×

Time interval trimmed differential capacitance sensor

  • US 7,368,923 B2
  • Filed: 12/22/2005
  • Issued: 05/06/2008
  • Est. Priority Date: 12/22/2005
  • Status: Active Grant
First Claim
Patent Images

1. A detector drive circuit for operation of a differential capacitance transducer, the circuit comprising:

  • a pair of sense capacitors;

    a pair of drive signal generators in signal communication with the pair of sense capacitors, the pair of drive signal generators structured to apply respective substantially opposing polarity excitation drive signals to the respective sense capacitors; and

    a null bias trim circuit coupled for individually controlling the respective drive signal generators.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×