Title:
DAMPING INDUCTANCE REDUCTION CIRCUIT FOR ELECTROMAGNETIC CONVERSION OSCILLATOR
Document Type and Number:
Japanese Patent JP3450077
Kind Code:
B2
Abstract:
PURPOSE: To cancel or reduce the reactive power based on the damping inductance without capacitances by providing an inductance, which is connected in parallel to an electromagnetic conversion oscillator, and a phase conversion means which inverts the phase of the current flowing to this inductance.
CONSTITUTION: When an AC drive power source 4 is driven, a current I is supplied to an electromagnetic conversion oscillator 1 and an inductance Ls, and the phase of the current flowing to the inductance Ls is changed by 180° by a phase conversion means 5. When the phase of this current is changed by 180°, the reactive current flowing to a damping inductance Ld is equivalently cancelled when viewed from the AC drive power source 4. In this case, the condition to cancel the damping inductance Ld is Ls=Ld. Even if the inductance Ls doesn't completely coincide with the damping inductance Ld, the reactive current due to an influence of the damping inductance Ld is reduced independently of the frequency of the drive power source.
Inventors:
Yoshiro Tomikawa
Application Number:
JP1109395A
Publication Date:
September 22, 2003
Filing Date:
January 26, 1995
Export Citation:
Assignee:
Yoshiro Tomikawa
International Classes:
G01C19/56; G01C19/5776; H04R3/08; (IPC1-7): H04R3/08; G01C19/56; G01P9/04
Domestic Patent References:
| JP4266299A | ||||
| JP62109412A | ||||
| JP8307199A | ||||
| JP58125485U | ||||
| JP59106286U |
Attorney, Agent or Firm:
Masatake Shiga (1 person outside)
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