Title:
POWER SUPPLY BREAKING SYSTEM
Document Type and Number:
Japanese Patent JPS60117314
Kind Code:
A
Abstract:
PURPOSE:To prevent a fault due to the temperature rise within a housing and also to reduce the cost of a device by applying a common DC power supply only in case an AC power supply is given to an AC cooling fan within each housing and the temperature within the housing is lower than a normal level. CONSTITUTION:When an AC power supply is applied in a system, an AC switch 24 is first turned on for both a DC power supply housing 21 and a CPU housing 27 respectively. Then a switch detection sensor 26 detects that those switches 24 are turned on and sends a high-level signal to an AND circuit 31. Thus the conditions of the circuit 31 are released and the output of this circuit 31 is set at a high level. Therefore a DC power supply 22 works to supply the DC power to the housing 27 through a cable 32. In this case, the temperatures within both housing 21 and 27 are kept lower than a prescribed level. Therefore the output signal of a temperature sensor 25 is set at a low level, and the output signal of an OR circuit 30 is also set at a low level.
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Inventors:
HARA AKITOSHI
Application Number:
JP22404083A
Publication Date:
June 24, 1985
Filing Date:
November 30, 1983
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
G05F1/10; G05F1/569; (IPC1-7): G05F1/569
Attorney, Agent or Firm:
Noriyuki Noriyuki