Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate
2007-02-06
2007-02-06
Pascal, Robert (Department: 2817)
Amplifiers
Modulator-demodulator-type amplifier
C330S20700P, C330S251000
Reexamination Certificate
active
10906747
ABSTRACT:
A switching amplifier includes a level shifting circuit for adjusting a voltage level of an original input signal to generate a first input signal and a second input signal. The first input signal is identical to the original input signal except for referring to a first reference level. The second input signal is identical to the original input signal except for referring to a second reference level. In response to the first input signal and an oscillating signal, a first control circuit generates a first width-limited PWM signal for controlling a first half-bridge switching circuit. In response to the second input signal and the oscillating signal, a second control circuit generates a second width-limited PWM signal for controlling a second half-bridge switching circuit.
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Ho Jung-Dar
Juang Feng-Rurng
Aimtron Technology Corp.
Hsu Winston
Pascal Robert
Wong Alan
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