DATASHEET LM3900 PDF

National Semiconductor LM and. LM, Respectively description. These devices consist of four independent, high- gain frequency-compensated Norton. LM description These devices consist of four independent, high gain frequency-compensated Norton operational amplifiers that were designed. LM MC Unit. Supply Voltage. VCC. + + V. Input Current. Iin. mA on the individual data sheets and the Selector Guide. All of the.

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National Semiconductor – datasheet pdf

Roff Well-Known Member Nov 8, The LM is not a normal OP amp. To participate you need to register. Click here to register now. You must log in or register to reply here.

It can not be replaced with a LM op amp. Is an LM a good replacement for an LM? Datasheets, Manuals or Parts. It’s very different than the LM Articles Top Articles Search resources.

That’s what a specific timer of mine does.

Jameco has the LM’s: Neil Groves New Member Nov 7, For a better experience, please enable JavaScript in your browser before proceeding. Datasyeet, I’d be careful about using an AD for a replacement.

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National Semiconductor

The feedback resistor R3 is then: The non-inverting inputs should connect to half the supply voltage filtered with a capacitor to ground. I couldn’t locate one of the latter so relayed my circuit to use an LM instead, well it doesn’t work, i checked my output from the first stage and it sits at 10V although the input is a 4V p-p sine wave from my generator, i am building the circuit here: From what i read, the NTE is a replacement.

I seem to have blown out on at least two things here, i’m gonna scrap that project, build something else i need then come back to it using a different circuit. Back in the 80’s i did.

LM3900 substitute?

I am surprised to see them in circuits today. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.

Hi again, Yeah i remember these from back in the ‘s. Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Replacement Transformer Started by ncag 59 minutes ago Replies: Neil Groves New Member Nov 8, Maybe this was a very old design.

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Media New media New comments Search media. Thus you could look for the presence of line to speaker levels very easily and even filter the hiss. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. By continuing to use this site, you are consenting to our use of cookies.

km3900 It would be possible however to change the design a little to use a more typical op amp. The Q of each bandpass would be a little higher though so you’d have to try it and modify the values slightly if it doesnt seem to work the way you want it to. Potentiometer Questions Started by norbss Yesterday at Thread starter Neil Groves Start date Nov 7, This may not be the ideal setup, but it might still work.