Baker clamp?

http://www.national.com/whatsnew/files/national_analog_product_selguide.pdf
page 30 tube sound?
note page 31 has what looks to be a passive eq phono circuit

http://www.national.com/pf/LM/LME49810.html

tube sound? I would not think so. PRR had a good post years ago about how complicated a push pull pentode to transformer output stage can get when driven hard then there is the phase inverter section.

R.G. geofex had a softclamp circuit posted in the past that the older VOX solid state amps used IIRC. I seem to remember mystery circuit 2 but I have not found it.

I also seem to remember the older nad 20 watt amps had softclipping circuits.



http://www.onsemi.com/pub/Collateral/AN1577-D.PDF

http://www.analog-rf.com/mixer.shtml

Googling for Baker clamp I found the 2nd link wow is this stuff true?

[quote author="Gus"]
Googling for Baker clamp I found the 2nd link wow is this stuff true?[/quote]

Absolutely fascinating. A few dozen lines into this link I added it to Favorites! I'm still reading....

It is probably all true.

An example I can add: Remington Stone, at the telescope when the first spectral observations were made, suggested the correct interpretation of the moving emission lines in the spectrum of the unusual object SS433, as being doppler-displaced lines of hydrogen and helium. At least in his case the good professors were kind enough to include his name as a co-author on the paper, but Dr. Bruce Margon went on to essentially launch his career by taking credit for the discovery.

Otala's T.I.M. distortion industry was presaged by some remarks in the Radiotron Designer's Handbook of 1952. I don't believe these were ever acknowledged. Admittedly, they are very brief.

Keith O. Johnson got quite secretive after a number of his ideas were ripped off.

I wish the author were a little more careful with spelling, as the odd error tends to imbue the material with a bit of the "crank" vibe. But so it goes.

The academic establishment, like establishments in general, does indeed exert a powerful amount of censorship and is dominated by cronyism.

EDIT: I spent a good deal of additional time reading other parts of the James Long website. It's really quite entertaining and illuminating. See his inventory of reasons businesses fail for example.

Great stuff. I may send him an email fan letter :grin:

I didn't know that diode had a name.

Or why it would ever be omitted on an audio Darlington (non-Darlingtons are tougher).

Doesn't the second stage of the highly advanced '741 opamp have one o these "Baker Clamps"?

Sure doesn't clip like any simple tube amp. I've seen (and built!) much worse; but it's just a neat flat-top. You "can't do that" with tubes... gain is too expensive.

[quote author="Gus"]
http://www.onsemi.com/pub/Collateral/AN1577-D.PDF

http://www.analog-rf.com/mixer.shtml

Googling for Baker clamp I found the 2nd link wow is this stuff true?[/quote]
It is true that most things are apparently invented many times over by different people over various timescales. Usually only one of them ,(not the first or one of those who actually did invent it) ,gets the credit.

This is not surprising.

Ian