circuit with both independent and dependent sources • Vth=0 for circuits with only dependent sources

  8. Activities #3-5 – Simulations • Find Rth • For circuits with only independent sources • By source removal, short circuit current or by applying a load • For circuits with only dependent sources • Connect a test source to the output • For circuits with both types of sources • By short circuit current, by applying a load or by connecting a test source to the output

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