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Author
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Topic: BEAULIEU : Modifications In Progress
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Phil Murat
Jedi Master Film Handler
Posts: 671
From: Villeneuve St Georges, France
Registered: Dec 2015
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posted March 03, 2017 01:54 PM
Hello Beaulieu's Fans,
Here is the "first juice" of the new Regulation Card (Have a look on French Forum Link).
30% modification and re Engineering.
Beaulieu Modifications in progess
A set of Card will be launched in production within 2 months approx...
This picture is showing a Stereo Projector compatible card . However connectors set are completely different from former ones and have to be change as a full set (Male/Female).
The new connectors are very common (used on computers) and pin/socket are a bit stronger (increase current capacity)
L200C regulators are not used anymore and replaced by LT1074HV which allow an incomming voltage up to 60V.
Also LT1074HV are oversized (5A capacity)
CS140 will be installed on a DIP support and can be removed in a few minutes without having to pull up the card from the projector, as necessary (CS140 will not be directly brazed on PCB)
New Card is an Epoxy FR4 material , showing dual lays, fully tin coated. A 2 lays tracks offers a much more homogeneous configuration than a single track PCB....
A Second "major" Step will be to adapt this card to the "Mono Sound" Machine to allow a more confortable Variable Speed Range , allowing to reach 26 to 27 fps.
Adapting Voltage for Mono Sound machine (MONO 32V instead of STEREO 24V), is easy to achieve (Only one resistor to change).
Enjoy it !!!
Phil
NB
All drawings were performed with "TCI" software which is a fantastic tool , easy to use for beginners (Highly recommended)
[ March 03, 2017, 03:51 PM: Message edited by: Phil Murat ]
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Phil Murat
Jedi Master Film Handler
Posts: 671
From: Villeneuve St Georges, France
Registered: Dec 2015
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posted March 04, 2017 02:08 AM
Hello Andrew,
As you know, I am not involved in any business. I am not a professional, have no "shop", so I have "no right" to do business.
Making business with that should be illegal.
What I observe also is that a bad business arround super 8 is not a good thing for this activity.
The only thing I can do is to build very few of it and to sell at a nominal cost without any benefit.
Also, that could only be possible if new card is 100% satisfactorying me, upon some hours of testing.
An other "motivating" solution should be to make an exchange against "equivalent" in S8 movies ..... I am opened
Observe also, Due to the new connectors installed , 22 wires have to be replaced and rebrazed in same position.
That needs to have suitable tools to do it.
The new wires , keeping same colours as possible, will be crimped on the sockets as it was at the origin.
L200C is an interesting component. However incomming voltage limit is too low.
So , I confirm both L200C will be replace by LT1074HV.
Keep in touch
Phil
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Phil Murat
Jedi Master Film Handler
Posts: 671
From: Villeneuve St Georges, France
Registered: Dec 2015
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posted May 05, 2017 10:50 AM
Thanks Andrew for your comments.
Concerning Winbert question the aim is to increase quality of the board in a first time:
- Former boards are poor quality material, sometimes cooper tracks can peel off.
New one is Epoxy FR4, full Tin coated, CNC predrilled and cut out.....
- Former board is not showing a nice track management.
New one is double lays, so the drawing is much more homogeneous.
- Due to aging and numerous capacitors installed on the board , aging increase the failure rate , more particularly if not often used.
New one is built with modern items.
- Former Board Voltage is controlled by L200C Regulators. Unfortunately transformer deliver 40V to input . So Beaulieu imagine to drop input voltage for about 3,5v by adding 5 diodes.
This is a cheap solution but not acceptable.
New one is showing LT1074HV (x2) (instead of L200C) which offer a confortable margin for input Voltage (60V capacity)
Observe Output Voltage can be adjusted with Multiturns Trimmers with much higher precision than before.
Observe also that LT1074HV is working at 100Khz so that this frequency has, normally, no unwanted effect on quality of the sound
- Former board is fitted with resistors 5% and some capacitors "K" rate (+/- 10%).
New one is fitted with resistors 1% and Capacitors "J" rate (+/- 5%) as possible.
Due to LT1074HV high frequency, Output Capacitors installed are 105°C and High Frequency Capability, Low impedance.
- Former Board is showing CS140 directly brazed on PCB. This is cheap and bad when you need to replace it.
New one is showing CS140 installed on DIL support. 10mn necessary to replace CS140 without unbrazing anything.
CS140 will be easy to pull out using a narrow strap....
- Former Board is showing obsolete connectors bars no more available now.
New one is showing standard connectors used on computers and very common. Moreover Current capacity is increased for pins and sockets.
- Former Board secondary fitting hole is unused (on the board right side) !!!
New one is showing secondary relocated fitting hole to allow a rigid installation on an intermediate spacer bracket with 3mm screws. (No need to modify Casing)
In a second Time :
Due to LT1074HV installation, the new board will be easier to fit on a Beaulieu 708 EL "MONO" (minor change to do on the new board to cop with a different Output Voltage.
I think this is a great news for "MONO" owners , because at this time it is very difficult to reach 25 Fps on "MONO" machine.
With the new board, the speed range will be same as "STEREO" machine.
To be note the Front switch Board has to be modified to get the same configuration of the STEREO Front Switch Board.
[ May 23, 2017, 09:39 AM: Message edited by: Phil Murat ]
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