About Us


In 1967 Don Miller founded Aldonex Inc. in Bellwood, Illinois. Working out of a small shop, the company stressed quality and service. Several expansions later the company is still stressing Quality and Service. 

Do you have a rectifier that keeps letting you down? Is your calibration coming due?  

We can repair and calibrate most makes and models of DC power supplies.  Bring it to us. We will do a free test and evaluation of your non-operating equipment. 

Aldonex also offers CE and 3rd party UL certifications.  Click the Read more button below for more info.

Why Choose Us

Quality is what makes Aldonex Inc. a recognized leader in the rectifier industry. This is the standard of measurement that goes into every Aldonex product and service.  This is what makes Aldonex Inc. products perform and last.

Leave it to Us

Doing it yourself does not always pan out. Rely on our knowledge and experience instead. 

We Truly Care

We are small enough to handle you needs with personal service and big enough to tackle the most complex of tasks.

Our Promise to You

We promise to always provide value and outstanding service, regardless of difficulty.

Factory Address:
2917-19 St. Charles Rd.
Bellwood, IL 60104


Mailing Address:

PO Box 66
Wooddale, IL 60191

​Phone: (708) 547-5663
Fax: (708) 547-5738

Aldonex inc. Manufacturer of Quality D.c. Power Supplies Since 1967