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Re: [N8VEM-S100:121] call for ECB SBC V2 information
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- Subject: Re: [N8VEM-S100:121] call for ECB SBC V2 information
- From: Jack Rubin <jack....@ameritech.net>
- Date: Wed, 16 Mar 2011 07:10:29 -0700 (PDT)
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- References: <71A05903-9A9D-4206-9DC8-FA4CACD52675@mac.com>
You're probably referring to the multiple "bypass" capacitors which limit
spiking on fast responding TTL logic. They are generally "monolithic" type in
the .1 to .01 uF range. Color varies depending on vendor and packaging spec, but
they are are often yellow-orange in color, though I've often used bright blue
ones as well. On older S100 boards (1980's vintage), these were often ceramic
disk capacitors, same value but physically quite a bit larger, again in a
variety of colors. Orange, red and green were common.
----- Original Message ----
> From: Douglas Goodall <douglas...@mac.com>
> To: n8vem...@googlegroups.com
> Sent: Wed, March 16, 2011 8:29:14 AM
> Subject: [N8VEM-S100:121] call for ECB SBC V2 information
> Hi friends,
> I am building my first SBC V2. I am already impressed with the card format
> due to its small size and weight. I think these Eurocards are very nice.
> I bought most of what I needed from Jameco, and I am writing up a new
> Jameco parts list with part numbers... Most of the parts I understand, but I
> am a little confused about the capacitors. The few pictures I have found of
> built up boards appear to have little blue rectangular capacitors, which I am
> not familiar with.
> It would be very helpful if someone could provide a close-up photo of a
> built up board, and some more explicit information about the capacitors.
> I have so many questions about small details of construction that would be
> answered by a good photograph.
> There are a variety of documents on the wiki about the SBC, but most of
> them are two years old, and pre-V2. As soon as I get critical mass on this
> board, I will write up a very complete how-to with explicit parts lists...
> Can someone help me out a little with this please?
> Douglas Goodall