(HP-67) Notch Filter design - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Software Libraries (/forum-10.html) +--- Forum: HP-65/67/97 Software Library (/forum-12.html) +--- Thread: (HP-67) Notch Filter design (/thread-15228.html) |
(HP-67) Notch Filter design - SlideRule - 06-20-2020 11:22 AM An extract from Designing A Notch Filter With A Programmable Calculator, Albert E. Hayes Jr., dB Magazine (1979-05), pgs 73-75 " With a little help from his HP-67 calculator, Dr. Hayes shows us how to design a notch filter … … Table 1 is a 51-step program which has been written for the Hewlett-Packard HP-67 calculator. It can be stored on a recorded magnetic card, so as to be readily available any time a bridged-T filter design is required … Table I—The program for the bridged-T notch filter, run on an HP-67 programmable calculator. It can be slightly condensed for use on the HP-25 by eliminating steps 014. 030 and 045, which are included for programming convenience only … … … The program is given in Table II—this time without explanatory remarks in the table. Try deciphering it yourself before reading the program analysis … Table II—The program for calculating R and C for the parallel-T notch filter shown in Figure 2 … " BEST! SlideRule |