Glyn Edwards Posted June 16, 2008 Share Posted June 16, 2008 Can anyone help me? Some time ago (3 years +) I came across a range of flood lights that seemed to be ideal for working lights. They had a 1000W TH source (great for instant light the moment the tabs hit the deck for the scene change) and a 70W (?) discharge fitting in the same casing. The clever part was that they woyld automatically change from tungsten to discharge after the discharge lamp had warmed up. Clearly the energy savings from this could be substantial. Sadly I can't remember where I saw them, and now I want the information I can't find it on the web either. The only lead I can come up with is that they may have had them in one of the venues in Derby, however no one I've talked to from Derby can shed any light on where they come from. It may be that they are not specifically theatre units, but warehouse bay type fittings or similar. Answers on a postcard... Glyn Link to comment Share on other sites More sharing options...
Ike Posted June 16, 2008 Share Posted June 16, 2008 I believe Crompton Lighting manufacture some, the feature you're after is often called tungsten run-up. Edit: Odd link thing fixed Link to comment Share on other sites More sharing options...
The Yellow Transit Posted June 16, 2008 Share Posted June 16, 2008 I Have fitted these before in a workshop ,can`t remember where we got them ,but found a site that lists them as pre-strike option http://www.lightingdirectonline.co.uk/products/lowbay.asp orhttp://www.thorlux.com/high_low_bay.shtmlhope this helps phil Link to comment Share on other sites More sharing options...
adam2 Posted June 17, 2008 Share Posted June 17, 2008 Whilst this may seem obvious, ensure that you/your electrician are aware of the substantial current demanded during run up, compared to to a standard HID fitting. The tungsten lamp and the HID are often about the same wattage, I rather doubt that 70 watt HID and 1,000 watt tungsten would be used. I have only installed these fittings once, the HID lamps were 250 watt, and the halogen an SBC Osram halolux or equivalent, wattage according to users choice from 60 watts up to 250 watts. Make certain that you obtain fittings incorporating the control circuit to switch off the halogen lamp. Visualy similar fittings are available without any control circuit, these are intended to have the HID lamp and the halogen lamp connected to completly different circuits.(for example 250 watt HID on mains and 60 watt halogen on a generator or battery) Link to comment Share on other sites More sharing options...
Ynot Posted June 17, 2008 Share Posted June 17, 2008 If you find them, shout up - they sound interesting!! Link to comment Share on other sites More sharing options...
kitlane Posted June 17, 2008 Share Posted June 17, 2008 I can confirm that there are a pair of these units in the FOH lighting bridge at Derby Playhouse, used for working light. They work exactly as you describe and do a very good job. Sadly, I can't remember the make or model or where we got them from. I think it is likely that they are not specifically for theatre but a more general purpose unit. They look more like a traditional "flood" than a Hi-Bay fitting. Kit (former Derby Playhouse Head of Production) Link to comment Share on other sites More sharing options...
gareth Posted August 26, 2008 Share Posted August 26, 2008 Time to resurrect this thread! The ones that Kit describes as used on the FOH bridge at Derby sound exactly like the sort of thing that we're looking for as replacement working light for our studio space. Can anyone enlighten us as to what they might be, and where we might be able to buy some? Link to comment Share on other sites More sharing options...
Glyn Edwards Posted August 26, 2008 Author Share Posted August 26, 2008 Time to resurrect this thread! The ones that Kit describes as used on the FOH bridge at Derby sound exactly like the sort of thing that we're looking for as replacement working light for our studio space. Can anyone enlighten us as to what they might be, and where we might be able to buy some?I've had mixed results in the search. The best I've found seems to be about the 300W Tungsten mark, which wasn't really sufficent for what I wanted. That said I have got a small unit on order to see if it could be adapted eg to drive a contactor so I can plumb up what ever I need. If I a) have a succesful outcome and b) have time to write it up I'll post more. Till then Glyn Link to comment Share on other sites More sharing options...
Simon Lewis Posted August 26, 2008 Share Posted August 26, 2008 Would this device be of any use? Link to comment Share on other sites More sharing options...
gareth Posted August 26, 2008 Share Posted August 26, 2008 Quite possibly! Cheers, Simon. Link to comment Share on other sites More sharing options...
Ynot Posted August 26, 2008 Share Posted August 26, 2008 Quite possibly! Cheers, Simon.VERY interesting - let us know when you get a price (save everyone pestering their sales team!!) Link to comment Share on other sites More sharing options...
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