On 11/9/2010 12:09 PM, Accutron wrote:
Here are the three early advertisements I know about. They were published in Electronics magazine between May and December 1955... http://www.radiomuseum.org/forumdata/users/6435/vm_tubes/magnetron/Haydu1.jpg http://www.radiomuseum.org/forumdata/users/6435/vm_tubes/magnetron/Haydu2.jpg http://www.radiomuseum.org/forumdata/users/6435/vm_tubes/magnetron/Haydu3.jpg
Thanks for the ad scans. They are historically interesting. Have you ever seen a real Vari-Count module?
These ads are amusing in light of the HP decade counter module that uses four 5963 dual triodes as a decade counter, as used in the 52x series counters. True, they needed a CdS photo-resistor plate to do the BCD-to-decimal conversion, but they did with four generic tubes what Burroughs needed an exotic magnetic tube to accomplish.
By the way, I have a Haydu Brothers box with a defective 6700 tube in it. It has little stickers that say, "A subsidiary of Burroughs Corp." stuck on every side of the box. Naturally, it was a gift from Tom Jennings.
It includes a data sheet. I could scan it if you're interested. -- David Forbes, Tucson, AZ -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
