amplifier circuit help

Jul 17, 2004 6 Replies

Hi all, Can anyone point me in the direction of an amplifier circuit that will take DC 0-60 mv and turn it into DC 0-6volts. I intend to buy components and solder it up myself



Any info will be good even if it just clues on what I need. I've googled and found millions and I just don't know which one of the many I can use for this purpose.



I'm in the UK if that makes any difference.



Thanks for any info Ben



You need a basic operational amplifier. The LM741 IC will work. Using the feedback circuit, choose the resistance to set the gain to be 100. John

I second the 741 idea and you can get 4 in a DIP chip as an LM324. Either way this is a buck (~Euro) or less, mail order and 3 bucks in a bubble pack at a retailer. Certainly cheap enough to let you blow up a few experimenting, but I have yet to kill one.

Does anyone even make an "LM741" any more?

Bill

Ive read the relevant data sheets and they look good, the lm324 is a great idea as I need 4 anyway.

I`ll let you know how many I blow trying ;-)

Thanks alot Ben

Sure.

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$0.18 each (in quantities of 1k+...National is a manufacturer)

I'm amazed that they still make the 741 - it's been around forever. I should have checked before speculating on its demise.

National has a very nice Web site - I still have some early '80s-vintage National databooks.

Bill

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