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VK2AAB > INFO 27.07.02 02:54l 19 Lines 635 Bytes #999 (0) @ WW
BID : 10131_VK2AAB
Read: DB0FHN GUEST
Subj: Re: Switches Up for ON & Vice Versa
Path: DB0FHN<DB0ZWI<DB0HOT<DB0MRW<OK0PKL<OK0PPL<RZ6HXA<SP7MGD<ON0BEL<KD4GBA<
ZL2BAU<ZL2BAU<VK2AAB
Sent: 020726/2138Z @:VK2AAB.SYD.NSW.AUS.OC #:10131 [SYDNEY] FBB7.00i $:10131_VK
From: VK2AAB@VK2AAB.SYD.NSW.AUS.OC
To : INFO@WW
Many many moons ago I remember in my apprentiship class this very question
came up.
The answer was quite simple:
Beacause the contact mechanism in the switch is heavier than the tumbler knob
that the user presses, if the mechanism that locks the switch in either
position fails, then the heavier contact assembly will fall.
As the contactassembly ususally move in the oposite direction to the knob then
the knob will go up into the off position.
This certainly applied to the switches current at the time. I am not sure
that it is still relevant.
73 Barry VK2AAB
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