Dynomotion

Group: DynoMotion Message: 6626 From: chrismd500 Date: 2/1/2013
Subject: Preferred PWM frequency DC motors?
Does anyone here have experience with what PWM frequency to use for DC (brushed) motors? Read somewhere that 10kHz-15kHz is choice of preference.. but not sure what a frequency will impact other than smoothness and probably audible noise. Or is it just trial and error.
Group: DynoMotion Message: 6628 From: Tom Kerekes Date: 2/1/2013
Subject: Re: Preferred PWM frequency DC motors?
Hi Kris,

I think that is basically it.  For that small motor I would start with a KFLOP PWM Pre-Scaler value of 3 which would PWM at about 16KHz.

Regards
TK

Group: DynoMotion Message: 6635 From: chrismd500 Date: 2/3/2013
Subject: Re: Preferred PWM frequency DC motors?
Thanks Tom.

--- In DynoMotion@yahoogroups.com, Tom Kerekes wrote:
>
> Hi Kris,
>
> I think that is basically it.  For that small motor I would start with a KFLOP PWM Pre-Scaler value of 3 which would PWM at about 16KHz.
>
> Regards
> TK
>
>
>
> ________________________________
> From: chrismd500
> To: DynoMotion@yahoogroups.com
> Sent: Friday, February 1, 2013 6:33 AM
> Subject: [DynoMotion] Preferred PWM frequency DC motors?
>
>
>  
> Does anyone here have experience with what PWM frequency to use for DC (brushed) motors? Read somewhere that 10kHz-15kHz is choice of preference.. but not sure what a frequency will impact other than smoothness and probably audible noise. Or is it just trial and error.
>