Gerhard Fiedler wrote:
> Hi,
> 
> is there a problem with increasing the PWM frequency of a solenoid driver?
> Assuming that the driver itself is fast enough.
> 
> I just wonder what effects happen with increasing frequency. In theory,
> from the point on where the current is basically DC, there shouldn't be any
> dramatic changes when the frequency gets still higher. 
> 
> I'm not talking about MHz here; I'm just wondering whether increasing the
> frequency from originally 30Hz to 1kHz can get me into trouble.
> 
> Any ideas or pointers anyone?
> 
> Thanks,
> Gerhard

I don't foresee any issues. 30Hz seems really low though. By "driver" do 
you mean the physical solenoid or the electrical driver?

But yes, once the current gets to close to DC you won't see any 
differences except for greater switching losses and a higher frequency 
noise coming from it.


-- 
Martin K
http://wwia.org/sgroup/biofuel/
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist