Title:
AIR CONDITIONING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/015638
Kind Code:
A1
Abstract:
A level conversion circuit (17) of an air conditioning system (11) that achieves the transmission and reception of a signal between a primary air conditioner (11) and a secondary air conditioner (31) by switching on and switching off a signal current that flows from the primary air conditioner (11) to the secondary air conditioner (31) via a transmission line (L1) discharges a charge accumulated in a capacitor (C1) by turning on a phototransistor of a photocoupler (181) that is connected in parallel with the capacitor (C1) when a transmission signal (Tx1) sent from a primary controller (15) is converted to a signal level corresponding to a signal current (Is) being off.
Inventors:
MUKAI TAKUYA (JP)
KOIZUMI YOSHIAKI (JP)
KOIZUMI YOSHIAKI (JP)
Application Number:
PCT/JP2013/071016
Publication Date:
February 05, 2015
Filing Date:
August 02, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F24F11/02
Foreign References:
| JP2003287265A | 2003-10-10 | |||
| JP2011211401A | 2011-10-20 | |||
| JPH08130782A | 1996-05-21 |
Attorney, Agent or Firm:
KIMURA MITSURU (JP)
Mitsuru Kimura (JP)
Mitsuru Kimura (JP)
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