Electronic Engineering and Manufacturing
Since 1972

Proudly made in the U S A

NOTICE - Effective 01 FEB 2013 - NOTICE
A & A Engineering is now a part time business
***** We are easing into retirement *****
After 41 years, no more 12 hour work days
Please allow extra time to process all orders
We have moved
Our new address is: 7970 Orchid Drive, Buena Park CA 90620-1930

Effective NOV 2014, company phone and FAX lines have been discontinued

The best way to contact us is via EMAIL to:


Unitrode UC3906 Smart Battery Charger Chip Discussion - get past the bull


Brooks Shera's GPS-Based Frequency Standard is still available, click here

The UC3906N chip with or without resistors is still available, click here

Smart Battery Chargers
Customer Homebrew Projects
Contact Us / Ordering Information

We no longer accept credit cards directly, only through PayPal, (see ordering information)

We now accept check, money order or PayPal

PayPal, American Express, Discover, MasterCard or Visa through (see PayPal information)

Looking for something fishy, check out
Fishy Photos

Website maintained by Stas, W6UCM