FIELD: shielding computer engineering modules. SUBSTANCE: window 2 in case 1 is closed with shutter 3 mounted on inner side of case 1 in guides 4 and 5. Shutter 3 is locked in extreme positions by means of four spring-loaded balls which simultaneously hold shutter 3 tight against case 1 thereby affording reliable shielding. Microswitch 8 is provided for the same purpose and functions to turn on power supply only when window 2 is tightly closed by shutter 3. EFFECT: improved efficiency of shielding and simplified design. 5 dwg
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