Electronic apparatus for controlling mechanical and electrical c

Details Electronic apparatus for controlling mechanical and electrical c Electronic apparatus for controlling mechanical and electrical c

1984-01-31

1986-01-07

Pellinen, A. D.

Electricity: circuit makers and breakers

Multiple circuit control

Operating means

200 50A, 200334, H01H 920

Patent

active

045635528

ABSTRACT:
An electronic apparatus such as an electronic calculator has a detachable electric member such as an external memory card and, to avoid unfavorable effects such as destruction of memory at attaching or detaching of the electric member, the apparatus is provided with a switch which automatically turns off the power supply to the electric member when it is being attached to or detached from the apparatus.

REFERENCES:
patent: 1904911 (1933-04-01), Willoughby
patent: 3192334 (1965-06-01), Dimond et al.

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