Basic OPA134 amplifier

[amirmk]

Hello,
I got a couple of OPA134 OPamps, and I would like to use them to build a simple amplifier. This is my first DIY project.
Can you please show me schemes I can use?

Thank you very much.

[PMA]

:

[amirmk]

Thank you very much!

I got couple of questions:
1. What is an audio buffer?
2. How can I turn positive to negative voltage? (48V to -/+15V)
3. C6, What does 2u2 stands for?

[00940]

http://headwize.com/projects/showfil...=cmoy2_prj.htm

very basic use of opa134

[sonicmook56]

2u2 means 2.2u. put the unit of mesurement where the dot goes. This helps confusion when schematics get photo copied. you can get confused and put a 22u cap in insted.

[costiss]

are you intending this for a preamplifier? if yes, use a two stages with opa134 in noninverting topology with gain about 2.1 (1k +1k1), with the potensiometer between them. dont use any caps on the signal, just built a hefty power supply (like 2x4700u + 50 VA / ch + 317/337)... results can be surprising...this is what im using.. really good..dynamics, clarity and huge soundstage (627 lately).. to convert a single supply to dual you could use sth like a buf634 with a voltage divider to generate the 0V potential.. where is the intended 48v from? Using the supply of a power amp isnt adviced, and this will create problems with ground interfacing, too...