Amplification circuitry

Details Amplification circuitry Amplification circuitry

2005-09-13

2005-09-13

Nguyen, Patricia (Department: 2817)

Amplifiers

Signal feedback

In cascade amplifiers

C330S010000

Reexamination Certificate

active

06943623

ABSTRACT:
Amplification circuitry for driving a load in response to an input signal, comprising: a phase locked loop, for producing a pulse width modulated signal for driving the load and input circuitry arranged to control the phase locked loop and vary the pulse width modulated signal in response to the input signal.

REFERENCES:
patent: 4004246 (1977-01-01), Hamada
patent: 4535399 (1985-08-01), Szepesi
patent: 6480704 (2002-11-01), Pakonen
patent: 6768376 (2004-07-01), Hoyt et al.
patent: 2003/0227342 (2003-12-01), Liu
patent: WO-01/71905 (2001-09-01), None

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