Unformatted text preview: depiction of an n-channel enhancement-mode MOSFET. Annotate the diagram
with a ―p‖ or ―n‖ to show the substrate material, and then indicate the body diode. 17. The units for the 18. Annotate the diagram below, showing the MOSFET channel width (W) and length (L) parameter for a MOSFET is ______ 19.
( 4 ( 55:041 Electronic Circuits. The University of Iowa. Fall 2011. (4 points) 20. Write down the dc load line equation for the MOSFET in the circuit below. (3 points) 5 55:041 Electronic Circuits. The University of Iowa. Fall 2011. Problem 2 An engineer measures the rise times of the simple low-pass filter below by driving it
with a step function, and measuring the attenuation at various frequencies. She uses an
oscilloscope with an input impedance of
along with a
probe. What is the rise time
bandwidth of the circuit? What will the engineer measure? (6 points) Solution
Using the ⁄ we find that true rise time is 2 ms.
(‖ Using the ⁄ ( ( ‖( we find she will measure 1.05 ms. 6 ( 55:041 Electronic Circuits. The University of Iowa. Fall 2011. Problem 3 Below is the schematic of a circuit that use a 5 V, three-terminal regulator to
generate some higher regulated output voltage. The data sheet for the LM7805 indicate that the
quiescent bias current, , is less than 8 mA. Design, by specifying values for
and , a 12 V
regulator. Given that could be less that 8 m...
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- Fall '11
- Transistor, Electronic circuits