On Wed, 4 Nov 1998 13:40:36 +0100 Orduyar writes: >I NEED SOME IDEAS TO FILTER THE EMI RADIATED BY A DC BRUSH MOTOR >(12V.) >I want to certificate CE a design but i have a problem with the EMI >RADIATED >by the motor. >I have problems with the spec. EN55011, Class A , Group 1 Type : >Radiated. >In the frecuency ranges : 30 MHz to 300 MHz I have levels up 30 dB >that it >is max. authorized >level. >Somebody know some filter or design for solve this problem? > Thanks > Interesting problem... Under FCC part 15, motors are considered "incidental radiators" which must emit as little emi as possible, but there are no limits. It gets interesting when an incidental radiator is combined with an unintentional radiator (such as a PIC). Harold Harold Hallikainen harold@hallikainen.com Hallikainen & Friends, Inc. See the FCC Rules at http://hallikainen.com/FccRules and comments filed in LPFM proceeding at http://hallikainen.com/lpfm ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]