Re: circuit for running two bulbs from one run of 2 conductor wire?

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
.

Relevant Pages

  • Re: Mast wiring
    ... Basic method: You need two diodes. ... Connect both diodes to wire A. They should go in opposite directions, ... Connect the other ends of the two bulbs to wire B. ... Also connect wire A to the moving contact of the switch in the relay. ...
    (uk.rec.sailing)
  • Re: Grass growing though chicken wire covering bulbs, best way to deal with it?
    ... I was thinking after the bulbs have bloomed in spring, foliage died and been given a spring feeding to cover that part with heavy black plastic until the next spring if I can't get it under control. ... I would like to be able to remove the chicken wire at some point, but am afraid if I don't, the critters will just dig them up in a subsequent year. ... I could cover it with a layer of topsoil, but that won't solve the grass problem. ...
    (rec.gardens)
  • Re: Grass growing though chicken wire covering bulbs, best way to deal with it?
    ... I was thinking after the bulbs have bloomed in spring, foliage died and been given a spring feeding to cover that part with heavy black plastic until the next spring if I can't get it under control. ... I would like to be able to remove the chicken wire at some point, but am afraid if I don't, the critters will just dig them up in a subsequent year. ... I could cover it with a layer of topsoil, but that won't solve the grass problem. ...
    (rec.gardens)
  • Re: Mast wiring
    ... Connect both diodes to wire A. They should go in opposite directions, ... that on the other diode faces away from wire A. ... Connect the other ends of the two bulbs to wire B. ... Also connect wire A to the moving contact of the switch in the relay. ...
    (uk.rec.sailing)
  • Re: Bally Vector GI lighting too bright to look at
    ... measure hot to common at the socket, you don't measure AC to ground. ... through a board and right out to bulbs. ... TP4 on the rectifier board with respect to ground (braided wire inside ... Both lamp drivers are for the Controlled Lamps, ...
    (rec.games.pinball)