Single supply active filter

Maryus17 · 23rd February 2004, 03:10 PM

Does anyone have a schematic for a single supply(12v) 2 way active filter. I want to use an active filter in mycar and i only have 12v. Does anyone know how to feed a dual opamp(tl072, ne5532)
with 12v because i heard it's possible?
Please help me!

moamps · 23rd February 2004, 09:46 PM

Hi,

look here

www-s.ti.com/sc/psheets/sloa058/sloa058.pdf

Regards

Maryus17 · 24th February 2004, 02:23 AM

Thx! I read that and I understood that i can feed an dual opamp from 12v by creating an virtual ground! But doesn't anyone have a schematic for a single supply active(high ang low) filter?
Pls i'm desperate!

moamps · 24th February 2004, 09:43 AM

Hi,

download LR calculator from http://sound.westhost.com/project81.htm , choose your crossover frequency and C, and fill resistors values in filters in circuit below....

Regards

Maryus17 · 24th February 2004, 06:54 PM

Thx very much!

jackinnj · 24th February 2004, 09:59 PM

make sure to read the texas instruments application note on single-supply op-amp stability.

23rd February 2004, 03:10 PM	#1
Maryus17 diyAudio Member Join Date: Feb 2004 Location: Galati, Romania	Single supply active filter Does anyone have a schematic for a single supply(12v) 2 way active filter. I want to use an active filter in mycar and i only have 12v. Does anyone know how to feed a dual opamp(tl072, ne5532) with 12v because i heard it's possible? Please help me!

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23rd February 2004, 09:46 PM	#2
moamps diyAudio Member Join Date: Oct 2002 Location: Croatia	Hi, look here www-s.ti.com/sc/psheets/sloa058/sloa058.pdf Regards

24th February 2004, 02:23 AM	#3
Maryus17 diyAudio Member Join Date: Feb 2004 Location: Galati, Romania	Thx! I read that and I understood that i can feed an dual opamp from 12v by creating an virtual ground! But doesn't anyone have a schematic for a single supply active(high ang low) filter? Pls i'm desperate!

24th February 2004, 06:54 PM	#5
Maryus17 diyAudio Member Join Date: Feb 2004 Location: Galati, Romania	Thx very much!

24th February 2004, 09:59 PM	#6
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	make sure to read the texas instruments application note on single-supply op-amp stability.

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