Patent ID: 6297676
Filing Date: 2001-10-02
Classification: H03K

Abstract:
A ring inhibiting charging and discharging circuit for use with an amplification circuit that drives a load, the amplification circuit responsive to an input and capable of generating an output corresponding to the input, the input having an input voltage and the output having an output voltage, the ring inhibiting charging and discharging circuit comprising:a charge element, responsive to the output from the amplification circuit, that is capable of charging the load when the input voltage is greater than a preselected multiple of the output voltage; anda discharge circuit, responsive to the output from the amplification circuit, including:a feedback circuit that asserts a difference signal when the output voltage is less than the preselected multiple of the input voltage, anda staging circuit, responsive to difference signal, that gradually reduces a rate at which the load is discharged over a preselected period of time once the difference signal indicates that the output voltage is within a preselected range of the input voltage.