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#143358 - 07/20/05 01:43 PM HQL ballast schematics  
Belgian  Offline
Member
Joined: Oct 2002
Posts: 177
antwerp
Hi everyone, it's been a while that I wasn't here.
I wanted to ask if anybody can help me find a scehmatic for a ballast for a HQL 250W (Osram-MBF-U)lamp. What struk me is that there is no starter. Am I right in saying that the starter is built in the lamp? What about a condesator?


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#143359 - 07/21/05 03:09 PM Re: HQL ballast schematics  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
Gidday there Eli!, [Linked Image]
I'll see what I can dig up for you.
They're common around these parts. [Linked Image]
A MBFU (Blended High Pressure) lamp requires only a starting ballast.
The only starting equipment (a starting resistor and an arc contact) is held within the arc-tube of the lamp envelope.
Provided you have the correct ballast, it should start and run as per normal.
All the ballast does is control the current drawn by the lamp during starting and running of the lamp.


[This message has been edited by Trumpy (edited 07-21-2005).]


#143360 - 07/22/05 12:33 PM Re: HQL ballast schematics  
Belgian  Offline
Member
Joined: Oct 2002
Posts: 177
antwerp
Thanks for the info, Trumpy.


#143361 - 07/23/05 04:43 AM Re: HQL ballast schematics  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
But did that solve your problem, Eli?.


#143362 - 07/24/05 05:37 AM Re: HQL ballast schematics  
Belgian  Offline
Member
Joined: Oct 2002
Posts: 177
antwerp
Yes, thanks, Trumpy. That's what I suspected, that the starter was in the lamp itself, but wasn't 100 percent sure and had difficulty finding this info.



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