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Old 29th Jun 2020, 9:06 pm   #5
FERNSEH
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Join Date: Mar 2005
Location: Gateshead, Tyne and Wear, UK.
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Default Re: Peto Scott 12" console model TV122 1948

Comprehensive information for these early Peto-Scott TVs can be found in Volume II of the Malloy and Poole Television Servicing book. Pages 395 through to 401.
Also covered in the book is two earlier models, TV91 and TV121.
The servicing notes inform us that the vision stages are optimised for full 3Mc/s bandwidth. I'm sure with a good CRT these sets will be capable of displaying extremely good pictures.
Blocking oscillators are employed in all models. The early models employ different valves in the frame timebase, an EBC33 as the oscillator and a large pentode for the output, an EL33. In the later sets Peto-Scott must have noticed that for the frame timebase Pye had got away with a double triode, a Mullard ECC34, so why not do the same?

In 1956 Peto-Scott were one of the first firms to market a TV set with a stabilised line output stage, something you'd only find in high quality monitors.

DFWB.
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