So I replaced the lights on my Mth subway train, But for some reason there is a weird "Buzzing" sound when I run the train along the tracks and some flickering, But I did install a capacitors, Although im not sure if it does the trick, its a 220uf 35v capacitor. Is it because the LED draw more power then incandescent bulbs?. Watch video to see what it does.
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I get an error on the link, so I can't see anything.
I get it fine. I use a Mac with safari.
Me too. It sure sounds like sparking although I can't see any.
It would help to see how it's wired, not a moving thing that you can't really tell anything from.
Everything is wired fine, its Inductor->Diode->Capictor->LED lights. It worked fine with a LED light but with a LED strip it makes that sound. I think its cause its drawing to much power. has any one had this problem?
Ill try to remove the Capacitor, But With the Diode the voltage is cut in half to so its really 9 Volts DC +.
You really should have current limiting. The buzzing is probably the LED's crying out in pain.
You really should have current limiting. The buzzing is probably the LED's crying out in pain.
Then why does it only do it when the car is rolling? Are you sure it's not some kind of arching in the strips as they are flexing from being loose as the car is rolled?
Are you using a single diode (ie a half wave rectifier) in your circuit? Or are you using a full wave bridge rectifier?
Are you saying that the sound is coming from the centre rail pickup rollers?
if so, then I would think that you might have a bad or dirty connection there, and the extra current draw is causing some arcing. Have you tried thoroughly cleaning the pickups, and checking for good connections? (Under load)
If the pickups are making that sound, I can only guess you're drawing more current than is good for the LED's! I have a bunch of passenger cars with those strips with proper current limiting, and I've never heard them scream for mercy as they roll.
If the pickups are making that sound, I can only guess you're drawing more current than is good for the LED's! I have a bunch of passenger cars with those strips with proper current limiting, and I've never heard them scream for mercy as they roll.
Are you using a resisitor or a voltage regulator or LM2596 Module?
I use a constant current regulator, typically I run an 18" passenger car on 20ma of total current to the lights.
If there's that much repeated inrush current to the cap, a lot of current is being consumed by the lighting. Given that these LED strips should be using a maximum of 20ma for every three bulb group, I'd suspect that means they're getting way more power than they are rated for.
If there's that much repeated inrush current to the cap, a lot of current is being consumed by the lighting. Given that these LED strips should be using a maximum of 20ma for every three bulb group, I'd suspect that means they're getting way more power than they are rated for.
So I should do one of these 2 things?
Remove the capacitor Or
Reduce the amps coming to the LED lights? If so what Would I use to reduce amps but not voltage, If thats possible.
I use a constant current regulator for my passenger car conversions. Removing the capacitor won't fix the basic issue of providing too much current to the LED's.
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