Analog-designs Questions Set 69:
A transistor can also be used as:
Solution:
If the holding current of a Thyristor is 1.5 mA, then the latching current is:
Solution:
Where is the Q point located for a class B amplifier?
Solution:
What design is used to avoid the need for a transformer in an amplifier circuit?
Solution:
Find the bandwidth of a FET from the given data:
Transconductance (gm) = 9.5 mA/V
Total capacitance = 500 pF
Voltage gain (AV) = -30
Solution:
A capacitor has an internal resistance of 20Ω and capacitance of 50μF. The voltage supply v(t) = 50sin(314t). Calculate the angle between current and voltage in degrees.
Solution:
Consider a process technology for which the minimum length is 0.4 μm and the thickness of the oxide is 8 nm. Calculate the capacitance of the silicon dioxide insulator.
Solution:
The resistivity of an n-type silicon sample is 0.5 ohm-cm. If the electron mobility (μn) is 1250 cm2/V-s and the charge of an electron is 1.6x10-19 C, the donor impurity concentration (ND) in the sample is
Solution:
Match the following transistor configurations with their properties.
LIST 1:
- Common Emitter(CE)
- Common Base(CB)
- Common Collector(CC)
LIST 2
i. high input impedance, low output impedance, no phase shift.
ii. moderate input impedance, moderate output impedance, 180 degree phase shift.
iii. very low input impedance, very high output impedance, no phase shift.
Solution:
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