Philip Griffiths Posted May 26, 2016 Report Share Posted May 26, 2016 Hi, are there any off the shelf 12v PWM filters to smooth out the voltage signal from an output? (i.e. PWM/digital to analogue voltage converter) Wanting to smooth the signal to my IAC valve to stop it smashing back and forth due to low duty cycle. Thanks,Philip Quote Link to comment Share on other sites More sharing options...
Philip Griffiths Posted May 26, 2016 Author Report Share Posted May 26, 2016 Just answered my own question/sorted the issue - frequency of the output was set far too low. Quote Link to comment Share on other sites More sharing options...
Simon Posted May 26, 2016 Report Share Posted May 26, 2016 (edited) Typically the frequency will be around 200hz for an ISC solenoid. Some times the frequency will cause a harmonic in the intake, making it excessively loud in which case changing the frequency can help. Edited May 26, 2016 by Simon Quote Link to comment Share on other sites More sharing options...
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