Film-Tech Forum ARCHIVE: Dolby Power Supply Module

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Topic: Dolby Power Supply Module

Bruce McGee
Phenomenal Film Handler

Posts: 1776
From: Asheville, NC USA... Nowhere in Particular.
Registered: Aug 1999

posted 06-07-2000 11:41 AM

I have just aquired a module with a CAT# 114. It has a computer style power input, and a single molded plug as an output. The wire colors are as follows:

Red
Blue
Green
Yellow

Since WebTV cant handle the manual section of Film-Tech, can someone tell me what the output voltages should be on this unit? The serial # is 1024, and it was made in England. It runs at either 115v, or 230v, 50-60 cycles. What does this bad boy go with? AND if it works, is anybody interested in it?

None of the fuses are blown...

Bruce

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Trevor Bailey
Expert Film Handler

Posts: 113
From: Woonsocket, RI
Registered: Jun 99

posted 06-07-2000 11:52 AM

That is a power supply for a CP-50.

Outputs:
Red +24VDC
BLU +12VDC
GRN Ground
YEL -12VDC

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99

posted 06-07-2000 12:14 PM

What is the problem with WebTv and the manual archives?

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Ian Price
Phenomenal Film Handler

Posts: 1714
From: Denver, CO
Registered: Jun 99

posted 06-07-2000 12:52 PM

Web TV doesn't have the Adobe Reader.

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Bruce McGee
Phenomenal Film Handler

Posts: 1776
From: Asheville, NC USA... Nowhere in Particular.
Registered: Aug 1999

posted 06-07-2000 04:23 PM

Thanks Trevor. I'll check it. Anybody need one? OR does anybody have a CP-50 that needs a power supply that they want to rid themself of?

WebTV and Adobe dont get along. David Koegel made me the copies of the Holmes manuals that are on this site. Wow. Beautiful!

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Scott Norwood
Film God

Posts: 8146
From: Boston, MA. USA (1774.21 miles northeast of Dallas)
Registered: Jun 99

posted 06-07-2000 05:03 PM

Yep, it's a CP-50 power supply. It might work on a CP-100, too, but I've only seen one CP-100 in my life, so I can't be sure.

Those suckers are $400 if purchased brand-new, so you might try putting it in the "for sale" section here. I bet that you'll find someone who needs one.

FYI, those things also take funky European-size fuses. Good luck finding those at your local Radio Shack.

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Bruce McGee
Phenomenal Film Handler

Posts: 1776
From: Asheville, NC USA... Nowhere in Particular.
Registered: Aug 1999

posted 06-07-2000 06:47 PM

Glad the fuses are good.

Believe it or not, I went by where they are tearing down a duplex theater (that in its day had the best screen in town.) There were people removing the last of the consession stuff. The booth left long ago. I saw a red box in the trashcan, saw the dolby logo, asked if I could have it (yes) and walked out the door. There was nothing else electric left, so I left.

I figured that it was expensive when I took the cover off of it. Nice work inside...

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David Johnson
Film Handler

Posts: 54
From: Melbourne Vict Australia
Registered: Oct 1999

posted 06-08-2000 01:26 AM

No, CP100 and CP50 are not the same, they use a different power supply, the Cp100 is not removable. But if the CP100 is used with a SA5, the SA5 will take the CP50 Power supply.
David

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 06-08-2000 08:04 AM

Actually of all the supplies that Dolby has built the CP-100 supply is the best. Its a boat anchor brute regulator type that follows in the steps of the Eveready Bunny.
Later CP-50 supplies were also very stable but they did have trouble with some early ones. I seem to remember that bridge rectifiers went bad in those.
Mark

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John Walsh
Film God

Posts: 2490
From: Connecticut, USA, Earth, Milky Way
Registered: Oct 1999

posted 06-08-2000 08:51 AM

Actually, those European-size fuses have become pretty standard now; you can even get them at Radio Shack (although I shutter at typing that name.)

They are often refered to by their size, "5mm" They were orginally designed to an IEC standard (IEC 127) but manufacturers make slightly different versions that are cheaper, or for special applications.

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