







December 15, 1986



Jack Barker
Summit Electronics
855 East Collins Blvd.
Richardson, TX  75081


Subject: FX300-3001 power supply failure

Dear Mr. Barker;

The conditions in which Summit's power supply failed were as follows:
	
	Ambient Temperature = 40 C,
	Airflow		    = 10-20 CFM,
	AC input	    = 117 VAC,
	DC output = +5 VDC @ 38 A, +/-12 VDC @ 1 A each, -5 VDC @ 2 A.
(Note the 5 volt auxillary supply was configured as a negative supply.)

We are interested in using your power supply in our computer systems because
of their small physical size. We would appreciate the opportunity to work with
Summit. Please send me a copy of your failure analysis report. Thank you.




Sincerely,



Robert T. Briody
Design Engineer
