Re: Alternating relay
- From: "Rich Grise, but drunk" <yahright@xxxxxxxxxxx>
- Date: Sat, 28 Jan 2006 19:07:51 GMT
On Fri, 27 Jan 2006 03:16:41 -0800, kell wrote:
> Ryan wrote:
>> Is there a stock item which directs voltage onto one wire the first time
>> it is given power, and then to another wire the second time when the
>> item is given power?
>>...
>> Back and forth at infinitum so the load is distributed evenly over time.
>
> I used an alternating relay once that had a single coil. When actuated,
> the solenoid pulled on an alternating mechanism with two latching
> positions, which would reverse every time you actuate the coil.
D'oh! Of course! A racheting relay - there's a solenoid that pulls in
a pawl that engages a cam on a wheel with a detent. Every time the
solenoid is energized, the cam advances by one setpoint.
You can control an arbitrary number of functions this way, but all
you really need are the two contacts - to use a linear solenoid to
drag a circular cam around, you'd probably want at least 4 or more
positions.
I have no idea if anybody makes anything like that anymore, but if
you're adventurous, and good with tools, and have parts and materials
on hand, you could make one in a day. :-)
Good Luck!
Rich
.
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- From: Ryan
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