title: Essential Electronics For PC Technicians (Electrical and Computer Engineering Series)
author:  John W Farber 
description: John Farber (Los Gatos, CA) is an instructor at Foothill College, where he teaches a variety of courses to prepare students to pass the A+ examinations. He has 25 years experience teaching electronics technology, and 11 years teaching PC repair.
zlib_text: Circuits for the Hobbyist
  For your electronics hobby entertainment; ENJOY!
  It is assumed that you have AT LEAST the equivalent of a Basic Electronics certificate for the 
  electronics projects listed on this page. Other projects require more advanced electronics. A lot of 
  these circuits assume the latter so I will no longer answer the tons of emails in regards to that. If you 
  wish to learn more about electronics there is enough of that available on the internet. 
   Circuits' Message Board  Ask your questions here. Someone may answer them.
   Alternating On-Off Control
   Audio Pre-Amplifier #1
   Automatic 9-Volt Nicad Battery Charger
   Basic IC MonoStable Multivibrator
   Basic RF Oscillator #1
   Basic LM3909 Led Flasher
   Battery Monitor for 12V Lead-Acid
   Battery Tester for 1.5 & 9V
   Bench Top Powersupply, 0-30V/0-10A, Part 1
   Bench Top Powersupply, 0-30V/0-10A, Part 2
   Bench Top Powersupply, 0-30V/0-10A, Part 3
   Birdie Doorbell Ringer
   'Bug' Detector with Beep
   Car Converter for 12V to 9V
   Ca