Electrical transmission or interconnection systems – Switching systems – Plural switches
Patent
1993-03-25
1995-01-24
Pellinen, A. D.
Electrical transmission or interconnection systems
Switching systems
Plural switches
307140, 361170, H04N 563
Patent
active
053844912
ABSTRACT:
A power source switch circuit can remember the last state a switch is in when main power is lost. A capacitor or battery is used to place the switch in its original position after the main power is restored.
REFERENCES:
patent: 5229654 (1993-07-01), Shimizu
Kabushiki Kaisha Toshiba
Kaplan Jonathan
Pellinen A. D.
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