Electrical transmission or interconnection systems – Switching systems – With operation facilitating feature
Patent
1992-11-12
1995-03-07
Pellinen, A. D.
Electrical transmission or interconnection systems
Switching systems
With operation facilitating feature
307139, H02J 300
Patent
active
053961072
ABSTRACT:
A power source system failing to become operable when only a primary A.C. power source is turned on, and made operable by turning on not only the primary A.C. power source but also a secondary power source is disclosed, in which initial-state-of-secondary-source setting means is previously set so that the initial state of the secondary power source at a time when the primary A.C. power source is turned on, is a desired one of an ON-state and an OFF-state, a system control part reads out the state of the initial-state-of-secondary-source setting means immediately after the primary A.C. power source has been turned on, and an ON-OFF control is performed for an ON/OFF switching circuit in accordance with the read-out state, to make the initial state of the secondary power source equal to the desired state. Thus, in a case where a controlled apparatus is required to become operable as soon as the primary A.C. power source is turned on, the initial-state-of-secondary-source setting means is set so that the initial state of the ON/OFF switching circuit is an ON-state, to make the controlled apparatus usable immediately without operating any operation switch, thereby improving the usability of the controlled apparatus.
REFERENCES:
patent: 4437018 (1984-03-01), Manley
patent: 4575640 (1986-03-01), Martin
patent: 5003192 (1991-03-01), Beigel
patent: 5099157 (1992-03-01), Meyer
patent: 5120983 (1992-06-01), Samann
Fleming Fritz M.
Hitachi , Ltd.
Pellinen A. D.
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