OT-- need plans for a wireless switch

From: Dwight K. Elvey <dwightk.elvey_at_amd.com>
Date: Fri Jul 18 11:53:00 2003

>From: "Fred Cisin" <cisin_at_xenosoft.com>
>
>On Fri, 18 Jul 2003, Mark Firestone wrote:
>> I always wondered how they hooked up wiring to things that rotate, like
>> helicopter blades. With brushes?
>
>by periodically running it in reverse to untwist the wires?

Hi
 I'm not sure that they run wires to the blades of helicopers.
If it is current caring wire, they most often use brushes.
For signal lines and low power, rotory tansformers are
common.
 For autos, it is either a wire or brushes. This depends
on the manufactures choice. Both have relaibility issues.
Dwight


>
>> >I'm trying to put a push-to-talk switch on the steering wheel of my
>> >car so I can key the 2-meter ham radio while keeping both hands
>> >on the wheel. I've got a little boom mic and have built an interface
>> >box, but how to mount the switch has me stumped.
>
>disconnect the horn and use its button
Received on Fri Jul 18 2003 - 11:53:00 BST