Re: Sprague capacitors variants
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Don Since the Sprague molded tubular caps are black and Sprague was making tons of them once they caught on and were used in everything, it is no surprise that they would be called Black Beauty by the sales staff.?? We all know the story behind the first National HRO receiver, don't we? Regards, Jim Logic: Method used to arrive at the wrong conclusion, with confidence.? Murphy
On Tuesday, April 30, 2024 at 04:21:05 PM CDT, don Root <drootofallevil@...> wrote:
Hi Jim I did not call early ?molded phenolic resin tubulars ?by the names ¡°black beauty¡± or even ¡°telecaps¡± as they did not use that term early on, but it seems that they became telecaps and then ¡°black beauty¡± telecaps ??as in in the ad I posted before =?? ?????????? ???? ?if you look at other forums not all BBs were striped. I have looked at many many ads, and am left asking what is the deal about stripes? And it ?seems to me early ads were salesman¡¯s hype. ?
Re The text in the first ad you found says that the TM (Tubular Molded?) says that it has been in development for 4 years.? That puts it at the end of WW2.? Printed values and logo, no stripes, so I'm not sure that the TM was ready for prime time.? Same as seen in your second ad. ? The earliest ad that I found for the first generation Black Beauties is September, 1948 in "Electronics," paper page 58, pdf page 62.? Still not called Black Beauty but the value is shown in color coded color stripes. ? the earliest TM I have stored away is ??????? first? ???"TM" units. ?See pdf? 21 --- ? ? re? ??A more detailed ad is in "Electronics," July, 1950, paper page 119.? Still not called Black Beauty, it is referred to as a molded tubular, with color stripes, as it is in the above ad. I¡¯ll take your word , but look at this,:a month earlier ?????????? 1950-06 ?BlackBeautyTelecap? ?? pdf???? 4? -----??? ? ? ? Re? Found an ad in "Electronics,"?January, 1956 on paper page 11,?calling the molded tubular capacitor a Black Beauty,? ?They switched to type 109p that used HCX [not oil] ?in nov 1955 ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Jim Whartenby via groups.io
Sent: Tuesday, April 30, 2024 2:52 AM To: [email protected] Subject: Re: [HallicraftersRadios] Sprague capacitors variants ? Don The text in the first ad you found says that the TM (Tubular Molded?) says that it has been in development for 4 years.? That puts it at the end of WW2.? Printed values and logo, no stripes, so I'm not sure that the TM was ready for prime time.? Same as seen in your second ad. ? The earliest ad that I found for the first generation Black Beauties is September, 1948 in "Electronics," paper page 58, pdf page 62.? Still not called Black Beauty but the value is shown in color coded color stripes. ? A more detailed ad is in "Electronics," July, 1950, paper page 119.? Still not called Black Beauty, it is referred to as a molded tubular, with color stripes, as it is in the above ad. ? Found an ad in "Electronics,"?January, 1956 on paper page 11,?calling the molded tubular capacitor a Black Beauty,? ? I will search the jobber magazines for the Black Beauty trade name but I suspect that the equipment designers got their ideas from the more technical pubs like "Electronics."? If anyone finds a Black Beauty ad before 1955, give a holler. ? Regards, Jim Logic: Method used to arrive at the wrong conclusion, with confidence.? Murphy ? ? On Monday, April 29, 2024 at 04:45:19 PM CDT, don Root <drootofallevil@...> wrote: ? ? Richard, also Jacques and all re¡..The early one does not list any molded paper caps Here is the first ad I found for the molded caps , no telecap or black beauty yet ??? ? ^^ 1948-02? Radio-Maintenance- pdf? 21 --- ? ¡and the first telecap ad ? ? ^^? 1949-04 RSD- Pdf?? 12 ? ? ? ? And telecaps are referred to by the expression ?[These "Black Beauties"] ??
^^ 1950-04 Radio-News- pdf?? 16??? -----?? ? then two month later? =? Sprague Black Beauty Telecap? Tubulars ?? ?????????? ???? ^^?? 1950-06 Radio-Maintenance- pdf???? 4? -----? ? ? ? RE ?In any case, I believe these are the replacements for the Black Beauty caps I don¡¯t understand this. ???Black Beauty began in 1950, and ran in ads to 1967. but the construction changed first brought in HCX and later Difilm ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow ? FWIW, I have a couple of hard copy "Radio's Master" catalogues. Sprague began using the trade name "Telecap" after the Black Beauty don??? va3drl
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Jim Whartenby