Title:
電力増幅回路
Document Type and Number:
Japanese Patent JP4072765
Kind Code:
B2
Abstract:
A switching device operates for selectively connecting either a low-voltage power supply or a high-voltage power supply to a power amplifier. A signal voltage is generated in response to a voltage outputted from the power amplifier. A reference-voltage generation circuit operates for generating a positive-circuit-side reference voltage and a negative-circuit-side reference voltage. A control circuit operates for comparing the signal voltage with the reference voltages and controlling the switching device in response to the results of the comparison. The reference-voltage generation circuit includes a first voltage regulating circuit connected between a positive side of the low-voltage power supply and a first circuit point subjected to a negative potential for generating the positive-circuit-side reference voltage, and a second voltage regulating circuit connected between a negative side of the low-voltage power supply and a second circuit point subjected to a positive potential for generating the negative-circuit-side reference voltage.
Inventors:
Taiji Kuribayashi
Application Number:
JP2003133216A
Publication Date:
April 09, 2008
Filing Date:
May 12, 2003
Export Citation:
Assignee:
Victor Company of Japan, Ltd.
International Classes:
H03F1/02; H03F1/30; H03F3/183; H03F3/217; H03F3/30
Domestic Patent References:
| JP8111615A |
Attorney, Agent or Firm:
Wataru Hatori