+/- 5 vdc signal to 0-10 vdc signal

It was never brilliant - the LM107 did the same job a whole lot better. And unfortunately, people who should know better are still designing it in.

Prepare to be surprised. Try looking in the Farnell catalogue - both parts are available in several packages from several sources. I imagine that this is mostly to supply the legacy market, but people do have a tendency to use the part that worked last time, even if it is pretty much obsolete.

-- Bill Sloman, Nijmegen

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to

This claim happens to be wrong; you should know that it is wrong, but you may just be deluded.

As I've already explained, the phrase "dumb newbie" is an idiom, which is to say the meaning of these two words taken together isn't what it would be if it wasn't an idiom. If I'd left out the "dumb" component, I'd have failed to catch the RTFM component in "dumb newbie". A "dumb newbie" differs from a "newbie" in not appreciating that there is a manual than could be read - there's no suggestion that the "dumb newbie" is stupid, merely ignorant.

This pretty much describes your own behaviour

Everybody makes errors of action. Professional proof readers catch better than 90% of typos, while the rest of us don't do better than

-- Bill Sloman, Nijmegen

I have to grasp every opportunity I get. There are so few areas where I've got somethig to be modest about.

-- Bill Sloman, Krypton (but in Nijmegen at the moment)

After all this noise, Craig never checked back in to say whether he got what he was looking for.

--- / / Here's one:

Calling him a coward are you John? That really is a gratuitous insult ...

A more likely - and less insulting - hypothesis is that you gave him all the answer he though he needed, and he's been busy since then trying to get his hands on an LM318.

-- Bill Sloman, Nijmegen

The LM107 like the OP07 came out 10 years later. Thus are not properly comparable (more so back then). And NS obsoleted the LM107 in 1996. Reproduction parts are not the original design for either one (and usually have better performance).

Reproduction parts, not the original designs.

And maybe OP is just kicking back reading this from google groups and laughing his arse off.

e:

The LM101 (the LM107 without internal compensation) came out in 1967. The uA741 came out in May 1968 and the LM101A and the LM107 in December 1968.

The OP-07 came out seven years later. It's major advantages were that the off-set voltage was trimmed at manufacture (by zenner zapping) and the input offset currents were actively cancelled - very handy in precision circuits. For a lot of applications swapping it in let you dump a trimming potentiometer or two.

But they meet the original specifications - which tended to leave out important stuff like input noise voltage (the original 741's were horrible) and input capacitance. I've got a nasty suspicion that many modern "741"s and the like, are more modern parts that failed to meet the meet their more comprehensive modern specifications and get packaged and shipped out under the older, less closely specified, part numbers.

Who cares. And you can't rely on it. Around 1987 I significantly improved the performance of the Metals Research gallium arsenide crystal puller by taking out a 741 and replacing it with an OP-07. The

By 1987, whatever was being sold in the 741 package should not have exhibited pop-corn noise, but the Cambridge Instuments buyers had a genius for finding cheap and nasty components (Metals Research was a wholly owned subsidiary of Cambrdige Instruments at the time).

-- Bill Sloman, Nijmegen

I challenge your data, i was buying surplus 741s in 1965. Provide backup data to be more credible. Then again, i was living in what was to become "silicon valley".

rote:

You haven't challenged it, you've merely said that it doesn't fit with what you think you remember. If you could point to some evidence that supports your memories from forty years ago, then you could challenge it. I don't like your chances. Here's another web reference.

It too has the LM101 coming on the market before the 741 and and the LM107 becoming available less than a year after the 741. I was still using the uA709 in1968 - but that was in Australia.

-- Bill Sloman, Nijmegen

If you insist on blowing off others direct experience you should know well what the result will be.

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If you think you were buying surplus 741's in 1965, when Fairchild apparently introduced the device in May 1968, it is more than likely that you have got your dates wrong. I can only identify the year in which I was buying uA709s because I used them in my Ph.D. project, and I know that I submitted the thesis in December 1969 and could to work back from that to when I bought the 709s. It is easy enough to make a mistake in that sort of deduction - I've done it often enough, which is why I check my memories against Google when I can.

The various published histories of analog electronics will be based on documentary evidence, and should be correspondingly more reliable.

-- Bill Sloman, Nijmegen