Author: Before 15 years ago (year is 2009), Internet was hard to search/reach and there were no quality info (Google wasn't invented) so I spent lot of time digging out the specifications of various electronic circuits. All data collected is summarized on these pages. Nowdays, all this information is almost obsolete, and I kinda lost interest in electronics, but nevertheless I will leave these pages as they were.
How to do
Tomi Engdahl page: very
useful page at which you can find docs on various things such as:
electronic circuits (audio,video,computer,data communication
circuits,..),
description of opamps (LMxxx), 555 timer chip,MAX232 chip for
RSs232 communication, there is also description of PC-hardware:
ISA,PCI bus, Plug'n Play technology...
Electrical
Engineering Circuits Archive is very rich site with many
electronic schemes
Circuit
Cookbook WWW page: It contains a great variety of files of
interest to Electrical Engineering students and electronics
enthusiasts (various el. schemes).
Electronic manufactures and sellers
Byte Runner-16550 16650 UART
serial comm cards: info on UART chips
SGS-THOMSON Microelectronics Home
Page
HITACHI Home Page
Texas Instruments
Software for designing electronic circuits
Interactive Image Technologies: Electronic WorkBench