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(last in listed first)
- 4/15/2007: Updated the Late Articles page with the addition of Sources 101, pt.
2 (see 4/9/2007 and 3/22/2007 entries below). Feedback on these articles has
been received, and a follow on article is being planned. Comments and
suggestions towards this are welcome. See Contact Us page (left).
- 4/9/2007: Updated the Late Articles page with the addition of Sources 101, pt.
1 (see 3/22/2007 entry below).
- 3/23/2007: Updated the LTC Articles page with listings for Linear Technology
Magazine, and some early excerpts from the June 1991 premier issue. Started
embedded links from What's New.
- 3/22/2007: A new article, "Sources 101", on the design, testing and use of
current source circuits is published in AudioXpress, the 4/07 issue, p10. This is
Part 1 of 2, and will be available on the AudioXpress website in due time.
Also updated the Contact Us page with a spam-proof address (Note: the actual
address hasn't changed, just the display).
- 3/14/2007: Introduced a new LTC Articles page, with the purpose of
highlighting selected applications done for Linear Technology Corporation. The
first entry here is the LT1115 microphone preamp, to be followed (hopefully
soon) by many others .
- 1/04/2007: Updated Links of Interest page with new contact/source information
for the Andy Weekes PCB design.
- 12/22/2006: Updated ADI Books page with the addition of Robert Demrow's
classic article on op amps and instrumentation amps within systems.
- 11/14/2006: Updated Links of Interest page with patent searches. Also, revised
the home page of Comcast site to automatically redirect to this site.
- 11/08/2006: Revised Walt's Books page, to reflect still defective print quality of
Prentice-Hall IC Op Amp Cookbook 3d Ed.
- 10/25/2006: Revised About Us page.
- 10/24/2006: Revised ADI Books page to include links for direct access to Op
Amp Applications by chapter, as well as to the entire book.
- 10/23/2006: Corrected a broken link under Regulator Hardware: on the Links
of Interest page, revised wording on recommended sources.
- 10/17/2006: Added Regulator Hardware: to the Links of Interest page, listing
recommended sources for audio regulator hardware items.
- 05/26/2006: Updated the Regulators and References page, adding Part 3 of
'Regulators for High-Performance Audio', authored by Jan Didden. Thanks to
Jan and Ed Dell of Audio Amateur Incorporated for making this possible.
- 05/01/2006: Added a seven part series of articles from various publications on
the topic of audio line drivers. See the annotated entries on the Classic Articles
page.
- 04/20/2006: Added three more links to Links of Interest page.
- 04/08/2006: Added two magazine links to Links of Interest page. Watch this
space for more additions.
- 02/19/2006: I'm curious about the interest in 'Don't Shun the Shunt Regulator', a
37 year old article that just happens to be among the leaders in current
downloads. What is so fascinating about it? Can it be still useful even today?
Perhaps. On the latter point, one could use a (still available) CA3086 array for
the CA3018, plus a few other changes. It should work OK, or close to the
original at least. I'll be happy to collect data on any such modernisation and
post any results here for those interested. Or provide upgrade hints. Get a 3086
DS here: CA3086 data sheet .
- 01/28/2006: Added five part 1977 The Audio Amateur series on SID and TIM to
Classic Articles page.
- 01/26/2006: Added more SID/TIM material to the Classic Articles page.
Included is a 1977 guest editorial from The Audio Amateur, and the 1977 AES
paper. Thanks to Paul Reid for his continuing encouragement on this topic
(more to be added as scanning progresses).
- 01/25/2006: Added Links of Interest page, to highlight outside links which have
interests common to this site, and feature unusual qualities.
- 01/19/2006: By request, added 'An Overview of SID and TIM' to the Classic
Articles page.
- 01/16/2006: Updated the ADI Books page with a new link to Chuck Hansen's
Op Amp Applications review, and noted the availability of (corrected) second
printing copies of Newnes book, Op Amp Applications Handbook.
- 01/04/2006: Updated the Regulators and References page with the addition of
'Don't Shun the Shunt Regulator' and 'IC Regulated Power'. Revised main Index
page to reflect 2006 and termination of Comcast site.
- 12/30/2005: Replaced damaged copy of Regs_for_High_Perf_Audio_1.pdf
under the Regulators and References page. Thanks to two visitors who alerted
me to this. This is, incidentally, the most popular file for downloads.
- 12/21/2005: Updated the Regulators and References page with the addition of
'Getting the Most from IC Voltage References'.
- 12/16/2005: Updated the Contact Us page to take advantage of the visitor's
email program and the Mailto: function. Not many folks have tried to send mail...
maybe this will help.
- 12/09/2005: Added 'A Real-Time Signal Test for Capacitor Quality' to the
Classic Articles page.
- 12/08/2005: Added Walt's Books page, and updated the Library links for same.
Detailed notes:
- Feedback on the book search function will be appreciated. Watch the
ISBN and book matchups, sometimes they don't jive.
- Note especially the print quality caveat on the Prentice-Hall edition of
IC Op Amp Cookbook 3d Ed. Repeated complaints to the publisher on
this issue have gone unheeded.
- 12/05/2005: Added Regulators page, and updated the Library links for same.
Notes: See Parts 1 and 2 of the 1995 TAA regulators series. Traffic is picking
up, with site now indexed by Google. ED Archives is the most popular page
visited.
- 12/04/2005: Added Classic Articles page, Late Articles page, and updated the
Library links for same. Updated ED Archives page, and updated the Library
links for same.
- 11/21/2005: Posted notice on Comcast site linking to this new site. This
"officially" opens this site for traffic (although it is still under construction).
Updated Library folders ED and ADI. Comcast site to go dark 12/14/2005 or
thereafter.
- Updated miscellaneous content, November 19, 2005.
- New domain and new web site first established, September 2005.