Dear Dennis...
EN-Genius Network's Dennis Feucht answers your design
queries in his new Circuit Design Clinic!
April, 2007
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EN-Genius Network presents a new, interactive
analog design service to readers! Send us your design questions (with
relevant data; schematics in JPEG or GIF, please) for some free
engineering advice from EN-Genius Network's circuit
consultant, Dennis Feucht, on how you might solve a design problem or
improve circuit performance. Submissions may be edited for clarity or
brevity, and submitters and their email addresses will remain anonymous
(unless otherwise indicated). Please send your questions to Dennis here.
Low-Cost Commercial Power-Source Inverters
by Dennis L. Feucht
Q: I bought a low-cost 300 W inverter and it has failed. Are they hard to repair? What can I do to improve its reliability?
A: The market is flooded with low-cost commercial inverters, such as those sold by Vector Mfg Co, Koss, or those from undisclosed Asian sources. Many of these inverters have one characteristic in common: to be price competitive, they have cut corners in the design, resulting in unreliable products. Neither the repair nor the design of power-source inverters can be adequately covered in this article, or its sequels. In the style of the Circuit Design Clinic, some more practical design aspects will be considered, leaving the more involved theoretical aspects for TechNotes.
...download complete article here (330 KB PDF)
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