Jerry, Here is a dumb statement followed by a dumb question, but I need some education on this issue.
I thought power line harmonics from power supplies were due to the non-sinusoidal waveshapes of the input current waveforms from switchers. Wouldn't a linear power supply create only sinusoidal waveshapes at the line frequency such that there would be essentially no harmonics from the input current waveform (i.e. no special design treatment required for linear designs)? At least this would seem to be true to the extent there is no distortion of the input waveform due to lienar circuitry. Thanks, [email protected] ---------- From: JFix To: emc-pstc Subject: AC powerline harmonics List-Post: [email protected] Date: Friday, May 17, 1996 12:00AM Does anyone know of an inexpensive and simple way to control power line harmonics (IEC 555 type) for medium power (500 -1000W) linear power supplies ? I am familiar with techniques used for switching supplies, but have not run across anything for linear ones. Maybe it cannot be done in a practical way ?? Thanks, Jerry Fix, P.E. Compaq Computer Corp. (713) 320-3613 [email protected]
