Talk:531: Difference between revisions

325 bytes added ,  13 July 2023
m
Found it! DuMont CRT in the early 513
m (DuMont ref quoted)
m (Found it! DuMont CRT in the early 513)
 
Line 3: Line 3:


I removed the sentence about the DuMont CRT. [[User:Kurt|Kurt]] ([[User talk:Kurt|talk]]) 07:25, 17 June 2020 (PDT)
I removed the sentence about the DuMont CRT. [[User:Kurt|Kurt]] ([[User talk:Kurt|talk]]) 07:25, 17 June 2020 (PDT)
: While waiting for a particularly long OCR to finish (I must get a scanner configured - phone resolution was too much), I had a dig around and found a couple of refs to the idea of a DuMont in the 531 but not the limit of serials.
: While waiting for a particularly long OCR to finish (I must get a scanner configured - phone resolution was too much), I had a dig around and found a ref to the idea of a DuMont in the 531 but not the exact serials.
See: [https://vintagetek.org/500-series-oscilloscopes/]
See: [https://vintagetek.org/513-oscilloscope/]
<blockquote>
<blockquote>
Dick Rhiger worked with the shop, along with discussions with engineering about plug-in size and shape. As soon as the mechanics and a reliable plug-in connector were figured out, it didn’t take long to put a prototype together, using the 315 sweep and a Dumont CRT.
The 513 was first introduced with the 5XP CRT from DuMont was replaced after SN 1887 with the first Tektronix made CRT, the T51. This is the same CRT used in the Type 531 and 535 oscilloscopes. Unlike the DuMont CRT that used four discrete increasing acceleration voltages (and four separate anode buttons), the T51 employed a pioneering resistive helical anode connection that gradually increased the acceleration potential and avoided the deflection distortion caused by the abrupt high voltage changes found in the DuMont CRT. More information on the T51 can be found on the Tektronix CRT History page in Part 2.
</blockquote>
</blockquote>
[[User:Qfissler|Qfissler]] ([[User talk:Qfissler|talk]]) 10:58, 13 July 2023 (PDT)
[[User:Qfissler|Qfissler]] ([[User talk:Qfissler|talk]]) 11:52, 13 July 2023 (PDT)
900

edits