[SI-LIST] Re: REG AC Capacitive Loading
- From: "Bill Harris" <wmharristn@xxxxxxxxxxx>
- To: <emcesd@xxxxxxx>, <g.h.johnson@xxxxxxxxxxx>
- Date: Wed, 6 Jun 2012 10:27:13 -0400
Shall we discuss the merits of the "modified" wrap vs. standard wrap? How
about the "no-strip" tool that slit the insulation as it wrapped around the
post, at least it was supposed to? Of course you didn't know which wires
did slit and which didn't until you powered-up. Those were the days!
Bill
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Tesla
Sent: Tuesday, June 05, 2012 8:49 PM
To: g.h.johnson@xxxxxxxxxxx
Cc: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: REG AC Capacitive Loading
it is a pity that i did not experience the years wire wrap gun.
Telsa(An unemployed SI)
At 2012-06-06 01:11:29,"Jerry Johnson" <g.h.johnson@xxxxxxxxxxx> wrote:
>And it has me remembering wire mats of twisted pair six inches or more
>deep and perhaps 4 feet by 5 feet on the back of mainframe computers of
>the era. Thankfully timing was not as much of an issue as one might
>think since cycle times were over 100ns! All of those twisted pair
>interconnected modules with perhaps one or two gates or flip-flops.
>Working a wire wrap gun through a mat like that and hitting the correct
>posts was a skill. Probing with a scope probe was also much fun.
>
>Jerry (Retired SI guy)
>
>
>
>On 6/5/2012 8:56 AM, Ken Wyatt wrote:
>> Oh Steve, you're too much! As one of the knights from that period, I
still own a wire-wrap weapon from master Radio Shack, which I intend to
display among my treasured historical artifacts. Your reminisces from that
epoch brought back painful memories of troubleshooting mis-wires in a tangle
of (transmission line) spaghetti.
>> Cheers, Ken
>> _______________________
>> Kenneth Wyatt
>> Wyatt Technical Services LLC
>> Woodland Park, CO
>> Email Me! | Web Site | Blog
>> Subscribe to Newsletter
>> Connect with me on LinkedIn
>>
>> On Jun 5, 2012, at 1:16 AM, steve weir wrote:
>>
>>> Most MSI is from the Age of Augat, when armies of gnomes fought
>>> using ancient weapons they called wire-wrap guns. During that
>>> epoch, digital engineers heard rumors and stories of mythical beasts
>>> called transmission lines that only the few such as Seymour of Chippewa
dared tame.
>>>
>>>
>>> Steve
>>>
>>> On 6/4/2012 11:01 PM, Tesla wrote:
>>>> Hi, Steve
>>>>
>>>> What is "MSI from 1975"?
>>>> Does it have some stories?
>>>>
>>>> Thanks.
>>>>
>>>> Tesla.
>>>>
>>>>
>>>>
>>>>
>>>> At 2012-06-02 21:42:46,"steve weir"<weirsi@xxxxxxxxxx> wrote:
>>>>> 50pF for a single input sounds like someone cut and pasted a spec
>>>>> from inside some prehistoric cave painting. Is the buffer made
>>>>> with MSI from 1975? You should seriously question any values above
about 8pF.
>>>>>
>>>>> Steve.
>>>>> On 5/31/2012 8:59 PM, Vinothkumar D wrote:
>>>>>> Hello Everyone,
>>>>>>
>>>>>> I have a problem in AC loading in which the Cout of FPGA<< Cin of
a Bus controller. I have used a buffer between FPGA and Bus controller still
I could not meet ac loading requirements.
>>>>>> Eg:
>>>>>> FPGA Cout = 5pF
>>>>>> Buffer Cin = 5pF and Cout = 50pf Each Bus controller Cin = 50pF
>>>>>> Total Bus controllers Cin = 150pf
>>>>>>
>>>>>> Now I have connected the ADD/DATA and control pins through Buffer
which is driving three bus controllers, I am meeting the ac loading
requirements.
>>>>>>
>>>>>> Will it create any timing issue . Please help me on this.
>>>>>>
>>>>>> Regards
>>>>>> Vinothkumar.D
>>>>>> E-mail ID : Vinothkumar.D@xxxxxxxxxx
>>>>>>
>>>>>> Larsen& Toubro Limited
>>>>>>
>>>>>> www.larsentoubro.com
>>>>>>
>>>>>> This Email may contain confidential or privileged information for the
intended recipient (s). If you are not the intended recipient, please do not
use or disseminate the information, notify the sender and delete it from
your system.
>>>>>>
>>>>>> Earth Day. Every Day.
>>>>>> -----------------------------------------------------------------
>>>>>> -
>>>>>> To unsubscribe from si-list:
>>>>>> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject
>>>>>> field
>>>>>>
>>>>>> or to administer your membership from a web page, go to:
>>>>>> //www.freelists.org/webpage/si-list
>>>>>>
>>>>>> For help:
>>>>>> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>>>>>>
>>>>>>
>>>>>> List forum is accessible at:
>>>>>> http://tech.groups.yahoo.com/group/si-list
>>>>>>
>>>>>> List archives are viewable at:
>>>>>> //www.freelists.org/archives/si-list
>>>>>>
>>>>>> Old (prior to June 6, 2001) list archives are viewable at:
>>>>>> http://www.qsl.net/wb6tpu
>>>>>>
>>>>>>
>>>>>>
>>>>> --
>>>>> Steve Weir
>>>>> IPBLOX, LLC
>>>>> 150 N. Center St. #211
>>>>> Reno, NV 89501
>>>>> www.ipblox.com
>>>>>
>>>>> (775) 299-4236 Business
>>>>> (866) 675-4630 Toll-free
>>>>> (707) 780-1951 Fax
>>>>>
>>>>> All contents Copyright (c)2012 IPBLOX, LLC. All Rights Reserved.
>>>>> This e-mail may contain confidential material.
>>>>> If you are not the intended recipient, please destroy all records
>>>>> and notify the sender.
>>>>>
>>>>> ------------------------------------------------------------------
>>>>> To unsubscribe from si-list:
>>>>> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject
>>>>> field
>>>>>
>>>>> or to administer your membership from a web page, go to:
>>>>> //www.freelists.org/webpage/si-list
>>>>>
>>>>> For help:
>>>>> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>>>>>
>>>>>
>>>>> List forum is accessible at:
>>>>> http://tech.groups.yahoo.com/group/si-list
>>>>>
>>>>> List archives are viewable at:
>>>>> //www.freelists.org/archives/si-list
>>>>>
>>>>> Old (prior to June 6, 2001) list archives are viewable at:
>>>>> http://www.qsl.net/wb6tpu
>>>>>
>>>>>
>>>> ------------------------------------------------------------------
>>>> To unsubscribe from si-list:
>>>> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject
>>>> field
>>>>
>>>> or to administer your membership from a web page, go to:
>>>> //www.freelists.org/webpage/si-list
>>>>
>>>> For help:
>>>> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>>>>
>>>>
>>>> List forum is accessible at:
>>>> http://tech.groups.yahoo.com/group/si-list
>>>>
>>>> List archives are viewable at:
>>>> //www.freelists.org/archives/si-list
>>>>
>>>> Old (prior to June 6, 2001) list archives are viewable at:
>>>> http://www.qsl.net/wb6tpu
>>>>
>>>>
>>>>
>>>
>>> --
>>> Steve Weir
>>> IPBLOX, LLC
>>> 150 N. Center St. #211
>>> Reno, NV 89501
>>> www.ipblox.com
>>>
>>> (775) 299-4236 Business
>>> (866) 675-4630 Toll-free
>>> (707) 780-1951 Fax
>>>
>>> All contents Copyright (c)2012 IPBLOX, LLC. All Rights Reserved.
>>> This e-mail may contain confidential material.
>>> If you are not the intended recipient, please destroy all records
>>> and notify the sender.
>>>
>>> ------------------------------------------------------------------
>>> To unsubscribe from si-list:
>>> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject
>>> field
>>>
>>> or to administer your membership from a web page, go to:
>>> //www.freelists.org/webpage/si-list
>>>
>>> For help:
>>> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>>>
>>>
>>> List forum is accessible at:
>>> http://tech.groups.yahoo.com/group/si-list
>>>
>>> List archives are viewable at:
>>> //www.freelists.org/archives/si-list
>>>
>>> Old (prior to June 6, 2001) list archives are viewable at:
>>> http://www.qsl.net/wb6tpu
>>>
>>>
>>
>> ------------------------------------------------------------------
>> To unsubscribe from si-list:
>> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>>
>> or to administer your membership from a web page, go to:
>> //www.freelists.org/webpage/si-list
>>
>> For help:
>> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>>
>>
>> List forum is accessible at:
>> http://tech.groups.yahoo.com/group/si-list
>>
>> List archives are viewable at:
>> //www.freelists.org/archives/si-list
>>
>> Old (prior to June 6, 2001) list archives are viewable at:
>> http://www.qsl.net/wb6tpu
>>
>>
>>
>>
>
>------------------------------------------------------------------
>To unsubscribe from si-list:
>si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
>or to administer your membership from a web page, go to:
>//www.freelists.org/webpage/si-list
>
>For help:
>si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>
>List forum is accessible at:
> http://tech.groups.yahoo.com/group/si-list
>
>List archives are viewable at:
> //www.freelists.org/archives/si-list
>
>Old (prior to June 6, 2001) list archives are viewable at:
> http://www.qsl.net/wb6tpu
>
>
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
