Electronics - Special-Purpose Op-Amp Circuits
Exercise :: Special-Purpose Op-Amp Circuits - General Questions
| 6. |
The primary function of the oscillator in an isolation amplifier is to |
| A. |
convert dc to high-frequency ac | | B. |
convert dc to low-frequency ac | | C. |
rectify high-frequency ac to dc | | D. |
produce dual-polarity dc voltages for the input to the demodulator |
Answer: Option A
Explanation:
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| 7. |
Refer to Figure 20-2. This circuit is a setup for
|
| A. |
an antilog amplifier | | B. |
a constant-current source | | C. |
an instrumentation amplifier | | D. |
an isolation amplifier |
Answer: Option B
Explanation:
|
| 8. |
An instrumentation amplifier has a high |
| A. |
output impedance | | B. |
power gain | | C. |
CMRR | | D. |
supply voltage |
Answer: Option C
Explanation:
|
| 9. |
This circuit is a setup for |
| A. |
an antilog amplifier | | B. |
a constant-current source | | C. |
an instrumentation amplifier | | D. |
an isolation amplifier |
Answer: Option D
Explanation:
|
| 10. |
Circuits that shift the dc level of a signal are called |
| A. |
limiters | | B. |
clampers | | C. |
peak detectors | | D. |
dc converters |
Answer: Option B
Explanation:
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