12V RGB spots

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AshaiRey
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12V RGB spots

Post by AshaiRey »

Hi,

I have a new 12V RGB (ms16 fitting) lamp that should cycle through several colors.
However when i attach it to a 12V car battery then it will only give green light and no color cycling.
The dealer tells me that i should use a ledtrafo for this what i think is nonsense.
I've attached it also to a stabilised power supply but the same effect.
Have anyone an idea why this happening?
Bram
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Noel
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Re: 12V RGB spots

Post by Noel »

Maybe the "ledtrafo" is making use of 50hz (comes with your 240AC), to do the timing for the color cycle?
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AshaiRey
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Re: 12V RGB spots

Post by AshaiRey »

That was my thought too but attaching it to a stable power supply don't solve it
Bram
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Jeroen Bartels
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Re: 12V RGB spots

Post by Jeroen Bartels »

A car battery is direct current (DC-'gelijkstroom') and so is a stabilized power supply.
You probably need alternating current (AC-'wisselstroom'). Mayby on the package it says what you need ('12V=' is direct current, 12V (with an S on it's side) is alternating current)
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AshaiRey
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Re: 12V RGB spots

Post by AshaiRey »

The box tells me '12V AC/DC'
I find that a bit wierd because a led, as a standalone component needs DC to work.
I am a bit reluctant to put 12V AC on it to try it out. It goes all against my instincts that i have build up with electronics in the past 30 years. :idea:
Bram
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Re: 12V RGB spots

Post by AshaiRey »

By connecting a AC source or a DC soource with a heavy 50Hz rimple the color cycling of the lamp starts.

Problem solved.
Thx for submitting your ideas.
Bram
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