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FERNSEH · 19th May 2018, 11:48 am

The 1500 is an ideal candidate for a proper black level clamp. Following the rules of using the tech of the times when the set was designed we can use an emitter follower stage as the video amplifier to CRT cathode buffer.
I believe that even the schools version of the 1500 didn't have this refinement.

DFWB.

19th May 2018, 11:48 am	#7
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Ultra 6823 (Thorn 1500 chassis) The 1500 is an ideal candidate for a proper black level clamp. Following the rules of using the tech of the times when the set was designed we can use an emitter follower stage as the video amplifier to CRT cathode buffer. I believe that even the schools version of the 1500 didn't have this refinement. DFWB.