Title:
AUDIBLE BAND SIGNAL GENERATOR AND AUDIOMETER
Document Type and Number:
Japanese Patent JP2018125928
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress generation of abnormal noise in an inductance element while using a switching regulator in a power supply circuit.SOLUTION: A power supply circuit 2 supplies power supply power to an audible band signal generator 1 with a predetermined output voltage of a constant voltage. In the power supply circuit 2, each of switching regulators 11, 14 has an inductance element through which a switching current by a switching element flows. Current limiting circuits 12, 15 respectively limit the output currents of the switching regulators 11, 14 to a predetermined value or less. Capacitors Cp, Cn store electric charges by an output current limited by the current limiting circuits 12, 15. Linear regulators 13, 16 generate the predetermined output voltage of the power supply circuit 2 by using a voltage across the capacitors Cp, Cn as an input voltage.SELECTED DRAWING: Figure 1
Inventors:
SUGIMOTO MASAMI
HAMANAKA RYOICHI
HAMANAKA RYOICHI
Application Number:
JP2017014902A
Publication Date:
August 09, 2018
Filing Date:
January 30, 2017
Export Citation:
Assignee:
RION CO
International Classes:
H02M3/155
Domestic Patent References:
| JP2016226079A | 2016-12-28 | |||
| JP2000139023A | 2000-05-16 | |||
| JP2004147391A | 2004-05-20 |
Attorney, Agent or Firm:
Osamu Aoki