Advisory Services Agreement

Exhibit 10.33October 26, 2007Joseph Bronson
6838 Rockview Ct.
San Jose, CA 95120 Re: Advisory Services Agreement Dear Joe: We are pleased that you will continue working with Advanced Energy Industries, Inc. (the " Company" ) following your resignation from the Board of Directors of the Company. Pursuant to this letter agreement (" Agreement" ), you are hereby engaged (effective immediately upon your resignation from the Board of Directors) as an advisor to the Chief Executive Officer. In such capacity, you will provide advisory services to the Company, as and when reasonably requested by the Chief Executive Officer, which services may include advice and support in respect of: d8 public company governance matters d8 presentations to and other communications with the Board of Directors d8 management of the Executive Leadership Team You will provide, and the Chief Executive Officer will request you to provide, a minimum of 25 hours of services under this Agreement per calendar quarter, but you will not be required by the Company to provide m ...