Physics · Instruments
For measuring the frequency of an unknown AC source using digital electronic methods, which of the following devices is necessary to convert the input signal into a standard square wave?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Operational amplifier alone
- 2Astable multivibrator
- 3Schmitt trigger✓
- 4Monostable multivibrator
Correct answer
Schmitt trigger
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