Cosmic Ray Muon Detector TeleGarden Pages Time on Mars Bryophyllum Plants Jupiter Radio Astronomy Ancient Pages Salzburg Tourist Guide Earth Magnetometer

H O M E     AJAX & MORE     LINUX & MORE     RTAI     XENOMAI     ADEOS IPIPE           JAVA & BROWSERS     *NIX     ELECTRONICS     REVIEWS     ARTEMIA     FAIRY SHRIMP

Electronics Home Radio RF Electronics Radio - RF - Passive Field Meter - Simple Electronics Atmel ATmega Linux Atmel AVR Simulator with GUI Atmel ATmega - SD card (Secure Digital Card) Flash Memory Extension Atmel ATmega - DCF77 time signal decoder Atmel ATmega - MMC (Multi Media Card) Flash Memory Extension Atmel ATmega I2C EEPROM Example Schematic and C program Atmel ATmega16 Serial Port Example Schematic and C program Atmel AVR ATmega16 Programmer Linux Microchip PIC Pic Programmer Linux PIC - MMC Flash Memory Extension PIC - 32k/64k RAM Extension Misc. stuff Astronomy Timer Gadgets Decoupling the power supply Manhattan style PCB board prototyping for high frequency RF and critical circuits Coil Calculator - Single-layer and mutil-layer coil calculation in javascript Active Bandpass Filter Javascript Tool Active Filter Calculator - Bandpass with OpAmp Designer in Javascript A simple tool for designing active filters using voltage-feedback opamps. Type in the center frequency (fc), bandwidth (B), gain (A) and choose a value for the capacitors (C1, C2 = C; 10nF is a good value to start) and click on "Calculate". Light-grey fields are input fields - dark-grey fields are output fields for the calculated values. fc = Hz B = Hz A = C = nF Q = R1 = Ω R2 = Ω R3 = Ω Reverse engineer the active filter: Use the "Resistor Series lookup" tool below to get values for available resistors and calculate the actual center frequency, bandwidth, Q factor and gain. C = nF R1 = Ω R2 = Ω R3 = Ω Q = fc = Hz B = Hz A = Resistor Series lookup Type in R in Ohm, select the series and click "Suggest" R = Ω E6 E12 E24 E48 Rlower = Ω Rupper Ω Worst case frequencies: Type in your real values of the components, select the tolerance of the capacitors and resistors and click "Calculate". The calculation will reveal the worst case center frequencies. C = nF Capacitors: 1% 2% 5% R1 = Ω R2 = Ω R3 = Ω Resistors: 1% 2% 5% Values @ min. frequency: Values @ max. frequency: Q = Q = fc = Hz fc = Hz B = Hz B = Hz A = A = Last-Modified: Sun, 13 Feb 2005 16:04:49 GMT   Web www.captain.at

go to top © 1996-2010 . All rights reserved. No reproduction, distribution, publishing or transmission of the copyrighted materials at this site is permitted. Policy go to top