Comments on: 3 Band graphic equalizer circuit. http://www.circuitstoday.com/3-band-graphic-equalizer-circuit An Authentic Resource on Electronics Thu, 09 Feb 2012 09:03:04 +0000 hourly 1 http://wordpress.org/?v= By: apc http://www.circuitstoday.com/3-band-graphic-equalizer-circuit#comment-63384 apc Thu, 06 Oct 2011 14:31:45 +0000 http://www.circuitstoday.com/?p=292#comment-63384 hello sir can u please provide details about its working hello sir
can u please provide details about its working

]]> By: seetharaman http://www.circuitstoday.com/3-band-graphic-equalizer-circuit#comment-61008 seetharaman Sat, 30 Jul 2011 11:35:24 +0000 http://www.circuitstoday.com/?p=292#comment-61008 Hi Davis you can use TL061, 71 or 81 Hi Davis you can use TL061, 71 or 81

]]> By: EQUALIZER 12 BAND SCHEMATICS | Cars Parts & Accessories http://www.circuitstoday.com/3-band-graphic-equalizer-circuit#comment-60866 EQUALIZER 12 BAND SCHEMATICS | Cars Parts & Accessories Thu, 28 Jul 2011 16:30:09 +0000 http://www.circuitstoday.com/?p=292#comment-60866 [...] equalizer 12 band schematics circuitstoday.com [...] [...] equalizer 12 band schematics circuitstoday.com [...]

]]> By: SOLOMON DAVIS http://www.circuitstoday.com/3-band-graphic-equalizer-circuit#comment-7117 SOLOMON DAVIS Wed, 12 May 2010 05:23:40 +0000 http://www.circuitstoday.com/?p=292#comment-7117 Sir I don't get the ic LF351 in the market.Is there any substitute for it Sir I don’t get the ic LF351 in the market.Is there any substitute for it

]]> By: SOLOMON DAVIS http://www.circuitstoday.com/3-band-graphic-equalizer-circuit#comment-7116 SOLOMON DAVIS Wed, 12 May 2010 05:23:04 +0000 http://www.circuitstoday.com/?p=292#comment-7116 Sir I don't get the ic LM351 in the market.Is there any substitute for it Sir I don’t get the ic LM351 in the market.Is there any substitute for it

]]> By: Jon Glavin http://www.circuitstoday.com/3-band-graphic-equalizer-circuit#comment-6056 Jon Glavin Wed, 24 Mar 2010 18:42:47 +0000 http://www.circuitstoday.com/?p=292#comment-6056 Hi there, could you possibly tell me the formulas to calculate the different frequencies? Thankyou Hi there, could you possibly tell me the formulas to calculate the different frequencies?

Thankyou

]]> By: Sebastian http://www.circuitstoday.com/3-band-graphic-equalizer-circuit#comment-5515 Sebastian Mon, 01 Mar 2010 09:45:07 +0000 http://www.circuitstoday.com/?p=292#comment-5515 Oh, and another question: How is the EQ-band frequencies calculated given the component values? Oh, and another question:
How is the EQ-band frequencies calculated given the component values?

]]> By: Sebastian http://www.circuitstoday.com/3-band-graphic-equalizer-circuit#comment-5513 Sebastian Mon, 01 Mar 2010 09:18:25 +0000 http://www.circuitstoday.com/?p=292#comment-5513 How is the input audio signal biased correctly? Should you just leave the pins 1 and 5 (offset/null) unconnected on IC1? How is the input audio signal biased correctly? Should you just leave the pins 1 and 5 (offset/null) unconnected on IC1?

]]> By: admin http://www.circuitstoday.com/3-band-graphic-equalizer-circuit#comment-2916 admin Tue, 28 Jul 2009 17:02:41 +0000 http://www.circuitstoday.com/?p=292#comment-2916 the job of this capacitor is filtering and noise reduction (capacitor by passes high frequencies, making the DC supply more pure). If the power supply is very far away from the circuit , the supply wires may catch stray noises from the surroundings and this cannot be corrected by the filter and decoupling capacitors inside the power supply circuit.The capacitor connected across the supply lines will by pass these induces noises, making the circuit perform better. Any way this is just an extra precaution and there wont be much problem in the practical performance of the circuit even if you don't use this capacitor. the job of this capacitor is filtering and noise reduction (capacitor by passes high frequencies, making the DC supply more pure). If the power supply is very far away from the circuit , the supply wires may catch stray noises from the surroundings and this cannot be corrected by the filter and decoupling capacitors inside the power supply circuit.The capacitor connected across the supply lines will by pass these induces noises, making the circuit perform better. Any way this is just an extra precaution and there wont be much problem in the practical performance of the circuit even if you don’t use this capacitor.

]]> By: gal http://www.circuitstoday.com/3-band-graphic-equalizer-circuit#comment-2913 gal Mon, 27 Jul 2009 12:25:07 +0000 http://www.circuitstoday.com/?p=292#comment-2913 What is the 10uF/15V capacitor is good for and why it has to be connected only if the power supply is far from the circuit? What is the 10uF/15V capacitor is good for and why it has to be connected only if the power supply is far from the circuit?

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