(71B) Basic Bridged-T Notch Filter - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Software Libraries (/forum-10.html) +--- Forum: General Software Library (/forum-13.html) +--- Thread: (71B) Basic Bridged-T Notch Filter (/thread-7464.html) |
(71B) Basic Bridged-T Notch Filter - Eddie W. Shore - 12-23-2016 07:24 PM Basic Bridged-T Notch Filter The program NOTCH calculates the required capacitor and resistor to null out an undesired frequency. Inputs: inductance (H), frequency to nullified (Hz), resistance of the required coil (Ω) Source: Rosenstein, Morton. Computing With the Scientific Calculator Casio: Tokyo, Japan. 1986. ISBN-10: 1124161430 Program NOTCH 244 Bytes, 12/22/2016 Code: 10 DESTROY L,F,I,C,R Notes: Capital Omega Character (Ω): [ g ], [RUN] (CTRL), [ Q ] Example: L = 0.12 H, F = 1170 Hz, Coil Resistance = 30 Ω Output: NOTCH CAPACITOR ≈ 3.08402 * 10^-7 F NOTCH RESISTENCE ≈ 6485.04070 Ω |