DIMM Module Pin Outs

In order to reduce the page size of the DIMM memory module pin out, the page was divided up into two different pages. the original page address now holds the pin out for the Rear Side 168-pin DIMM Pin Out, while the new page address holds the Front Side 168-pin DIMM Pin Out.

The change reduces a 56k byte file into two 35k byte files. The change is not so much for a web visitor but for the Google system checking page loading times. So now the two pages load twice as fast; however both pages also look almost identical. So it may well be that Google will not rank the new page in terms of searches, but the original page should still rank. The web site only has several other pages that are larger in size, not including graphic files. Most of the larger pages all relate to interface bus pin-outs, except for the 144 Pin SODIMM module which is at 40 k bytes. However the 144-pin SODIMM is one big table while the 168-pin DIMM pin outs were a set of 4 different tables for front and back pins.

Most pages on the site are around the 10 to 15k size, not including pic files.

While checking the page stats, I think I found a page with no incoming links to it?
Buffered 168 pin DIMM Modules.

Looks like the page linking to it had an address typo. Google Analytics indicates that the page has only received 2 pages views between 2007 and 2010. With that few page views the page gets lost in the report of web addresses vs page views. Down around the 2 page view section the report is full of 'wrong page addresses' which are not real pages.

Engineering Dictionary

I'm adding new technical terms to the Engineering Dictionary all the time. I try to keep the pages a certain length, so from time to time I divide them up to keep the page lengths about the same.
One new page starts with the Pull-Down Resistor Definition, which was divided off from the page starting with the Definition of PRBS. It doesn't matter which page a technical definition is on, except for page length, because at the top of each page is a directory for that particular letter. So a visitor can quickly move to the correct page with out having to scroll through a number of engineering definitions they may not be interested in.
 A second update was made to the page starting with the PCB Term Via, as in a plated hole in a printed wiring board. The new follow on page starts with the Definition of Volt.

I don't divide the pages up that often because there are a number of issues with making a new page from an existing page, plus the pages grow in size slowly. Of course it takes a few weeks for the new page to be found by the search engines. With Google that also means that it will be at least 3 months for the new listing to receive a page rank. Following that lack of page rank also implies that terms that were search-able may no longer be found in a search, until they get a little page rank.

Another problem with this type of new page is that the page that was just generated appears to have duplicate content to the page it was derived from. Remember the existing page was already in a search engine cache, so when the new page shows up it looks just like the 'older' page. So it takes some time before both pages are spidered [by the search engines] and appear to be different. The bottom line is that any definitions residing on the new page are unreachable by the search engines for some months, new page or not.

Audio Circuit Diagrams

Added a few pages covering audio controls a few weeks ago, looks like some have been indexed already.
Audio Base Adjustment.
Audio Treble Adjustment.
Audio Midrange Adjustment.
Audio Tone Adjustment.
Audio Loudness Adjustment.
A few of the additions provide some circuit analysis like the page covering Base control, while the page on Loudness just shows a simple circuit with no values. Same with the Tone control, just a circuit with no values. I've been wanting to add a audio control schematic for a while now, a partial schematic has been in my to-do list for months. So I'm just glad I finally got around to adding some data, partial or not. Each of the new pages is linked of each other and from the correct page in the Engineering Dictionary.

The companion site also has a few Audio Amplifier circuits which these could be applied to, and a Speaker Amplifier circuit.

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Low Page Views During 2010

Here are some pages that received little or no page views during 2010. These pages received 10 or less page views. There are hundreds of pages that never reached 365, or one page view a-day.

The FCIP protocol is brefly covered on a single page, with less than a paragraph of text which might explain why it receives no page views. The iSCSI Protocol page has the same problem, but with 15 page hits for the year.

A page covering 2N3485 High Temperature Operation received 8 page views. A failed section that receives very few page views. It could be that many of the pages in this section cover transistors that are no longer used, or maybe not in mass production. In any case the data is no the site, if some one did want to use it, But I've been up dating these pages for three years now with little or no success. Same deal for Over-Driving a 2N4237 Transistor, with 9 page views.

Of course this list has to include one of the pages from the Manufacturers Directory, this one listing companies starting with Vm. Having no page rank after 5 years on the internet and 13 page views for all of 2010, but that fits the entire section.

The new page on Doppler Shift failed to receive any page hits. Another new page relating to TTL OR Gates, but this one looks to contain almost no data.

A section on how to design an equipment chassis contains a page about Water Sensors, maybe I should just remove it because it costs my server more in bandwidth than I receive in page views. Another section around the same size covers Interface Buses in alphabetic order is doing about the same, guess no one needed that enhancement.

The content page for [page deleted] had 8 page views for all of 2010. It's a small section of a dozen pages that did much better a few years back, and I'm not sure why the page views have declined so bad. But that;s ok, because I only wrote it as a start to help a friend get into web development. The pages have zero to do with engineering.

transistor Overheating

There were a number of pages added a few years ago that covered temperature derating of transistors. The pages either covered power derating for air temperature or component case temperature. Anyway none of those pages are doing very well, in fact most don't even get a page-view per day.

It's not like I'm going to remove the pages or anything, but I would like to see more activity.
Transistor Related pages:

2N3441 NPN Transistor.
2N4931 PNP Transistor.
2N5003 PNP Transistor.
2N5002 NPN Transistor.
2N6691 NPN transistor.

In the hope that some day they might start doing better I keep up-dating them, although after 2 years of updates it appears that they may never take-off. These are links to pages that were never mentioned in this blog, so they are linked now. There are a number of others that have never been linked, but what's the point.

There are groups of other pages that don't do that well either.
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