ATTENTION

If you are thinking of building any circuits from this site, before commencing, you need to look in the directory

"Errata, Corrections, Notes, Updates, etc"

in order to see if there have been any corrections, notes or updates issued for the particular document.

As much as possible the files in this directory are named the same as the original article. Plus there will be the initials of the original document and the date of the article where it applies. In the case of a multi part series, the date will will refer to the date of Part 1 in most cases. 

A quick check there can save you a lot of time needlessly chasing down an error. 

The site manager cannot guarantee that all corrections, notes and updates have been found for each  file. Due to the random nature of discovery of old documents it is not possible that all such files have been found as the corrections, notes and updates are usually published until some time later. Usually monthe later. Sometimes years. 

As these circuits and articles are meant to be educational to assist in the design of new circuits, the operation of any circuit is not guaranteed. The same applies to maunals and schematics of commercial products. 

CHECK BEFORE YOU BUILD!