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Posts
5,402 -
Joined
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Last visited
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Days Won
32
Craig Sawyers last won the day on November 24 2024
Craig Sawyers had the most liked content!
About Craig Sawyers
- Birthday 03/02/1956
Profile Information
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Location
Oxford UK
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Gender
Male
Converted
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Location
Oxford UK
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Interests
Copious
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Occupation
www.tech-enterprise.com , LinkedIn profile
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Hobbies
Copious squared
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Headphones
Stax Lamdas, SR007Mk2 DT990, K701, Etymotic FR4P, Old Koss ESP9
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Headphone Amps
KG Triode, Dyna-something, KG BH, T2 clone completed and sounding stunning
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Sources
Meridian and Cambridge Audio CD, Garrard 401/SMEIV/Zu DL103, Logitech Transporter, Khozmo balanced passive pre
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Other Audio Gear
Linkwitz LX521.4 speakers
Craig Sawyers's Achievements
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Super Secret Ultra Gold Member (6/6)
5.3k
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Have a great woody day Steve! Happy birthday from the other side of the pond!!
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Megatron Electrostatic Headphone Amplifier
Craig Sawyers replied to kevin gilmore's topic in Do It Yourself
That is an impressive device! And cheap as chips at UKP 0.38 (although it is very similar in USD or Euro now) from Mouser in one off. -
Megatron Electrostatic Headphone Amplifier
Craig Sawyers replied to kevin gilmore's topic in Do It Yourself
Or even the DXTP560BP5 . PNP, 500V, 150mA and 2.8W Surface mount of course.... -
Megatron Electrostatic Headphone Amplifier
Craig Sawyers replied to kevin gilmore's topic in Do It Yourself
Any thoughts on the PZTA96ST1G ? Surface mount SOT223, PNP, 450V and 500mA. Downside is 1.5W power dissipation. At least the darned thing is still available -
Megatron Electrostatic Headphone Amplifier
Craig Sawyers replied to kevin gilmore's topic in Do It Yourself
KSA1156 is of course obsolete, alas. OnSemi seem hell bent on obsoleting anything remotely useful from the inventory of companies they acquired. If it does not go in a mobile phone, flat screen TV, PC or car or anything with huge volume, they lose interest real fast. Any that are on eBay are >90% fakes -
Megatron Electrostatic Headphone Amplifier
Craig Sawyers replied to kevin gilmore's topic in Do It Yourself
The bizarre thing with the Sanyo datasheet in the subject line says NPN, but the actual data is all negative going - which would only be the case for a pnp. Of course all the AI data scrapers only consider the (incorrect) Sanyo tag line of NPN - and that forms the basis for every human on the web to propagate that nonsense. Or the other way round - it matters not. As Kevin says - the 2sa1968 is a pnp -
A very belated one Jeff - hope you had a great day!
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The Knuckledragger 3rd Memorial Slow Forum Post
Craig Sawyers replied to Knuckledragger's topic in Off Topic
Eating humble pie. The original diagram was correct. I had to draw up the truth tables to convince myself! Clearly very rusty now with Boolean logic. I used to be a dab hand. -
The Knuckledragger 3rd Memorial Slow Forum Post
Craig Sawyers replied to Knuckledragger's topic in Off Topic
The two captions on the bottom right are the wrong way round. The NOR gate in the bottom middle would do not(South or Africa) and the bottom right, a NAND gate would do not(South and Africa). -
What a life! She said in an interview in the last few years that she was amazed she was still alive. RIP Marianne Faithfull.
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Happy birthday!!
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"If you want to feel older, just try giving an uncooperative cat a series of antibiotic pills." The mighty Hercules trying to give the cat a pill
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RIP Tony Slattery. Who is that? Well back in '79 or thereabouts we went to see the Cambridge Footlights, a showcase for comedy and acting from Cambridge University Undergrads. Traditionally participants have gone on to greatness. Been running since 1886 https://en.wikipedia.org/wiki/Footlights . The one we saw - in Southampton - had Stephen Fry, Hugh Laurie and Emma Thompson in it. Aged 20 or 21 at that point. Each of them went on to greatness. This is them back then. Slattery is the guy in the pale sweater. After footlights he had a burst of fame in a satirical review show on the TV - and then nothing. Totally off the radar. Unrecognizable now, he was making a slow come back. He'd spent the intervening 40 years in dependency and mental illness. No sooner was he getting modestly confident in front of an audience, that he had a heart attack and died, aged 65.
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Happy birthday Grahame!!!
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SAS Rogue Heroes https://en.wikipedia.org/wiki/SAS:_Rogue_Heroes I had not realised that the SAS (Special Air Service) was a created entity in 1942, but quickly became the sort of thing we know of today. Once they got going, and started causing clandestine mahem in desert warfare against Rommel's supply chain, they invented their own motto - still the SAS's motto today - "Who dares, wins". Anyway, a must watch.