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Clive Sinclair formed Sinclair Radionics in 1961, having a good understanding of electronics and transistor manufacturing. Always the entrepreneur he bought a quantity of transistor test failures from Semiconductors Limited (Semics) of Swindon. As seems to be the norm in British semiconductor history, it was convoluted. Semics was actually Plessey who had licensed Micro Alloy Diffused Transistor technology from Philco in the US. Sinclair used the transistors in a very small pre-amplifier and sold both the amplifier and retested/re-badged transistors separately.
He must have done this again as ST140 and ST141 transistors were on the market, albeit probably in relatively small quantities again.
Above is an ST140 Sinclair transistor. There is also an original Philco MADT transistor. In the middle is a UK manufactured Texas Instruments transistor.
Texas Instruments opened a semiconductor plant in Bedford, UK to manufacture transistors, before moving onto standard logic during the 1960s. It eventually closed in 1994. Sinclair became a large customer for TI in the UK through its various Hi-Fi, micro TV and other products including for the supply of custom ICs. Unfortunately the supply of custom TI ICs was problematic and Sinclair went back to standard logic for the ZX80 home computer and Ferranti Uncommited Logic Arrays for the ZX81 and ZX Spectrum.
The ST140 is an npn, hfe49, vf=715mV, so silicon.
i thought i'd already posted this but it transpires it was a digi version elsewhere.
st paris, ohio
nikon em
What seemed like a long walk from Wick, through Papigoe and Staxigoe to Girnigoe...good Viking names and you'll find these wonderful ruins near the lighthouse at Noss Head!
As viewed through the window of my 1980 Laurel. It's the third time in a fortnight I've seen this now, the first time wasn't sure if I was daydreaming...
Last time I saw one on the road was 1985/86, on a school trip to London.
The site comprises the ruins of two castles: the 15th-century Castle Girnigoe; and the early 17th-century Castle Sinclair. The earlier castle was probably built between 1476 and 1496. Given its isolated position, I can only wonder how on earth they built anything "back in those days". What stories those walls could tell.
This was my first 'hi-fi' amp. Packed flat for easy home assembly, or so I thought. Sir Clive Sinclair was a genius really and this small box of electronic tricks was a real gem. I haven't seen one for decades, but might just buy one if it came along at a decent price. It was only 10w per channel I think, but had such a lovely clean sound.
Restored service station located in Norton, Ks. The man in the picture is the owner...he has restored and maintains both this station and the old Oldsmobile dealership next door. He also has a good sized collection of antique cars he keeps in the garage.
Along a highway near Columbus, Ohio in 1949. Taken with a Speed Graphic on Ektachrome.
Does anyone remember Sinclair Opalene oil?
PINUP QUEEN CLAIRE SINCLAIR IS PLAYBOY’S 2011 PLAYMATE OF THE YEAR
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Wenn es interessiert: Diese (Schatz-)Kiste steht im Heilsarmee Brockenhaus Schaffhausen und die Hefte sind mit 90 Rappen das Stück angeschrieben. Happy hunting!
www.wikiwand.com/en/John_Sinclair_(German_fiction)
Wearing: Blueberry Jimena Shorts, Addams Gizem Top, Reign Indio Boots, Kunglers Bracelet, RE Envy Tags & Bracelet, Damselfly Cella Hair, Howlers Sunglasses, Poses: an Lar, at Venta Silurum maps.secondlife.com/secondlife/Aisling%20Myst/187/194/22
Mv Margaret Sinclair loading an excavator and other equipment before departing for the Isle of Jura.
A retro-themed Sinclair gas station in Cassopolis, Michigan.
If you would like to read more about this photo, please visit my blog post:
brianmoranhdr.blogspot.com/2012/05/sinclair-gas-station.html