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Circuit shows an op-amp circuit used for generating the square waveform.

If the output frequency required in 1 kHz. then the possible values of R1­ and R2 can be respectively
 
  • a)
    2k, 1.7k
  • b)
    4k, 2k
  • c)
    2k, 4k
  • d)
    1.7k, 2k
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Circuit shows an op-amp circuit used for generating the square wavefor...
Frequency of oscillation

 
If R1 = 2k
R2 = 0.859 × 2
= 1.7 k
Option 1 is correct.
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