Very old electrical appliances - UK Vintage Radio Repair and Restoration Discussion Forum

ppppenguin · 8th Jan 2011, 8:06 pm

This picture is taken from the IEE centenary edition of Electronics and Power, 1971. The article is about the history of the wiring regulations. The patterning effects are presumably due to my scanner interacting with the dot pattern in the printing.

russell_w_b · 8th Jan 2011, 8:29 pm

Moire patterning by said interaction. It can be removed if your photo-editing software includes a 'blur' function. Patterning is hardly noticeable on your scan, though.

Interesting pics, and akin to some items in my 1920s 'Sunco' electrical catalogue.

paulsherwin · 8th Jan 2011, 8:45 pm

You may get better results if you scan at a higher or lower resolution.

chipp1968 · 15th Jan 2011, 1:35 pm

hats interesting.I have one of the pip top Bulbs, what ever they are from that space heater ! unfortunately i think its blown.

8th Jan 2011, 8:06 pm	#1
ppppenguin Retired Dormant Member Join Date: Dec 2003 Location: North London, UK. Posts: 6,168	Very old electrical appliances This picture is taken from the IEE centenary edition of Electronics and Power, 1971. The article is about the history of the wiring regulations. The patterning effects are presumably due to my scanner interacting with the dot pattern in the printing. Attached Thumbnails

8th Jan 2011, 8:29 pm	#2
russell_w_b Dekatron Join Date: Jul 2007 Location: Penrith, Cumbria, UK. Posts: 3,687	Re: Very old electrical appliances Moire patterning by said interaction. It can be removed if your photo-editing software includes a 'blur' function. Patterning is hardly noticeable on your scan, though. Interesting pics, and akin to some items in my 1920s 'Sunco' electrical catalogue. __________________ Regds, Russell W. B. G4YLI.

8th Jan 2011, 8:45 pm	#3
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,936	Re: Very old electrical appliances You may get better results if you scan at a higher or lower resolution.

15th Jan 2011, 1:35 pm	#4
chipp1968 Rest in Peace Join Date: Jul 2006 Location: Somerset, UK. Posts: 2,356	Re: Very old electrical appliances hats interesting.I have one of the pip top Bulbs, what ever they are from that space heater ! unfortunately i think its blown.