Why Does My 12V LED Light Strobe When Connected to a 24V Source?

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SUMMARY

The discussion centers on the issue of a 12V LED circuit board strobing when connected to a 24V output from a ceiling fan. The strobing occurs because the 12V LED board is not designed to handle the higher voltage, leading to inconsistent power delivery. When connected to a proper 12V source, the LED remains lit constantly. To resolve the strobing issue, users need to either find a way to reduce the voltage to 12V or use a compatible LED board designed for 24V operation.

PREREQUISITES
  • Understanding of LED circuit board specifications
  • Knowledge of voltage compatibility in electrical components
  • Familiarity with DC and AC power supplies
  • Basic electronics skills for troubleshooting circuit issues
NEXT STEPS
  • Research voltage regulators suitable for reducing 24V to 12V
  • Explore compatible 24V LED circuit boards for ceiling fan applications
  • Learn about the differences between DC and AC LED circuit boards
  • Investigate the use of capacitors to stabilize LED power delivery
USEFUL FOR

This discussion is beneficial for electrical engineers, DIY enthusiasts, and anyone working with LED lighting systems who need to understand voltage compatibility and circuit design.

vjventrella
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I have a ceiling fan that has a 24v output. It came with a led circuit board to light, however the light is very dim. I purchased a 12v led circuit board to increase the lighting. Now I know that the light is 24v and the new led board is 12v but it was a direct plug in so I thought I would try it out. When I plugged it in, the led lights up, however it strobes. It does not do this when hooked up to a 12v source, it remains lit constantly. Is there anything I could do to stop the strobe and keep it constantly lit? or is there a simple solution to get the voltage down to 12v without taking up a lot of space. Keep in mind that there is a glass cover that needs to go over the light, so I can’t take up too much space. Any suggestions? Thanks.
 
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Hi
I think we need to know more about the problem before you can get a useful answer.
What do these two circuit boards have on them? It strikes me that the 12V board is for operating with a DC supply but the 24V board can use AC. Are there additional components on the 24V board?
Are the LEDs for indication or illumination?
 
vjventrella said:
the light is 24v and the new led board is 12v but it was a direct plug in so I thought I would try it out. When I plugged it in, the led lights up, however it strobes.
How many times/sec does it strobe? Approximately will do.
 
Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?

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