Title:
ノイズフィルタ回路を備えた電気機器
Document Type and Number:
Japanese Patent JP7140700
Kind Code:
B2
Abstract:
To provide an electric apparatus with a noise filter circuit capable of being immune even to a dielectric voltage resistance test while suppressing increase of a leak current in a standby state.SOLUTION: An air conditioner 100 comprises an inverter circuit 6, and a noise filter circuit 4 suppressing conduction of high frequency noise of the inverter circuit 6 on AC power lines LN1 and LN2 for supplying voltage based on output voltage of a commercial AC power source 1 to the inverter circuit 6. The noise filter circuit 4 includes capacitors C3 and C4, a relay RY1 and a positive characteristic thermistor PTC1. The capacitor C3 is provided between one AC power line LN1 and a main body ground G, and the capacitor C4 is provided between the other AC power line LN2 and the main body ground G. The relay RY1 and the positive characteristic thermistor PTC1 are connected in parallel with each other between a connection node N1 between the capacitor C3 and the capacitor C4, and the main body ground G.SELECTED DRAWING: Figure 1
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Inventors:
Masaharu Watanabe
Application Number:
JP2019049694A
Publication Date:
September 21, 2022
Filing Date:
March 18, 2019
Export Citation:
Assignee:
Sharp Corporation
International Classes:
H02M1/12; H02M7/48
Domestic Patent References:
| JP2008301585A | ||||
| JP11173588A | ||||
| JP2006500892A |
Attorney, Agent or Firm:
Patent Business Corporation Ark Patent Office
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