Discussion
Home ‣ Electronics ‣ Special-Purpose Op-Amp Circuits Comments
- Question
The gain of an OTA is the ratio of the output current to the input voltage, and is measured in _____________.
Options- A. amps
- B. volts
- C. siemens
- D. no units
- Correct Answer
- siemens
- 1. A Schmitt trigger is a comparator with _______.
Options- A. modulation
- B. a closed-loop gain less than one
- C. hysteresis
- D. a high threshold value Discuss
- 2. An instrumentation amplifier has extremely high ________, good ________, and high ________.
Options- A. input impedance, common-mode rejection, gain
- B. noise factor, grounding, power
- C. working voltages, current capacity, output impedance
- D. output gain, output loading, power Discuss
- 3. A(n) ________ amplifier is used if the application requires a high sensitivity to low-level signals and protection from high-voltage associated circuits.
Options- A. basic instrumentation
- B. operational transconductance
- C. log/antilog amplifier
- D. isolation Discuss
- 4. The ________ amplifier is ideal for amplitude modulation since its gain is current-controlled.
Options- A. log
- B. operational transconductance
- C. isolation
- D. Schmitt Discuss
- 5. A Schmitt trigger has _________.
Options- A. no trigger points
- B. one trigger point
- C. two trigger points
- D. three trigger points Discuss
- 6. If an operational transconductance amplifier (OTA) is used as an amplitude modulator, the voltage gain is varied by applying a _________ voltage to the ______ input.
Options- A. demodulation, bias
- B. modulation, bias
- C. bias, modulation
- D. low-frequency, bias Discuss
- 7. The precision rectifier circuit is designed to _________.
Options- A. rectify waveforms with very large voltage swings
- B. rectify waveforms with very small voltage swings
- C. rectify precision waveforms
- D. amplify and rectify waveforms Discuss
- 8. The basic instrumentation amplifier has ________ input(s).
Options- A. 1
- B. 2
- C. capacitive
- D. resistive Discuss
- 9. A 2% 55 kΩ resistor would have a color coding of green, green, black, red, red.
Options- A. True
- B. False Discuss
- 10. 4 amperes will flow through a 10 Ω resistor if 20 volts are placed across the resistor.
Options- A. True
- B. False Discuss
Special-Purpose Op-Amp Circuits problems
Search Results
Correct Answer: hysteresis
Correct Answer: input impedance, common-mode rejection, gain
Correct Answer: isolation
Correct Answer: operational transconductance
Correct Answer: three trigger points
Correct Answer: modulation, bias
Correct Answer: rectify waveforms with very small voltage swings
Correct Answer: 2
Correct Answer: True
Correct Answer: False
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