8mm Forum


  
my profile | my password | search | faq | register | forum home
  next oldest topic   next newest topic
» 8mm Forum   » 8mm Forum   » Elmo GS1200 Upgrade (Page 1)

- UBBFriend: Email this page to someone!  
This topic comprises 2 pages: 1  2   
Author Topic: Elmo GS1200 Upgrade
Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017

- posted October 12, 2017 05:11 AM      Profile for Matthieu van der Sluis   Author's Homepage     Send New Private Message       Edit/Delete Post 
I was planning of putting a Osram Xenophot 24V 250W HLX ELC and a LED trafo 300W 24VDC 12.5A IP67 CV my Elmo GS1200, see below links.

At first I'm planning to put the travo paralel on the lpcontacts of the lamp.
If it looks good I ask someone to build it in.
But is it save to do so?

Lamp here:
[URL=http://www.leuchtstark.de/Leuchtmittel/Halogenlampen/OSRAM/Medizinische-Lampen/Osram-64653-HLX-ELC-250W-24V-EEK-nicht-relevant.html?gmc=1&gclid=CjwKCAjwpfzOBRA5EiwAU0ccNzU0EKG HLPUl]http://www.leuchtstark.de/Leuchtmittel/Halogenlampen/OSRAM/Medizinische-Lampen/Osram-64653-HLX-ELC-250W-24V-EEK-nicht-relevant.html?gmc=1&gclid=CjwKCAjwpfzOBRA5EiwAU0ccNzU0EK GHLPUl[/URL] FFpej7yte-P--m5K2cwBylcDlRFz2NXmwmZtgr-sxhoCdzgQAvD_BwE

Travo here:
http://www.ledtrafoshop.nl/product/led-strip-trafo-200w-12vdc-16-6a-ip67-cv/

[ October 15, 2017, 12:12 PM: Message edited by: Matthieu van der Sluis ]

 |  IP: Logged
Phil Murat
Jedi Master Film Handler

Posts: 671
From: Villeneuve St Georges, France
Registered: Dec 2015

- posted October 12, 2017 11:59 AM      Profile for Phil Murat   Email Phil Murat   Send New Private Message       Edit/Delete Post 
Hi Matthieu,

Upgrading Power supply up to 300W or much more is not a problem now with Electronic Power Supply using High Frequency "Hatching" Technology.

However I suggest you to select PSA items offering a pretty good filtered "output" design to avoid extra noises added to your sound (due to ripple currents below 20Khz, above 20Khz, normal human ears can not ear anything) . If extra noises are experienced, check output current with an oscilloscope to help you to fix problem if met.....

Efficient Filters are made with Inductors associated to Capacitors.

If you intend to pick up a 250W power, I suggest you to select a 500W item to get a confortable margin. More Tighten is the margin, higher is the risk to met a power supply overheat....
These modern power supply generally requires a good air flow to safely work.

 |  IP: Logged
Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017

- posted October 12, 2017 04:08 PM      Profile for Matthieu van der Sluis   Author's Homepage     Send New Private Message       Edit/Delete Post 
Than this one will probably stay cool:

https://nl.aliexpress.com/item/Single-Output-24v-DC-Power-Supply-Switching-41-7a-1000w-Led-Driver-Transformer-110V-220V-AC/32698830544.html?spm=a2g0z.search0302.3.9.ITPwKW&ws_ab_te st=searchweb0_0,searchweb201602_0_10051_10050_10053_10052_10338_10055_10099_10054_10177_10056_10059_10532_10534_10533_10060_100031_10107_10304_10307_10341_10065_10142_10340_10068_1 0343_10342_10301_10103_10345_10102_10344_10073_10152_10151_10110_10154_10079_10112_10078_10111_10155_10114_10312_10113_10314_10313_10080_10082_10081_10084_10083,searchweb201603_0,p pcSwitch_0&algo_pvid=61ccee9f-fe74-46bc-8a2c-566bbfd40ea2&algo_expid=61ccee9f-fe74-46bc-8a2c-566bbfd40ea2-1

 |  IP: Logged
Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

- posted October 12, 2017 08:09 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
You can always use a old slide projector that runs on 24v/250watt lamp as your source. A lot of slide projectors you can pick up for near to nothing these days, due to the internal mechanical parts wearing out. As long as the lamp still works, just run a couple of leads from the cut off slide projector wires at the lamp side and run them up to the GS1200. One good thing about doing this, you can still use the high/low switch on the slide projector.

 |  IP: Logged
Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017

- posted October 13, 2017 12:48 AM      Profile for Matthieu van der Sluis   Author's Homepage     Send New Private Message       Edit/Delete Post 
I have 2 of those upstairs.
For trying it out, I only have to order the lamp.

Eventually, if it works positive, I like to have it built in.
Thats why I need small equipment, but as Phil Murat mentioned, without the extra noise added to my sound.

Is it save to add the wires of the slide projector paralel to the wires that are already on the lamp?

 |  IP: Logged
Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

- posted October 13, 2017 12:44 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
Yes its safe but you do need to remove the slide projector lamp. Only ""one lamp" can run off the slide projector transformer. [Smile]

 |  IP: Logged
Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017

- posted October 13, 2017 01:25 PM      Profile for Matthieu van der Sluis   Author's Homepage     Send New Private Message       Edit/Delete Post 
Hahaha, Yes indeed.
Still good to mention.

 |  IP: Logged
Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

- posted October 13, 2017 02:17 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
I have made up about three portable 24v/250watt easy to connect power supplies from old Elmo slide projectors with worn out mechanical bits. They were of know use as a slide projector anymore and in this case I removed all the working parts.
[Smile]
-

 |  IP: Logged
Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017

- posted October 15, 2017 12:13 PM      Profile for Matthieu van der Sluis   Author's Homepage     Send New Private Message       Edit/Delete Post 
Is this lamp suitable for the 8mm gate?
XENOPHOT 64653 HLX ELC 24V 250W GX 5.3 bulb OSRAM 24V250W

 |  IP: Logged
Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

- posted October 15, 2017 06:03 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
I use that lamp all the time on the GS1200..no problem.. [Smile]
-

 |  IP: Logged
Bill Brandenstein
Phenomenal Film Handler

Posts: 1632
From: California
Registered: Aug 2007

- posted October 18, 2017 06:19 PM      Profile for Bill Brandenstein   Email Bill Brandenstein   Send New Private Message       Edit/Delete Post 
Guys, the lumens output of any Osram ELC, including the HLX-series, is less than that of the Philipps or Ushio bulbs. Don't know why, but they're cheap enough you can try it for yourself if you please.
The standard Osram ELC is about 800 lumens flux, and the HLX is a little more; but the Philipps and Ushio bulbs are 1500. Not sure how they did that, but you can see it on screen if you put them side-by-side, or take a camera photo with identical manual settings. Better, use a light meter!

 |  IP: Logged
Dino Everette
Phenomenal Film Handler

Posts: 1535
From: Long Beach, CA USA
Registered: Dec 2008

- posted October 18, 2017 07:17 PM      Profile for Dino Everette     Send New Private Message       Edit/Delete Post 
Graham can you post a non close up picture of how you run your cable from the power source to the projector for a show? It seems you would wind up leaving some part of the lamp house off which would just cause all sorts of light to leaked into the room.

--------------------
"You're too Far Out Miss Lawrence"

 |  IP: Logged
Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

- posted October 18, 2017 10:08 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
Hi Dino [Smile]

I cut a small piece out of the lamp cover for the wiring to pass through..
-
Also I had to remove from the inside lamp cover, the little plate that holds the spare lamp, as it was just hitting the new lamp socket wiring coming out of the rear of the lamp. The plate is held on with a couple of screws. With that out the road it made things a lot easier when re-fitting the inside cover.
-
With the cover fitted.....
-

 |  IP: Logged
Paul Adsett
Film God

Posts: 5003
From: USA
Registered: Jun 2003

- posted October 18, 2017 10:55 PM      Profile for Paul Adsett     Send New Private Message       Edit/Delete Post 
Presumably Graham, the logic circuitry for lamp illumination is now totally by-passed, and you have to be very very careful not to switch on the lamp with the film not moving. And similarly not stop the forward motion of the film without first switching off the lamp. Kind of risky.

--------------------
The best of all worlds- 8mm, super 8mm, 9.5mm, and HD Digital Projection,
Elmo GS1200 f1.0 2-blade
Eumig S938 Stereo f1.0 Ektar
Panasonic PT-AE4000U digital pj

 |  IP: Logged
Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

- posted October 18, 2017 11:53 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
Thats true Paul...I have placed red insulating tape on the lamp switch as a reminder to swich the projector lamp/fan switch to "on" as soon as fwd is pressed so the cooling fan will run.

Once you get into the habit of first pressing fwd, then swich the lamp/fan swith to on, then lastly the external power supply and then the lamp. Same for switching off., the lamp first, then the fan to continue to run for a short while to let things cool down..fan off...motor stop.

Another option is just to leave the projector lamp/fan switch on all the time, so when you press fwd it comes on automatic.

I am looking at fitting a HID kit to the projector. I have most of the bits, but will have to work on a jig the distances etc so the lamp is tightly focused on the gate and know where else...anyway another day for that one.. [Smile]

PS...Just a thought, if you were to run the existing lamp wires not being used at present ie 24volts, to a small relay which is wired to open, when the projector lamp/fan switch is to its on position, then that current could keep the relay contacts in the open position ie no current going to the 24 volt solenoid. However if that current is switched off when the lamp/fan switch is pressed down, the relay contacts would then engage, and wired so that any external 24volt supply, which we already have from the external 24volt power supply, would activate the solenoid thus the dowser would close..mmmmmmmm [Roll Eyes] ...I have some bits from a slide projector...something like this...
-

 |  IP: Logged
Thomas Knappstein
Expert Film Handler

Posts: 124
From: Erwitte, Germany
Registered: Oct 2017

- posted October 22, 2017 12:34 AM      Profile for Thomas Knappstein   Email Thomas Knappstein   Send New Private Message       Edit/Delete Post 
Hello at all!
Before using the Osram ELC 250W Lamp in the GS1200 you must set the
Lampholder 10mm back of the original Position. Than the maximal Focusing of this mirror is on the Frame. - [/IMG]

 |  IP: Logged
Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

- posted October 22, 2017 12:45 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
Thanks Thomas...I think I will give it a go, can you post that photo again as its to small to see any detail... [Smile]

 |  IP: Logged
Thomas Knappstein
Expert Film Handler

Posts: 124
From: Erwitte, Germany
Registered: Oct 2017

- posted October 22, 2017 10:18 PM      Profile for Thomas Knappstein   Email Thomas Knappstein   Send New Private Message       Edit/Delete Post 
Hello Graham!
If I `ll try to make the Picture bigger, I cant it upload here.
What is wrong there?

Thomas

 |  IP: Logged
Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

- posted October 23, 2017 12:33 AM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
Hi Thomas

There is a limit for uploading pictures, as no more than 550 pixels wide. also I think it must be JPEG as well. You might have to re-size your photos to fit..

I did what you suggested today, by moving the lamp holder back the 10mm, by simply drilling another hole on the lamp bracket. However I also made a sort of swing arm, so that I could tilt the lamp holder up or down on the forward screw, adjusting the arm on the rear screw in its slot while running the lamp and the same time running the projector/fan and watching the screen for overall brightness.

Moving it back 10mm certainly improved the brightness, plus I feel the lamp will get more cooling at the front now from the fan....thanks Thomas it was well worth doing. [Smile]
-
-
[Cool] [Smile]

 |  IP: Logged
Thomas Knappstein
Expert Film Handler

Posts: 124
From: Erwitte, Germany
Registered: Oct 2017

- posted October 23, 2017 09:02 AM      Profile for Thomas Knappstein   Email Thomas Knappstein   Send New Private Message       Edit/Delete Post 
Graham Now I try it again. Conecting The external Transformer to the GS 1200. All my three Machines have this Conector on the Top.

-

 |  IP: Logged
Thomas Knappstein
Expert Film Handler

Posts: 124
From: Erwitte, Germany
Registered: Oct 2017

- posted October 23, 2017 09:02 AM      Profile for Thomas Knappstein   Email Thomas Knappstein   Send New Private Message       Edit/Delete Post 
And this is my external Transformer.
It can be dimmed from 0 to 26 V.

-

 |  IP: Logged
Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

- posted October 23, 2017 12:41 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
Thats brilliant Thomas [Cool] ....your modifications look great [Smile]

 |  IP: Logged
Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017

- posted October 24, 2017 02:12 AM      Profile for Matthieu van der Sluis   Author's Homepage     Send New Private Message       Edit/Delete Post 
So guys, that's amazing what you've done already, and superb information.

Thomas, that looks really beautyfull this way.

I think this machines are far more interesting after this Xenophot conversionnow than the GS1200 Xenon, arent they? Specially when you havve a MKIII projector which is basically the same.
I've never seen a xenon version in person, but they seem to be very noisy.

[ October 24, 2017, 06:18 AM: Message edited by: Matthieu van der Sluis ]

 |  IP: Logged
Thomas Knappstein
Expert Film Handler

Posts: 124
From: Erwitte, Germany
Registered: Oct 2017

- posted October 24, 2017 09:57 AM      Profile for Thomas Knappstein   Email Thomas Knappstein   Send New Private Message       Edit/Delete Post 
The Xenon Elmos are very rare and very expensive.
I play cinemascope on a 10 feet Screen. It is bright enough.
But I use the Philips ELC 250W Lamp which has a brighter Light output. This external Transformer was made with the same output Voltages as the original GS Transformer. So preheating and the two Brightswitches are in Funktion.

 |  IP: Logged
Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017

- posted October 24, 2017 12:45 PM      Profile for Matthieu van der Sluis   Author's Homepage     Send New Private Message       Edit/Delete Post 
I was thinking, of a built in version, but your solution is beautyfull too.
I've send an email to Van Eck, to see if they can transform my Elmo GS1200 MKIII with an inbuild solution, but if not,... I like what you did as well and I'll go for your solution.

Where can I find your Travo?
Where did you cut you lightcable, and attached your Travo, so the functions are in tact?

[ October 24, 2017, 01:49 PM: Message edited by: Matthieu van der Sluis ]

 |  IP: Logged


All times are Central
This topic comprises 2 pages: 1  2   
   Close Topic    Move Topic    Delete Topic    next oldest topic   next newest topic
- Printer-friendly view of this topic
Hop To:

Visit www.film-tech.com for free equipment manual downloads. Copyright 2003-2019 Film-Tech Cinema Systems LLC

Powered by Infopop Corporation
UBB.classicTM 6.3.1.2