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Thu Jun 05, 2003 5:10 pm

Forum: Neon, LED, Lighting

Topic: what is the LED efficiency and costs to run?

Replies: 10

Views: 5112

Couldn't agree more with Phil's comments on white LEDs - they really are pathetic at the moment. They are certainly nowhere near the 50 lumens per watt that Philips suggested was likely before 2005. Even then, they will still be quite a bit less efficient than standard fluorescent tubes. In my tests...

Wed Apr 23, 2003 8:48 pm

Forum: Neon, LED, Lighting

Topic: what is the electronic ballast reliability?

Replies: 2

Views: 1623

Hi Phil, Firstly, low-loss conventional ballasts will be with us for some considerable time - ask John about the LIF Technical Note. In my rounds, I have found that sign makers (even major ones) have been using electronic ballasts that are not designed for outdoor use. I have seen several types with...

Sun Apr 20, 2003 5:01 pm

Forum: Neon, LED, Lighting

Topic: how bright can the illuminated sign be?

Replies: 16

Views: 5999

The limits for sign luminance in the third edition of ILE Reopt No 5 are defintely too low for practical purposes. Have you looked at the data sheets produced by ICI platics (now Lucite). These list the surface luminances for different plastics materials and with different spacing for fluorescent an...

Sun Apr 20, 2003 4:41 pm

Forum: Neon, LED, Lighting

Topic: what is the LED efficiency and costs to run?

Replies: 10

Views: 5112

Hi Phil, Nice to get an input from you, particularly on a subject that's dear to my heart. Before I put in my two pennyworth, just a small personal point - Sorry boss man, this is nothing to do with signs. You were kind enough to once recommend a marvellous book by Daniel Dennett - Darwins Dangerous...

Tue Apr 01, 2003 8:13 am

Forum: Neon, LED, Lighting

Topic: how bright can the illuminated sign be?

Replies: 16

Views: 5999

how bright can the illuminated sign be?

Yes, I know that there is already an area devoted to sign lighting, but this is somewhat different. One subject where I have had more queries than most from sign makers concerns the brightness of signs. The question is often asked in planning applications and many of them do not know how a rough fig...

Tue Apr 01, 2003 7:52 am

Forum: General Sign Topics

Topic: cscs cards update

Replies: 25

Views: 5054

Dear friends, Gosh, this subject does seem to have generated a lot of heat. Firstly, the email address of the BSGA is bsa@sign.u-net.com. The Director (as I expect you all know) is Peter Tipton. I am not a member of the BSGA but am employed on a part time basis as a technical consultant. I am more t...

Fri Mar 14, 2003 2:39 pm

Forum: General Sign Topics

Topic: cscs cards update

Replies: 25

Views: 5054

Many thanks Phill for that query. I guess that no one has thought of the situation of a sole trader. There are also many other small companies who have just a few installers, all of whom are working on site. It could become a mutual admiration society. I will raise this with my colleagues and let yo...

Wed Mar 12, 2003 7:03 pm

Forum: General Sign Topics

Topic: cscs cards update

Replies: 25

Views: 5054

I have been working with the BSGA in developing industry specific criteria for a CSCS card for sign installers. Perhaps you might be interested in an update on the present position. The following note has been agreed with Peter Tipton of the BSGA. The CSCS Card These notes concern merely the basic r...

Thu Mar 06, 2003 2:05 pm

Forum: General Sign Topics

Topic: cscs cards update

Replies: 25

Views: 5054

Many thanks. Bob

Regards

Don

Thu Mar 06, 2003 10:40 am

Forum: General Sign Topics

Topic: cscs cards update

Replies: 25

Views: 5054

Further to my last note, I thought that CSCS stood for:

Construction Skills Certification Scheme.

Regards

Don Dunthorne

Thu Mar 06, 2003 10:34 am

Forum: General Sign Topics

Topic: cscs cards update

Replies: 25

Views: 5054

Thanks for that info. Would appreciate more details on this company which is called CSCS. I thought that CSCS was just the name of the scheme.

Regards

Don Dunthorne

Thu Feb 06, 2003 7:26 pm

Forum: Neon, LED, Lighting

Topic: Is there a calculation for working out the wind load?

Replies: 9

Views: 3948

My background is in electrical engineering, although having been Technical director, firstly of GEC Claudgen and then Oldham Signs, you do get to be a bit of a jack of all trades ( I won't add the second part of this saying). The head of my design office at Claudgen (now freelance) was John Russell ...

Tue Jan 21, 2003 5:52 pm

Forum: Neon, LED, Lighting

Topic: EU and BS standards for fabrication of neon signs

Replies: 12

Views: 4813

Dear Mike, Many thanks for your query. Lumens are units of light produced by a light source such a fluorescent lamp. For the purposes of planning regulations, local authorities are usually interested in the brightness (luminance) of the front face. this is usually quoted in terms of Candelas per squ...

Mon Jan 06, 2003 5:09 pm

Forum: Neon, LED, Lighting

Topic: EU and BS standards for fabrication of neon signs

Replies: 12

Views: 4813

This subject seems to have changed a bit since my first note on the new Standard (EN 50107-1, 2002). However, you might like to know that I am preparing notes on the changes to the requirements for the Jan/Feb issue of Sign Directions.

Regards

Don Dunthorne

Fri Dec 20, 2002 5:50 pm

Forum: Neon, LED, Lighting

Topic:

Replies: 19

Views: 8442

I note with dismay some adverse comments about the BSGA. I am not a member although I do work for them as a consultant and sit on their Technical Committee. As such, I am in a position as an independent person to see what they do for their members. I can assure correspondents that they have the smal...

Thu Dec 19, 2002 2:19 pm

Forum: Neon, LED, Lighting

Topic:

Replies: 19

Views: 8442

Re: Skills for repairing electric signs Apologies for coming late to this topic but, as you probably know, I have only just joined this discussion group. There is no legal requirement (shame!) for a person carrying out sign repairs to have any formal qualifications. There is the construction skills ...

Wed Dec 18, 2002 1:41 pm

Forum: Neon, LED, Lighting

Topic: does anyone have experience with neon transformers?

Replies: 4

Views: 2448

As far as LEDs are concerned, did you read my summaries of the present situation in two issues of Sign Directions earlier this year. as well as doing some tests of my own, I obtained much information from manufacturers. The articles represented a fair summary of the state of play at that time. Of co...

Wed Dec 18, 2002 1:35 pm

Forum: Neon, LED, Lighting

Topic: does anyone have experience with neon transformers?

Replies: 4

Views: 2448

Re: T% lamps Yes, they are very bright compared with white cold-cathode tubes. Osram FQ5484 Cool White, 1149 mm x 16 mm diameter delivers 5000 initial lumens for 54 W, ie. over 90 lumens per watt. For comparison, this lamp delivers about 4350 lumens per metre. In comparison, a 15 mm cold-cathode coo...

Tue Dec 17, 2002 3:43 pm

Forum: Neon, LED, Lighting

Topic:

Replies: 3

Views: 2479

There is an article on halo illumination in the November/December issue of Sign Directions magazine - should be out about now.

Regards

Don Dunthorne

Tue Dec 17, 2002 3:38 pm

Forum: Neon, LED, Lighting

Topic: does anyone have experience with neon transformers?

Replies: 4

Views: 2448

does anyone have experience with neon transformers?

I wonder if any correspondents have experienced poor performance from low-voltage (less than 1000 V) constant current transformers. These transformers usually include a series capacitor that provides a semi-resonant effect, boosting the output voltage once the tube has started. However, until that h...

Tue Dec 17, 2002 3:29 pm

Forum: Neon, LED, Lighting

Topic: EU and BS standards for fabrication of neon signs

Replies: 12

Views: 4813

More information on neon manufacture courses. Peter Tipton of the BSGA says that the following college has been approved by them. Sheffield College Signwork Department Castle Centre - Talbot Norfolk Park Road Sheffield S2 3QE Tel: 0114 272 3290, Fax: 0114 272 3302 email: davegreg@compuserve.com BSGA...

Fri Dec 13, 2002 4:39 pm

Forum: Neon, LED, Lighting

Topic: EU and BS standards for fabrication of neon signs

Replies: 12

Views: 4813

At the last count, Masonlite still do this course although I don't know how extensive it is these days. Certainly, when Peter Mason ran the company the courses were very comprehensive but he has long since retired. He and Olive are in their nineties now and still enjoy life - commuting between their...

Thu Dec 12, 2002 11:54 am

Forum: Neon, LED, Lighting

Topic: EU and BS standards for fabrication of neon signs

Replies: 12

Views: 4813

EU and BS standards

Mike,

Thanks for your welcome.

My background is in most aspects of signmaking but, in particular, tube manufacture and circuit information. Happy to discuss technicalities with anyone.

Don

Thu Dec 12, 2002 10:06 am

Forum: Neon, LED, Lighting

Topic: EU and BS standards for fabrication of neon signs

Replies: 12

Views: 4813

EU and BS standards for fabrication of neon signs

Members may be interested to know that the latest edition of the EU standard for neon signs has just been published (EN 50107, Part 1, 2002). It is important that signmakers understand the requirements in order to comply with their legal obligations under the Low Voltage Directive. There are importa...

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