Method and apparatus for deriving power from a clock signal coup

Details Method and apparatus for deriving power from a clock signal coup Method and apparatus for deriving power from a clock signal coup

1998-06-02

1999-12-28

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Clock or pulse waveform generating

327300, H03K 104

Patent

active

060086815

ABSTRACT:
A transformer driver circuit connected to the primary or "system" side of a transformer has a system clock connected to an input thereof the system clock having a frequency selected to constitute the desired clock frequency of a CODEC circuit located on the secondary or "line" side of the transformer. A signal line is connected to a point on the secondary of the transformer so as to tap the system clock frequency, whereby both the system clock and the source voltage for the CODEC are derived from the transformer's secondary.

REFERENCES:
patent: 4499532 (1985-02-01), Hudson et al.
patent: 5369666 (1994-11-01), Folwell et al.
patent: 5471470 (1995-11-01), Sharma et al.
patent: 5721506 (1998-02-01), Imam et al.
patent: 5736884 (1998-04-01), Ettes et al.

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