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Getting a light to work
By GeeMac, Section Light Posted on Sat Apr 26th, 2008 at 05:49:15 PM MST
12 volt light

On spec, I bought a 12 Volt auto trouble light bulb. It the same size as the standard 120 vac bulbs we've had since Edison.
I have 6 twelve volt batteries linked to produce twelve volts. The amperage will be high though. Is there something I should do to reduce the amperage before I connect the light bulb?

Getting a light to work | 3 comments (3 topical, 0 editorial)

Re: Getting a light to work (3.00 / 0) (#1)
by richhagen (richhagen (a t) Juno.com) on Sat Apr 26th, 2008 at 12:53:18 PM MST
(User Info)

If the batteries are connected in parallel, and the bulb is rated for 12VDC then the bulb will be fine. Keep in mind that a charging 12V battery bank will be at a higher voltage while being charged though. Most items rated for automotive type use can handle that higher voltage. The internal resistance in the bulb will hold the current down if the incandescent type bulb is operating within the voltage parameters for which it is rated. Rich
'A Joule saved is a Joule made'

Re: Getting a light to work (3.00 / 0) (#2)
by tecker on Sat Apr 26th, 2008 at 12:55:59 PM MST
(User Info)

No you can go with it . I 'm a fan of using resistive devices in series with the the charger . Lights don't always fit in there though .

Re: Getting a light to work (3.00 / 0) (#3)
by terry5732 on Sat Apr 26th, 2008 at 03:59:42 PM MST
(User Info)

Your light will only draw the amps it requires. You needn't do anything additional.

Getting a light to work | 3 comments (3 topical, 0 editorial)

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