[sdiy] Re: Yoo Hoo! little crts

[metasonix]

Pics of most of the baby CRTs, plus full data sheet for the 913
www.aade.com/tubepedia/1collection/tubepedia2.htm

Mazda data sheet for 1EP1, sorry its in French
http://www.mif.pg.gda.pl/homepages/frank/sheets/020/1/1EP1.pdf

Please do not deal with greedy tube dealers like TJ Bruckner, if possible.
He claims to have all of them in stock, but he charges a lot for them.
His price list:     www.elexs.com/8Alpha.htm
Try Antique Electronic Supply first. www.tubesandmore.com

If you want to see how ordinary 5" scope CRTs were used, the schema of
the old Heathkit IO-12 is here. Used a 5UP1. Yes, it needs -1250vdc. That's
typical.
http://www.fvh.accessus.net/~dwentz/heathkit/schematics/heathkit_schema_io12.gif

Sphere Research in Canada has all kinds of weird CRTs.
www.sphere.bc.ca/test/crts.html
Also has links to basic CRT data.

Unfortunately, the link to the 1960 Popular Electronics article for a 1CP1-based
scope is down. I can send copies of it, my 913 circuit, and another 913
circuit from
a WWII monitorscope by mail. Please email privately if interested.




uncle eric
metasonix.com