In a clapp oscillator with three capacitor C1, C2, C3, C1 is used as upper capacitor in voltage divider, C2 is used as lower capacitor in voltage divider and C3 is the third capacitor. For perfect operation which of these capacitor should have minimum value?

Correct Answer: C3
In a Clapp oscillator C3 is much smaller than C1 and C 2as a result, the equivalent capacitance C is approximately equal to C3. For perfect operation C3 should have minimum value.