DV Info Net

DV Info Net (https://www.dvinfo.net/forum/)
-   Photon Management (https://www.dvinfo.net/forum/photon-management/)
-   -   Making a ring light with LED's...some advice (https://www.dvinfo.net/forum/photon-management/83833-making-ring-light-leds-some-advice.html)

David Delaney January 13th, 2007 05:47 PM

Making a ring light with LED's...some advice
 
I want to make a ring light for the front of my HC1 camera. I have a bunch of LED lights from the electronic's store and I want to fashion them in a series with a battery pack (maybe 2 AAA's) for the off/on. Is there anything I need to know about setting these up in series? Is a plain soldering job with copper wire going to do?

Thanks in advance.

Greg Boston January 13th, 2007 06:23 PM

You don't wire them in series, you wire them in parallel. Check the data sheet for the LEDs that you have. They usually require an inline resistor on the anode side for current limiting.

-gb-

David Delaney January 13th, 2007 09:24 PM

They didn't come with any data sheet. Just the little lites. I have wired them in parallel with a battery casing with 2 AA batteries. They seem to light up well, but I think they aren't quite as bright as they should be. I am probably doing something wrong....

Rush Hamden January 14th, 2007 08:18 AM

Generally, LED circuits require a PWM (Pulse Width Modulation) driver circuit to modulate the voltage and keep it at a steady frequency. That way they don't flicker with changing voltage from the batteries, until the batteries are almost dead. That's the little IC board you see in all the LED flashlights.

Connecting the LED's in parallel is necessary so that you can use a simple AA battery pack at 3V, and draw more amperage from it than voltage. Otherwise, in series, you would have to keep adding 1.5V battery per LED light.

One more piece of advice: make sure the LED's are 5000K white with a high CRI, otherwise people's skintones will look awful and purple.

David Delaney January 14th, 2007 10:30 AM

The store owner told me they come in micro candles instead of wattage I believe./..

Also just went and bought a slew of dollar store LED key chain lights because the electronic store is closed. They are cheap and pretty bright. Going to see how they turn out...


All times are GMT -6. The time now is 01:51 PM.

DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network