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Knobel Perfektstart 2000 starter

Knobel Perfektstart 2000 starter

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As recently on the gallery various electronic starter circuits have been posted I've decided to show the knobel perfekt start 2000 version.
It works very well, it starts the tube like an electronic programmed start ballast.

KnobelRS.jpg PrfektStart2000.jpg Knobel.jpg

Light Information

Light Information

Manufacturer:Knobel
Model Reference:Perfektstart 2000
Physical/Production
Factory Location:Switzerland

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Filename:PrfektStart2000.jpg
Album name:Kappa7 / Gear
Keywords:Gear
File Size:503 KB
Date added:Feb 16, 2014
Dimensions:2018 x 2050 pixels
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dor123
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Feb 16, 2014 at 03:30 PM Author: dor123
It is strange that there are electrolytic capacitors inside the starter. Electronic starter tends to be much more reliable than electronic ballast, as it have fewer components, and usually the most prone to damage in electronic ballasts, is the electrolytic capacitor.

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.

Kappa7
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Feb 16, 2014 at 03:41 PM Author: Kappa7
Usually the electrolytic capacitor in electronic starters is used only for the preheating time. As it's not stressed at all it should have a very long life.
toomanybulbs
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Feb 16, 2014 at 11:08 PM Author: toomanybulbs
at least it looks like they used panasonic caps.what series?
i see the same color in ford 6.0 psd ficm but forgot the series
Medved
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Feb 16, 2014 at 11:46 PM Author: Medved
In the starters the capacitors are not exposed to high ripple currents, during normal operation they are even without any voltage on them. In HF ballasts the capacitor's core is usually ~10..20degC hotter than the surface and even the surface is ~20..30degC hotter than the surrounding air, all just because of the power dissipation inside. And the high ripple current mean the ESR has to stay very low in Ohms or below, otherwise it overheat way further and so usually explode.
In the starters you need just a ~2sec timer, so the circuit can tolerate ESR of 100's Ohm, so there is even way more room for the degradation, what mean longer service life as well. And because of the lower core temperature (by 20..50degC), the degradation is way slower as well. And as the capacitor allow way higher ESR, the intternal design has less restrictions, so it could be made more robust against aging in exchange for e.g. higher ESR.

No more selfballasted c***

monkeyface
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Feb 17, 2014 at 04:22 AM Author: monkeyface
Personally I have never seen any of these failed. There are stil plenty of them in use in streetlight laterns and roadsigns. Most of them get very rusty over the years.
I got several of these in various wattages including those for 2x18/20W. Some of them are NOS.
Kappa7
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Feb 17, 2014 at 12:52 PM Author: Kappa7
@toomanybulbs:
I don't know, the only thing written other than the voltage and capacity are "+125°C M" and made in japan
Medved
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Feb 17, 2014 at 02:43 PM Author: Medved
It is strange, Panasonic "M" series is rated just up to 85degC with 2000hour life. I don't think these will work there for long...
It look like Su'scon , where the "M" mean +/-20%...

No more selfballasted c***

Kappa7
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Feb 17, 2014 at 02:51 PM Author: Kappa7
It's possible, there isn't any brand written on them.
Ash
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Apr 12, 2017 at 12:41 PM Author: Ash
This shape of break line for venting is used by Panasonic. If there is a symbol like [M] in there then this is the logo of Panasonic

What is the thyristor used and the rest of the circuit around it ?
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