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vintage lighting controller |
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2x18 
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Joined: 03 April 2008 Status: Offline Points: 201 |
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 Topic: vintage lighting controllerPosted: 14 March 2012 at 9:39pm |
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just a old dj
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jbl_man
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Joined: 12 January 2005 Location: London. Status: Offline Points: 11308 |
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Posted: 14 March 2012 at 9:54pm |
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That looks mid 1970's,and Brand new! my eyes aren't so good,is that a DIN input plug?
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Be seeing you.
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VSS
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Joined: 28 December 2011 Location: Belgium Status: Offline Points: 87 |
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Posted: 15 March 2012 at 8:43am |
Yes , it is .
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audiomik
Old Croc 
Joined: 06 April 2010 Location: Bath, UK Status: Offline Points: 2956 |
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Posted: 15 March 2012 at 8:49am |
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I seem to remember using one or two of them back in the early '70's with some Graphic Artists to do 'moving backdrops' for Bands....
Mik |
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Warning! May contain Nuts
plus springs, washers, screws, etc, etc. |
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Muckerbarnes1
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Joined: 20 March 2010 Location: Stroud Status: Offline Points: 2637 |
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Posted: 15 March 2012 at 9:58am |
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Cool.
Whats the bet it's Thyristors/SCR's, not Triacs then Mik? Like a BT108.
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Billy Dawg.
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Mhamplification
Young Croc 
Joined: 16 July 2009 Location: County Durham Status: Offline Points: 541 |
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Posted: 15 March 2012 at 3:25pm |
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How Much ?????
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jbl_man
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Posted: 15 March 2012 at 6:31pm |
Does that mean it wont switch reactive loads like pinspots then Malc? ..i guess at the time it was made all there were was filament bulb spot lights. |
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Be seeing you.
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audiomik
Old Croc
Joined: 06 April 2010 Location: Bath, UK Status: Offline Points: 2956 |
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Posted: 15 March 2012 at 8:12pm |
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Malc, Ian
from memory - Triacs Didn't have LV lighting back then as used Theater Lighting fittings so could use Gels for best colours to match the paint, but also ran UV flourescents with pre-heat transformers added into them..... Mik |
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Warning! May contain Nuts
plus springs, washers, screws, etc, etc. |
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Muckerbarnes1
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Joined: 20 March 2010 Location: Stroud Status: Offline Points: 2637 |
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Posted: 15 March 2012 at 8:45pm |
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Triacs were not common back then in lighting control. Posh dimmers used 2 SCR's to get full wave control.
No Ian a single SCR will not work an inductive load, but as Mik states back then only resistive loads were really used. I built a SCR lighing controller from a kit at when at school. Scared the crap outta the old lady!! Then modded it with larger SCR's to controll multiple 500W lamps. Oooo. days gone by. I'd love to see inside that gadget. Go ask for a PIC Ian!!!!!
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Billy Dawg.
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audiomik
Old Croc
Joined: 06 April 2010 Location: Bath, UK Status: Offline Points: 2956 |
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Posted: 15 March 2012 at 8:54pm |
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Back to back thyristers still outperform Triacs for surge current performance!
Mik |
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Warning! May contain Nuts
plus springs, washers, screws, etc, etc. |
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Muckerbarnes1
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Joined: 20 March 2010 Location: Stroud Status: Offline Points: 2637 |
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Posted: 15 March 2012 at 9:00pm |
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Anybody ever come across Thespak dimmers?
Made in Stroud. Of course.
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Billy Dawg.
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jbl_man wrote: