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Flyback start

Flyback start

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Just to simplify the circuit, I didn’t bother with an ignitor, opting for a flyback start instead

C73AE09C-0D4E-4CEF-A362-BDAE0F4D062C.jpeg 6267D9DA-88BE-4D9C-A672-B35CB0596347.jpeg A1F8F2FF-692E-420F-8559-7904EADAE489.jpeg 89A63D4B-72F2-4CD5-BDEE-2E7FE74FA8D7.jpeg

Light Information

Light Information

Manufacturer:Sylvania
Model Reference:BA 150 SE NHR
Lamp
Lamp Type:Studio halide
Base:GY 9.5
Fixture
Ballast Type:HPS gear
Electrical
Wattage:150
Voltage:95
Current:1.8
Optical
Lumen Output:12,400
Color Temperature:5600K
Color Rendering Index:Ra 90

File information

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Filename:A1F8F2FF-692E-420F-8559-7904EADAE489.jpeg
Album name:AngryHorse / Metal halide lamps and lighting
Keywords:Lamps
File Size:318 KB
Date added:Jun 08, 2019
Dimensions:2464 x 1848 pixels
Displayed:116 times
Date Time:2019:06:08 18:54:35
DateTime Original:2019:06:08 18:54:35
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ISO:125
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rjluna2
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Robert


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Jun 10, 2019 at 05:41 AM Author: rjluna2
Cool effect

Pretty, please no more Chinese failure.

halofosfaatti
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Jun 10, 2019 at 11:20 AM Author: halofosfaatti
This kind of experiment can produce X-rays, if the outer bulb has vacuum. http://danyk.cz/rtg4.html

Too many things are secret. Only open information can really preserve old technology.

I like fluorescent and other conventional lighting and old electronic equipment. Today's things are not made to last.

AngryHorse
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Rich


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Jun 10, 2019 at 05:21 PM Author: AngryHorse
Interesting , I wasn’t aware of that, this test run isn’t good on the eyes as it is, due to the high amount of UV radiation these lamps put out, but I just had to see this thing running , their a stunning powerful little lamp.

Current: UK 230V, 50Hz
Power provider: e.on energy
Street lighting in our town: Philips UniStreet LED

"Beauty fades, dumb is forever".......Judge Judy Cheesy

dor123
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Jun 10, 2019 at 06:44 PM Author: dor123
I hope that you use a UV protection when running the lamp.
During normal operation, the lamp shouldn't produce X-rays, even if it have vacuum.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

halofosfaatti
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Jun 10, 2019 at 09:34 PM Author: halofosfaatti
I just had to say that because I have seen video about HPS producing significant amount of X-rays, when operated on tesla coil. There is link to it on my previous reply. Flyback is probably not that dangerous, and possibly does not generate any, but there is always the risk with high vacuum. X-rays are not generated during normal operation, only when the flyback is on. Normal ignitors have maximum voltage of 5 kV, so there is no harmful X-rays at any condition.

Too many things are secret. Only open information can really preserve old technology.

I like fluorescent and other conventional lighting and old electronic equipment. Today's things are not made to last.

merc
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Adam


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Jun 11, 2019 at 12:46 AM Author: merc
@AngryHorse: Interesting effect!
@halofosfaatti: Interesting link. It's in my native language and he means it. Maybe a good warning for people who like to experiment a lot a don't have the proper knowledge.

Not a misoLEDist...

AngryHorse
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Rich


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Jun 11, 2019 at 01:12 AM Author: AngryHorse
@dor, no I didn’t use any UV protection!, as Photinicinduction used to say, “it’s all in the name of science “ lamp collecting would be boring without doing slightly dangerous stuff like this!!

Current: UK 230V, 50Hz
Power provider: e.on energy
Street lighting in our town: Philips UniStreet LED

"Beauty fades, dumb is forever".......Judge Judy Cheesy

dor123
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Jun 11, 2019 at 02:57 AM Author: dor123
Even a brief exposure to UVC and vacuum UV, can cause eye and skin damage.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

halofosfaatti
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Jun 11, 2019 at 03:32 AM Author: halofosfaatti

Even a brief exposure to UVC and vacuum UV, can cause eye and skin damage.


Do these produce UV-C? I don't think so. If there is UV-C rays, they usually produce ozone smell. In the old times bare mercury tubes were used for sunlamps. These produced that ozone smell. Safety goggles were used even then. But the UV radiation may still be very strong near the lamp, if it doesn't have UV blocking glass. I don't recommend playing with UV.

Too many things are secret. Only open information can really preserve old technology.

I like fluorescent and other conventional lighting and old electronic equipment. Today's things are not made to last.

dor123
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Jun 11, 2019 at 03:47 AM Author: dor123
The outerbulb is quartz, since it is very small and close to the insanely hot arctube. If it have UV dopants, it should glow bluish during run-up like all compact MH and CMH lamps.
Here I don't see any glowing UV dopants. Also some pure quartz block the Vacuum UV that produces ozone, but not the longer wave UVC.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

halofosfaatti
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Jun 11, 2019 at 06:35 AM Author: halofosfaatti
Ok. So these dopants cause the glow of some MH lamps. I have noticed that also.

Too many things are secret. Only open information can really preserve old technology.

I like fluorescent and other conventional lighting and old electronic equipment. Today's things are not made to last.

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