Re: circuit for running two bulbs from one run of 2 conductor wire?
- From: "jim.isbell" <jim.isbell@xxxxxxxxx>
- Date: 22 Aug 2006 07:41:26 -0700
Heikki wrote:
ray lunder wrote:
I saw this once using an off-on-off 3 pole switch (? it had 6 lugs)
and some diodes but I can't remember where. The switch is connected to
a 2 conductor wire that goes to a lense with two different bulbs in
it. In one switch position one bulb lights, in the other position the
first bulb goes off and the second bulbs lights instead. (the bulbs
could be different wattage or color). In the center position both
bulbs are off. You saved one wire run. Any ideas?
Elementary, dear Watson: Connect diodes in series with the bulbs, so they
only work in one "direction". Depending which of the two wires you connect
to plus and which to minus, one or the other bulb lights.
-H
Its easier than that and it doesnt require diodes. With 6 lugs you are
talking about a 2 pole 3 throw switch. connect the two wires to the
wipper lugs and one bulb to each of the pairs at the ends. There are
no lugs for the center position.
BUT, you really need only a single pole three throw switch because you
only need to switch one of the wires, the other can go to both bulbs
all the time. AND again, you dont need diodes whether you are talking
DC or AC
.
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