Title:
LINE FILTER AND ITS IMPEDANCE CHANGING METHOD
Document Type and Number:
Japanese Patent JPH07115339
Kind Code:
A
Abstract:
PURPOSE: To provide a line filter and its impedance changing method to freely set a specific band width or attenuation quantity without using any ground.
CONSTITUTION: A line filter 11 contained in a single-phase power cord 1 includes the 1st and 2nd transformers 13 and 15 which use the wires 7 and 9 connected to the plugs 3 and 5 that are inserted to a commercial power supply as the primary coils respectively, an amplifier part 17 which amplifies the noise current that is picked up by the secondary coil of the transformer 13, and a power supply part 19 which supplies the power to the part 17. The current amplified at the part 17 is sent to the secondary coil of the transformer 15.
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| JPS51149525 | SELF COLD DRYING TRANSFORMER |
| JP2007005564 | SOUND ABSORPTION ARRANGEMENT |
Inventors:
SENDA TAKEO
Application Number:
JP25991993A
Publication Date:
May 02, 1995
Filing Date:
October 18, 1993
Export Citation:
Assignee:
HANSHIN DENSEN KK
International Classes:
H01F27/33; H03H7/09; H03H11/04; H03H11/12; (IPC1-7): H03H7/09; H01F27/33; H03H11/04; H03H11/12
Domestic Patent References:
| JPS5354447A | 1978-05-17 | |||
| JP46027687A |
Attorney, Agent or Firm:
Fukami Hisaro (2 outside)