∴ R =0.625×15.9kΩ =9.94kΩ. However 9.94kΩ is not a standard value. So, a potentiometer of 10kΩ is taken and adjusted to 9.94kΩ. 10. Frequency scaling is done using
A. Standard capacitor
B. Varying capacitor
C. Standard resistance
D. None of the mentioned
Answer:A
∴ R =0.625×15.9kΩ =9.94kΩ. However 9.94kΩ is not a standard value. So, a potentiometer of 10kΩ is taken and adjusted to 9.94kΩ. 10. Frequency scaling is done using
A. Standard capacitor B. Varying capacitor C. Standard resistance D. None of the mentioned
Explanation: In frequency scaling standard capacitors are chosen, because for non standard value of resistor, a potentiometer is used. 11. Find the difference in gain magnitude for a filter ,if it is the response obtained for frequencies f1=200Hz and f2=3kHz. Specification: AF=2 and fH=1kHz.