Hi
Need a bit of help with the above project and have used Jim Hagerman's eq calculator linked here (
http://www.hagtech.com/equalization.html ) and come up with the following results.
From the calculator I have Ra=60.953kOhm and Rc=71.819kOhm for the standard Cornet RIAA.
Using these as target values I have EMI requiring Ca (C7)=32nF and Rb (R13)=9.91kOhm and Cb (C8)=842pF and Rd (R23)=3.78kOhm.
I will have to compromise for standard component values, but would be useful if someone could advise just how close I need to get with values for Ra and Rc, +/- 1%, or 10%?
Kind Regards
Grant
