I am currently researching on a method to detect small changes in capacitance using CAPACITANCE TO PHASE CONVERSION technique.However, I am stuck at a very basic concept. I am unable to determine the use of compensation capacitance at the input. It would be of great help if somebody could help me understand the basics of the compensation capacitance(Cc)and its purpose and the difference between with and without the compensating capacitor (along with waveforms in Ltspice if possible).
To make it clearer, I have attached 2 diagrams.
Diagram 1: WITHOUT THE COMPENSATING CAPACITANCE.
Diagram 2: WITH THE COMPENSATING CAPACITANCE (Cc).
In the simulation, I am unable find the difference in the waveforms between the circuits mentioned above (i.e Diagram1 and Diagram2).
To make it clearer, I have attached 2 diagrams.
Diagram 1: WITHOUT THE COMPENSATING CAPACITANCE.
Diagram 2: WITH THE COMPENSATING CAPACITANCE (Cc).
In the simulation, I am unable find the difference in the waveforms between the circuits mentioned above (i.e Diagram1 and Diagram2).
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