Title:
受信装置
Document Type and Number:
Japanese Patent JP4368277
Kind Code:
B2
Abstract:
In an LNB 10, a power supply circuit 12 has pre-regulators PRa and PRb provided one for each of power supply paths respectively from ports 13a and 13b, a bypass portion BP that, when the potential difference between the output terminals of the pre-regulators PRa and PRb is greater than a predetermined threshold value, short-circuits together those output terminals, and main regulators REG1 and REG2 provided in the stage following the bypass portion BP to generate, from the output voltages Va' and Vb' of the pre-regulators PRa and PRb, drive voltages VA and VB for the internal circuits A and B. With this circuit configuration, simple though it is, even if there are instantaneous variations in the voltages fed from a plurality of receivers connected, no variations appear in the currents respectively extracted therefrom.
Inventors:
Masayuki Kozaki
Jiro Miyahara
Jiro Miyahara
Application Number:
JP2004262032A
Publication Date:
November 18, 2009
Filing Date:
September 09, 2004
Export Citation:
Assignee:
Sharp Corporation
International Classes:
H04B1/18
Domestic Patent References:
| JP2004235801A |
Attorney, Agent or Firm:
Shizuo Sano
Inoue On
Inoue On