How to increase frequency

141 views
Skip to first unread message

Scott Goldthwaite

unread,
Jul 11, 2018, 5:15:44 PM7/11/18
to Portable Sound Blaster
I built version 2.2.2.  The inductor in the BoM isn't available, so I used Digikey 732-9647-ND.  When I turn it on, I can hear the tone (I'm 55 yrs old).  I didn't check the Hz on my scope yet.  How do I increase the frequency?
Message has been deleted
Message has been deleted

Scott Goldthwaite

unread,
Jul 12, 2018, 6:57:33 PM7/12/18
to Portable Sound Blaster
I took some measurements with my scope, probing the tweeter.  Got 13.5 KHz and 53 vpp.  With SW2 closed, it was 7.8 KHz and 61 vpp.  

I'm gonna try a 820mH inductor (Digikey RLB9012-821KL-ND).

Reply all
Reply to author
Forward
0 new messages