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Surge suppression idea

Eavesdropper
Is it possible to use a Ferrite Bead as a surge suppressor for servos, steppers, other motors? Ferrite beads are good for high frequency suppression, so how big would one have to be for low frequencies? This question is inspired off of what a friend of mine has suggested.
 
 
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    Since the frequency of the transients generally originated from the motors are very less the effective impedance offered by the beads would be very less.So it would not be effective in reducing the transient current.So it is not an effective solution.

     

    As mentioned in the previous blog it can be used to control(but the effect is minimal compared to an inductor) the di/dt and dv/dt of the incoming transients.

  • 0 in reply to Former Member

    Hi guys,

    offten are realy good help if you use in both line of the motor rod core chokes and a c-cap with max 1nF. Possible to get them as SMD as well or our WE-PD2 series or WE-PF series. The inductance should be few microH (max.10uH). I would not suggest to use WE-CBF( chip bead ferrite) because of the high transients should be a wire used inductor not multilayer. You also could try to use a CMC (common mode choke) if the motor are the antenna , but in that case the CMC should be placed to the control unit thne the cable then the motor.

    Good luck!

    ;-)

    Lorandt

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  • 0 in reply to Former Member

    Hi guys,

    offten are realy good help if you use in both line of the motor rod core chokes and a c-cap with max 1nF. Possible to get them as SMD as well or our WE-PD2 series or WE-PF series. The inductance should be few microH (max.10uH). I would not suggest to use WE-CBF( chip bead ferrite) because of the high transients should be a wire used inductor not multilayer. You also could try to use a CMC (common mode choke) if the motor are the antenna , but in that case the CMC should be placed to the control unit thne the cable then the motor.

    Good luck!

    ;-)

    Lorandt

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