/members-area/personalblogs/b/blog/posts/how-can-i-adjust-the-pw-0268-ultrasonic-sonar-ranging-ic-frequency-systemhello everyone;i&#39;m working now the PW-0268 ultrasonic sonar ranging IC and i want to augment the range of detection by changing the value of the R4 and C2 so that i can work with a frequency system equal to 60 Khz but i don&#39;t know how i can do that sen-USTelligent Community 12https://community.element14.com/members-area/personalblogs/b/blog/posts/how-can-i-adjust-the-pw-0268-ultrasonic-sonar-ranging-ic-frequency-systemSat, 04 Mar 2017 10:09:14 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:db6b7036-a688-4829-bdd4-58de7dd2adf1michaelkellett1<p>Why do you think that increasing the frequency will increase the range ?</p><p>&nbsp;</p><p>On the data sheet it asks you to contact the chip manufacturer for an 18m capable design which suggests that the standard circuit won&#39;t do.</p><p>&nbsp;</p><p>What range are you achieving now and what transducer(s) are you using ?</p><p>&nbsp;</p><p>MK</p><img src="https://community.element14.com/aggbug?PostID=2630&AppID=293&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/members-area/personalblogs/b/blog/posts/how-can-i-adjust-the-pw-0268-ultrasonic-sonar-ranging-ic-frequency-systemSat, 04 Mar 2017 04:26:27 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:db6b7036-a688-4829-bdd4-58de7dd2adf1dougw1<p>The frequency looks like it is inversely proportional to the capacitance. To decrease the frequency by a factor of 10, try increasing the capacitance by a factor of 10 to 220pf.</p><img src="https://community.element14.com/aggbug?PostID=2630&AppID=293&AppType=Weblog&ContentType=0" width="1" height="1">