Search found 16 matches

by WHERESTHECUEBALLGOIN
Sun Sep 02, 2018 11:30 pm
Forum: Street Lighting
Topic: New V-Max installs in Milton Keynes
Replies: 3
Views: 77

Re: New V-Max installs in Milton Keynes

I like the pictures. I am seeing more and more installations like this, and the oft touted argument that "LED installations produce less light than the lamps they replaced" is fast becoming obsolete. I agree that there's still a lot of bad installations out there, and older installations (more than ...
by WHERESTHECUEBALLGOIN
Sun Aug 19, 2018 5:07 am
Forum: Control Gear
Topic: Actual circuits watts, fluorescent
Replies: 7
Views: 1966

Re: Actual circuits watts, fluorescent

This is including the gear losses?

The 18W tube is less efficient than the 20W?!
by WHERESTHECUEBALLGOIN
Sun Aug 12, 2018 5:00 pm
Forum: Control Gear
Topic: Ballast for 14W t12 tube
Replies: 12
Views: 763

Re: Ballast for 14W t12 tube

Aye, right you are. Well, I'll do some investigations. Meanwhile brace yourselves; I have about 6 months worth of stuff to upload to the gallery... EDIT: saw this. what an awesome photo: http://www.allthingslighting.co.uk/atl/displayimage.php?pid=14100&message_id=27697a65bbed0a1e5514b2c3f90d08eb&mes...
by WHERESTHECUEBALLGOIN
Sun Aug 12, 2018 11:45 am
Forum: Control Gear
Topic: Ballast for 14W t12 tube
Replies: 12
Views: 763

Re: Ballast for 14W t12 tube

Only have one lamp. I can build the circuit though knowing that a 15W should give acceptable results. I've tried it on one in the past, by un-clipping the lamp holders of an arrow slim 15W and bodging it that way. Surprised to hear about running 15W tubes on 20W ballasts, would have thought lifespan...
by WHERESTHECUEBALLGOIN
Sun Aug 12, 2018 12:18 am
Forum: Control Gear
Topic: Ballast for 14W t12 tube
Replies: 12
Views: 763

Re: Ballast for 14W t12 tube

XmasLightGuy wrote:Here in the US its the same ballast for both 14w T12 and 15w T12 (weather you're talking magnetic or electronic)..
That's odd. The operating specs (voltage, current) are different. Unless it's just accepted that it'll work and run an acceptable lifetime on a 15W ballast.
by WHERESTHECUEBALLGOIN
Sat Jul 28, 2018 11:45 am
Forum: Control Gear
Topic: Ballast for 14W t12 tube
Replies: 12
Views: 763

Re: Ballast for 14W t12 tube

I have to admit that when I went to run the couple of 14W tubes I've got here I just used a CFL ballast with the same wattage. Overall circuit power seemed to be pretty close and brightness looked in line with what I'd expect. Worked well enough for getting photos, spectra etc anyway even if it may...
by WHERESTHECUEBALLGOIN
Wed Jun 20, 2018 5:34 pm
Forum: Control Gear
Topic: Ballast for 14W t12 tube
Replies: 12
Views: 763

Re: Ballast for 14W t12 tube

Different arc tube voltages/current unfortunately Ria. And yes Tom that’s what I thought :/ The spec isn’t that different, I think there’s only about 0.05amps and something like 10 volts in it but when you consider that’s still a sizeable proportion of the overall power it requires I’m cautious abou...
by WHERESTHECUEBALLGOIN
Wed Jun 20, 2018 1:35 pm
Forum: Control Gear
Topic: Ballast for 14W t12 tube
Replies: 12
Views: 763

Ballast for 14W t12 tube

I have a little 14W t12 tube in deluxe warm white that I would like to start using. I’ll build a mounting board for it, but I need gear. The operating voltage and current aren’t quite the same as 15W, although it will run on one of those I’d like to do it properly. I’m not averse to using an electro...
by WHERESTHECUEBALLGOIN
Wed Jun 20, 2018 1:29 pm
Forum: Lamps
Topic: The Nernst Lamp
Replies: 3
Views: 644

Re: The Nernst Lamp

In Andrew Pullen (the “globe collector”) short movie you can see him “blowing out” a lamp that looks like a Nernst lamp.
by WHERESTHECUEBALLGOIN
Tue May 01, 2018 1:10 am
Forum: Lamps
Topic: Short Time Running Of Fluorescents
Replies: 8
Views: 1636

Re: Short Time Running Of Fluorescents

removed
by WHERESTHECUEBALLGOIN
Sun Apr 29, 2018 11:18 pm
Forum: Lamps
Topic: Short Time Running Of Fluorescents
Replies: 8
Views: 1636

Re: Short Time Running Of Fluorescents

removed
by WHERESTHECUEBALLGOIN
Fri Jul 21, 2017 9:34 am
Forum: Lamps
Topic: Coloured Metal Halide Lamps
Replies: 8
Views: 2162

Re: Coloured Metal Halide Lamps

removed