H - Electricity – 03 – F
Patent
H - Electricity
03
F
330/34
H03F 1/38 (2006.01) H03F 1/02 (2006.01) H03F 3/50 (2006.01)
Patent
CA 1181139
- 28 - Abstract of the Disclosure A power amplifier in which a DC power supply is coupled to a load through a switching element, a smooth- ing circuit, and an output amplifying element. The out- put amplifying element receives an input signal voltage to be amplified. A voltage detecting circuit is pro- vided which compares a feedback voltage proportional to an output voltage of the smoothing circuit with the input signal voltage to switch the switching element, thereby varying both the power supply voltage of output amplifying element and the load output voltage in accor- dance with the input signal voltage. As the output voltage of the smoothing circuit is compared with the input signal voltage, the delay of the change of the power supply voltage of the output amplifying element relative to the load output voltage can be reduced, and the generation of distortion and the lowering of effi- ciency can be suppressed.
393088
Endoh Kenjiro
Kashiwagi Seigou
Ridout & Maybee Llp
Tokyo Shibaura Denki Kabushiki Kaisha
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