Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+QSK\-1500\s+chip\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+QSK\-1500\s+chip\s*$/: 7 ]

Total 7 documents matching your query.

1. [Amps] QSK-1500 chip (score: 1): Author: "kingwood" <k5jv@kingwoodcable.com>; Date: Wed, 7 Jul 2010 14:59:05 -0500; Greetings to all, I have located a source for the, hard to find, Motorola MC14011BCP chips. The only problem is that I must order 25 of them to get the price anywhere with reason. Does anyone have an; /archives//html/Amps/2010-07/msg00072.html (6,938 bytes)
2. Re: [Amps] QSK-1500 chip (score: 1): Author: "Jeff Blaine AC0C" <keepwalking188@yahoo.com>; Date: Wed, 7 Jul 2010 18:31:38 -0500; Would a CD4011B instead? I know the TI chip is still available and has diode clamped inputs. $0.40 at Mouser. 73/jeff/ac0c www.ac0c.com _______________________________________________ Amps mailing li; /archives//html/Amps/2010-07/msg00074.html (7,984 bytes)
3. Re: [Amps] QSK-1500 chip (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Wed, 07 Jul 2010 20:17:35 -0400; Probably not. The QSK-1500 functioned only because of the specific properties of the MC14011BCP when used at U3B and C. It has been nearly 30 years now and I can't remember if the specific requireme; /archives//html/Amps/2010-07/msg00075.html (10,599 bytes)
4. Re: [Amps] QSK-1500 chip (score: 1): Author: "Jeff Blaine AC0C" <keepwalking188@yahoo.com>; Date: Wed, 7 Jul 2010 19:31:04 -0500; Joe, Thanks for the comment. Tough for me to imagine because the device's switching speed is going to be the low tens of nS range - and the rest of the "ham stuff" with respect to switching is going; /archives//html/Amps/2010-07/msg00076.html (12,546 bytes)
5. Re: [Amps] QSK-1500 chip (score: 1): Author: Roger Parsons <ve3zi@yahoo.com>; Date: Wed, 7 Jul 2010 17:42:50 -0700 (PDT); Motorola ICs are now ON Semiconductor. From Wikipedia: "The company originated as Motorola, Inc.'s Semiconductor Components Group, and continues to manufacture Motorola's discrete, standard analog an; /archives//html/Amps/2010-07/msg00077.html (7,704 bytes)
6. Re: [Amps] QSK-1500 chip (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Wed, 07 Jul 2010 22:15:50 -0400; Jeff, I worked with John "Doc" Sheller (now K8RR) on the QSK-1500 some 30 years ago. I distinctly remember that the MC14011BCP requirement was added to the "service and technical manual" after the un; /archives//html/Amps/2010-07/msg00078.html (14,544 bytes)
7. Re: [Amps] QSK-1500 chip (score: 1): Author: "Jeff Blaine AC0C" <keepwalking188@yahoo.com>; Date: Wed, 7 Jul 2010 21:36:59 -0500; Joel, I saw the comments on the schematic. Interesting. PINs are quiet and fast but wow, easy to fry if you were to inadvertently to behave badly. :) Relays on the QT here for me. The good news is th; /archives//html/Amps/2010-07/msg00079.html (15,850 bytes)

Current List: 1 - 7
Page: [1]