Title:
POWER SUPPLY
Document Type and Number:
Japanese Patent JP2007059810
Kind Code:
A
Abstract:
To provide a power supply capable of reducing noise generated from a capacitor in charging and discharging to the capacitor.
Capacitors C21, C22 are mounted inside a plastic case 56, and are disposed so as to allow a distance between them to be (1/2)×λ×(2n-1). λ represents the wavelength of a carrier noise generated from the capacitors C21, C22 and is calculated by using a relational expression of λ=V/fc on the basis of a carrier frequency fc and a propagation velocity V. That is, the capacitors C21, C22 are disposed inside the plastic case 56 so as to allow the distance between the capacitors C21 and C22 to be the odd multiplication of half-wavelength of the carrier noise.
More Like This:
Inventors:
SAKATA KOICHI
Application Number:
JP2005246296A
Publication Date:
March 08, 2007
Filing Date:
August 26, 2005
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01F7/18; H02J7/00; H02M3/155; H02M7/48; B60L15/00
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Tadashi Muto
Toshio Morita
Tadashi Muto
Previous Patent: COLORING METHOD OF SOFT MAGNET AND ITS PRODUCT
Next Patent: SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME
Next Patent: SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME