TL082 Stereo Amplifier

fraser80 · 10th February 2012, 10:33 PM

I have found an TL082 OP Amp and was wondering if I could put it to use as a stereo amplifier. Does anyone know if this is even possible, and if so, where I could find a schematic showing me how to do so?

nigelwright7557 · 10th February 2012, 10:55 PM

It is an op amp and more suited to a pre amplifier.

It might drive some high impedance headphones at a modest level at a push.

mikje · 10th February 2012, 10:58 PM

If you do a Google search for it, you'll find a lot of info.
Mike

sgrossklass · 11th February 2012, 10:03 PM

Quote:

Originally Posted by nigelwright7557

It might drive some high impedance headphones at a modest level at a push.

That seems about right. The near-identical TL072s are measurably unhappy with anything from 2k2 down, but still do a decent job driving 600 ohm headphones. They're a little noisy, too, and I do think they suffer from latch-up when the input gets near negative supply. At least power drain is quite low.

It's a very old, very inexpensive chip. They were used by the bucketload in the 1980s, but are well past their prime now.

! · 11th February 2012, 11:13 PM

No, not much good to build an amp out of it, at least not anything useful because whatever your source is will be able to drive speakers as well as a TL082 in between source and load could, UNLESS you put a higher current capable buffer after it, which is what you more or less end up with by just buying and using a proper stereo amp chip instead.

Use chips with MORE current capability than you're likely to need, rather than less.

Elvee · 12th February 2012, 07:28 AM

Quote:

Originally Posted by fraser80

I have found an TL082 OP Amp and was wondering if I could put it to use as a stereo amplifier. Does anyone know if this is even possible, and if so, where I could find a schematic showing me how to do so?

You probably also have one or two voltage regulators around, here is a fun way to put all that to good use:
SE class A regulator-chip-amp madness

zarra68 · 13th March 2012, 04:56 PM

Have you ideea for the TL083,made by east-germany in 80',is not so much data in web.I have more then 8 pieces,is the same with TL072!?Where i buy,the seller says is for the crossover!?

10th February 2012, 10:33 PM	#1
fraser80 diyAudio Member Join Date: Feb 2012 Location: Orlando, Florida	TL082 Stereo Amplifier I have found an TL082 OP Amp and was wondering if I could put it to use as a stereo amplifier. Does anyone know if this is even possible, and if so, where I could find a schematic showing me how to do so?

10th February 2012, 10:55 PM	#2
nigelwright7557 diyAudio Member Join Date: Apr 2008 Location: Carlisle, England	It is an op amp and more suited to a pre amplifier. It might drive some high impedance headphones at a modest level at a push. __________________ http://www.murtonpikesystems.co.uk PCBCAD40 pcb design software.

10th February 2012, 10:58 PM	#3
mikje Soakin' up the Sound! diyAudio Member Join Date: Feb 2008 Location: Bismarck, ND	If you do a Google search for it, you'll find a lot of info. Mike __________________ Marantz PM8003 amp, HRT Music Streamer II DAC, Squeezebox Touch, DIY Krystals

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11th February 2012, 11:13 PM	#5
! diyAudio Member Join Date: Jun 2005 Location: Midwest	No, not much good to build an amp out of it, at least not anything useful because whatever your source is will be able to drive speakers as well as a TL082 in between source and load could, UNLESS you put a higher current capable buffer after it, which is what you more or less end up with by just buying and using a proper stereo amp chip instead. Use chips with MORE current capability than you're likely to need, rather than less.

13th March 2012, 04:56 PM	#7
zarra68 diyAudio Member Join Date: Jun 2011	Have you ideea for the TL083,made by east-germany in 80',is not so much data in web.I have more then 8 pieces,is the same with TL072!?Where i buy,the seller says is for the crossover!?

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