Question

+5 vVdd Function generator Rload Rsource 50 ? Vi ? Fig. 2: MOSFET switch with a resistive load. Record the exact measured value for Rload here. Rload: Set the function generator to output a square wave varying from 0 to +5 V, 50% duty cycle at 1 Hz. You will need to add a DC offset to obtain this square wave; ask your TA for help if you do not know how to do this. Measure the output of the function generator with the oscilloscope and verify that it is correct (use DC coupling on the oscilloscope). With the output of the function generator off, connect it to MOSFET. Turn on the function generator output, and measure the output of the function generator and the voltage across the MOSFET (VDS), when the switch is open and closed. Both measurements will use DC coupling. Output voltage of function generator (switch open): VDS (switch open): Output voltage of function generator (switch closed): VDS (switch closed):

          +5 vVdd
Function generator
Rload
Rsource
50 ?
Vi
?
Fig. 2: MOSFET switch with a resistive load.
Record the exact measured value for Rload here. Rload:
Set the function generator to output a square wave varying from 0 to +5 V, 50% duty cycle at
1 Hz. You will need to add a DC offset to obtain this square wave; ask your TA for help if
you do not know how to do this. Measure the output of the function generator with the
oscilloscope and verify that it is correct (use DC coupling on the oscilloscope).
With the output of the function generator off, connect it to MOSFET. Turn on the function
generator output, and measure the output of the function generator and the voltage across the
MOSFET (VDS), when the switch is open and closed. Both measurements will use DC
coupling.
Output voltage of function generator (switch open):
VDS (switch open):
Output voltage of function generator (switch closed):
VDS (switch closed):

+5 vVdd
Function generator
Rload
Rsource
50 ?
Vi
?
Fig. 2: MOSFET switch with a resistive load.
Record the exact measured value for Rload here. Rload:
Set the function generator to output a square wave varying from 0 to +5 V, 50% duty cycle at
1 Hz. You will need to add a DC offset to obtain this square wave; ask your TA for help if
you do not know how to do this. Measure the output of the function generator with the
oscilloscope and verify that it is correct (use DC coupling on the oscilloscope).
With the output of the function generator off, connect it to MOSFET. Turn on the function
generator output, and measure the output of the function generator and the voltage across the
MOSFET (VDS), when the switch is open and closed. Both measurements will use DC
coupling.
Output voltage of function generator (switch open):
VDS (switch open):
Output voltage of function generator (switch closed):
VDS (switch closed):

Added by Jerry H.

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