×

Telephone line power supply

  • US 20020076038A1
  • Filed: 11/06/2001
  • Published: 06/20/2002
  • Est. Priority Date: 11/09/2000
  • Status: Active Grant
First Claim
Patent Images

1. A power supply circuit for powering an electrical device using power from a telephone line, said circuit comprising:

  • a gyrator having an input coupled to the telephone line and an output;

    an inductor having and input and an output;

    an oscillator having an output;

    a pulse circuit coupled to said oscillator and coupled between the output of said gyrator and the input of said inductor; and

    a converter coupled between the output of said inductor and the electrical device, said converter producing line power at an output.

View all claims
  • 8 Assignments
Timeline View
Assignment View
    ×
    ×