High Pass Filter | Electronic Project Circuits

Posts Tagged ‘high pass filter’

Voice Bandwidth Filter

This circuit passes frequencies in the 300Hz – 3.1kHz range, as present in human speech. The circuit consists of cascaded high-pass and low-pass filters, which together form a complete band-pass filter. One half of a TL072 dual op amp (IC1a) together with two capacitors and two resistors make up a second-order Sallen-Key high-pass filter. With the values shown, the cut-off frequency (3dB point) is around 300Hz. As the op amp is powered from a single supply rail, two 10kO resistors and a 10µF decoupling capacitor are used to bias the input (pin 5) to one-half supply rail voltage.
The output of IC1a is fed into the second half of the op amp (IC1b), also configured as a Sallen-Key filter. However, this time a low-pass function is performed, with a cut-off frequency of about 3.1kHz. The filter component values were chosen for Butterworth response characteristics, providing maximum pass-band flatness. Overall voltage gain in the pass-band is unity (0dB), with maximum input signal level before clipping being approximately 3.5V RMS. The 560O resistor at IC1b’s output provides short-circuit protection.
Author: M. Sharp – Copyright: Silicon Chip Electronics
Source: http://www.extremecircuits.net/

Be the first to comment - What do you think? Posted by admin - September 8, 2010 at 4:03 am

Categories: Oscillator generator, RF-Radio Frequency Tags: active bandpass filter, Bandpass Filter, high pass filter, Low Pass Filter

Active high pass filter circuit using LM741

This is active high pass filter circuit for 327Hz frequency using LM741 or LM741 circuits. It will use to build Harmonic at 3 of 130.81 frequency have the value at least. More than the frequency Fundamental 30 dB, for output be sawtooth wave form for use in sound of music way system Electronic design will use the circuit filters three rank frequency. By have 3 dB you slopes can use Op-amp IC number LM741 or number LF351, it will meet the frequency well.

Be the first to comment - What do you think? Posted by admin - August 19, 2009 at 9:22 am

Categories: Op-amp circuit, Oscillator generator Tags: Active high pass filter circuit, Filter circuits using op amp, high pass filter, lm741 circuits

Simple High Pass Filter using IC 741

This be Simple high pass Filter perform filter especial tall frequency can change only. By use IC 741 , be the integrated circuit op-amp very the circuit helps to are high frequency Filter model to be simple. By from the circuit will let 750 HZ frequencies s go up change more well , 60HZ frequencies are or lower. By friends can change the value RC for filter the frequency that can want which can see the detail has followed circuit picture yes.