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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Potentiometer Questions Started by norbss Yesterday at You must log in or register to reply here. Hi, I’d be careful about using an AD for a replacement.

It’s very different than datasehet LM Media New media New comments Search media. Hi again, Yeah i remember these from back in the ‘s.

From the LM data sheet it looks like the three amps with two caps dahasheet are just bandpass filters. Maybe this was a very old design. Click here to register now.

Thus you could look for the presence of line to speaker levels very easily and even filter the hiss. This may not be the ideal setup, but it might still work. From what i read, the NTE is a replacement. We can call the input resistor R1 and the resistor to ground R2 and the feedback resistor R3. To lm33900 you need to register.


(Datasheet) LM pdf – (LM / LM / LM) Quad Amplifiers (1-page)

For one thing, the input bias would be different. I datasjeet 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. The LM is a high speed version. It would be possible however to change the design a little to use dafasheet more typical op amp.

Welcome to our site! The feedback resistor R3 is then: Forums New posts Search forums. It operates on the difference in input current rather than the difference in input voltages.

Back in the 80’s i did. Is an LM a good replacement for an LM?

National Semiconductor

Redesigning them for other op amps probably wouldnt be much of a problem really. Articles Top Articles Search resources.

One of the cool things about the LM is that the input voltage can exceed the supply rails without a lot of fancy stuff. Roff Well-Known Member Nov 8, Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at For a better experience, please enable JavaScript in your browser before proceeding. It can not be replaced with a LM op amp.

The non-inverting inputs should connect to half the supply voltage filtered with a capacitor to ground. By continuing to use this site, you are consenting to our use of cookies. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.


Replacement Transformer Started by ncag 38 minutes ago Replies: Jameco has the LM’s: Hi, The LM was a very different kind of op amp. The LM is not a normal OP amp. I am surprised to see them in circuits today. Neil Groves New Member Nov 7, 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: 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 dagasheet.

Neil Dztasheet New Member Nov 8, That’s what a specific timer of mine does. Datasheets, Manuals or Parts. The circuit uses a single polarity supply so grounding the non-inverting input of the opamps would cause their outputs to be grounded and they would work like rectifiers.

Thread starter Neil Groves Start date Nov 7, I probably have few AD’s around, but i dont think i have any LM’s around anymore.