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1. Re: [Amps] Screen Supply for 4CX250 series (score: 1): Author: "David Lisney" <g0fvt@hotmail.com>; Date: Sun, 11 Sep 2005 20:01:12 +0100; Hi, a couple of people emailed me off list for the circuit diagram of my transistor stabilised screen supply, sorry I had a hard-drive failure (how do they possibly claim such amazing MTBFs) if those; /archives//html/Amps/2005-09/msg00093.html (6,830 bytes)
2. Re: [Amps] Screen Supply for 4CX250 series (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Mon, 12 Sep 2005 01:15:46 +0100; The MTBF's on hard drives are quoted in an odd manner (well odd to me anyway), but I guess it has some logic to it. A decent SCSI hard drive will have an MTBF of over 1 million hours, but this does *; /archives//html/Amps/2005-09/msg00094.html (8,900 bytes)
3. Re: [Amps] Screen Supply for 4CX250 series (score: 1): Author: "Keith Dutson" <kdutson@sbcglobal.net>; Date: Sun, 11 Sep 2005 21:47:29 -0500; A typical MTBF for EISD hard drives is 500,000 hours. However, this is just a statistical benchmark figure used by manufacturers. It is NOT a guarantee by any means. 73, Keith NM5G --Original Message; /archives//html/Amps/2005-09/msg00096.html (9,610 bytes)
4. Re: [Amps] Screen Supply for 4CX250 series (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Mon, 12 Sep 2005 21:59:03 +0100; I am well aware of that - the M in MTBF stands for mean, which is a statistical term. The guarantee is typically 3 years, which is very different from the 57 years MTBF. The MTBF on some SCSI drives; /archives//html/Amps/2005-09/msg00102.html (11,904 bytes)

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