Lamps, LEDs and Fluorescents
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- เผยแพร่เมื่อ 4 ส.ค. 2024
- An overview of three main sources of light in the theater and why two of them really don't like being put on a normal dimmer.
Since this video was put up I have learned that there are some arc lamp ballasts that have adjustable brightness, but they can't be dimmed out, just adjusted between 100% and ~%50. You learn something new every day.
EDUCATORS - Feel free to use this video in your classes! That's why I started making these.
Thanks for this! Great content! I am a professor of lighting design, and will absolutely be sharing this with my lighting students on Monday! Well done!
Absolutely love your videos. The bit about the hilarious inefficiency of making saturated blue with halogen fixtures cracks me up every time. It never gets old.
And your face scoffing at “white” LED is priceless.
I may have discovered a worse one! One of our painters brought in a very old UV light, which as far as I could tell, was just a halogen lamp with an incredibly thick glass filter in front of it, blocking out everything but the UV. It drew a lot of power and got stupidly hot and she was actually kind of amazed when I showed her the UV LED units you could now get for $20. She's teaching again this semester and I'm going to ask if she still has it and if so, can I take a closer look at it.
The painter in question let me have the lamp! It's a high intensity discharge lamp, not a tungsten, but it's still a very bright light with a very thick glass filter in front of it to filter out everything that's not UV. It gets _very_ warm.
Thanks
Great set of videos! I have watched them all and learned quite a bit.
I have struggled with connecting low wattage lights (LED and conventional) to different modern dimmers without ghosting or light flicker. Even at a concert hall with modern electronic dimmers.
Would it be possible to do a talk on the difference in modern dimmers (something around 1970 to now)?
I've got a question: what sort of equipment uses those Xenon lamps? I've tried looking for Xenon-powered stage lights to no avail, since I'd love one or a few for a collection. If they're built for general-purpose stage illumination, would you have a make & model, by chance?
If I can't find any, I might just be forced to build one myself.
A lot of older moving lights use them. They were fairly common in followspots as well. I think the lamp in the video is out of one of our Martin MAC 600s. ETC also made a HID retrofit kit for Source 4s, but it doesn't seem to be available anymore.
Ah, thank you! I've been able to find the keywords that I need from that Martin unit's model number.
“Some have vacuum inside”….
That is a weird thing to say when you think about it.
18:04:... Read the Instructions... RTFM!
It is good to see you are using an old oscilloscope......