Grape Technical Services, LLC

                          Specialists in solving your difficult
                                analog and power electronics problems




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Custom Switchmode Power Supply

This is a low cost, 300W, triple output, open frame AC-DC power supply.  It incorporates a power factor correcting boost converter front end (which reduces line current harmonics to well below the EN61000-3-2 limit), followed by isolating two transistor forward converters.  These forward converters supply tightly regulated voltages to a high speed line printer application.  There are severe peak current loading requirements on two of the outputs, as printer hammers fire and various motors (paper feed, ribbon feed, paper stacker, cooling fans, etc.) start and stop in the system. Unit complies with FCC "B" level EMI in an open frame (non shielded) environment, and is safety agency approved for worldwide operation.  In the system, the unit also complies with Energy Star.


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(310) 697-3164

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Contact Grape Technical Services today for a free, no obligation, initial telephone consultation.  We will confidentially discuss your specific circumstance and determine whether you would benefit from additional services.

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Last modified on 11 May 2005.