12v light dimmer

Hi,1st, sorry for my poor english and congratulatios for you forum (i´m new member). I ask if anybody can help me(i don´t understand nothing, nothing about electronic? Who can draw a diagram for a lantern light dimmer? It works with a 12v 50w halogen lamp, the idea is when to regulate dimmer for 50%, for example, and this reduce the consume of battery. I have searched for examples but how i don´t understand anything and the diagrams always have more elements that i need and i can´t change them. Please help meArtilheiro- Who don't know anything about electronic

Have you tried connecting 2 bulbs in series?  If they do light up in this configuration, the current consumption will be 50% of one bulb.

I know that chance but i just can connect 1bulb. That is the problem.The system is 10 batteries 1.2v (12v) and 1 bulb(just one)50w halogenArtilheiro- Who don't know anything about electronic

you need a PWM circuit, the typical resistor type dimmer will just waste the same amount as heat, as opposed to actually reducing consumption. I wouldn;t recommend it though. double your batteries, or set the 12v pack up as twin 6 volts for more reserve capacity, then look for a 6v 50w bulb.92 BMW 525iT

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