[SI-LIST] Re: Decoupling capacitors
- From: Wayne Cooke <wcooke@xxxxxxxxxxxxx>
- To: Michael_Greim@xxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Wed, 8 May 2002 11:03:11 -0400
Hi Michael,
I believe these were called "Micro/Q" capacitors, and were made by Circuit
Components Inc. I am not a "vintage engineer", but I read about these in
Howard Johnson's book "High-Speed Digital Design, a Handbook of Black
Magic". If you have this book, they are on page 289.
Wayne Cooke
Signal Integrity Engineer, Innovance Networks
19 Fairmont Ave, Ottawa, Ont. K1Y 1X4
Tel: (613) 798-9293
email: wcooke@xxxxxxxxxxxxx
-----Original Message-----
From: Douglas C. Smith [mailto:doug@xxxxxxxxxx]
Sent: Wednesday, May 08, 2002 10:45 AM
To: Michael_Greim@xxxxxxxx
Cc: Alexander.Shapira@xxxxxxxxxx; si-list@xxxxxxxxxxxxx; Dieter
Eisenlohr
Subject: [SI-LIST] Re: Decoupling capacitors
Hi Michael,
I remember those capacitors. They were made by a company that also made
little bus bars that were used to carry power and ground around on two
layer boards. I don't remember the manufacturer, but if I do I will let
you know. I have copied this email to Dieter Eisenlohr. There is a good
chance he will know the answer.
Doug
Michael_Greim@xxxxxxxx wrote:
>
> On a non dissimilar tangent, I was generating
> a historical piece on the evolution of decoupling
> and ran into a memory hole that I was hoping
> that you could help me with. Back in the mid
> 80s when we still had dips with power pins on the
> corners, there was a flat capacitor that would
> fit under the chips and whose leads would fit into
> the same holes as the dip power pins, making contact.
> I used these all the time, but for the life of me
> can't remember what they were called. Does anyone
> remember this ancient technology and what it was
> called? Thanks for the help. Vintage engineers,
> where are you??? Any other interesting stories or
> technology from the dark ages would be much appre
> ciated.
>
>
>
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--
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