"vintage" data sheets
Mar 31, 2006 at 2:37 PM Post #2 of 8

grasshpr

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Second oldest to the ten commandments
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Apr 1, 2006 at 2:16 AM Post #5 of 8

jcx

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Quote:

Originally Posted by rickcr42
page 31

THAT is how you do a line driver
wink.gif



???

[ not everyone needs a +16 dB boost starting at 1.6 KHz ]
 
Apr 1, 2006 at 4:22 PM Post #7 of 8

jcx

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even allowing for that it seems sub-optimal for audio

I would think pointing to Walt's "mixed feedback" transformer drivers in the audio amplifiers section (6.69-6.77) of his Op Amp Applications book would be more interesting, the feedback derived negative output impedance of the driver causes cancelation of the the real component of the transformer drive current which gives huge distortion reduction at low frequencies - allowing much cheaper transformers to compete

http://www.analog.com/library/analog..._handbook.html - section 6
 
Apr 1, 2006 at 4:35 PM Post #8 of 8

rickcr42

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Quote:

I would think pointing to Walt's "mixed feedback" transformer drivers in the audio amplifiers section (6.69-6.77) of his Op Amp Applications book would be more interesting


think whatever you like,I would rather build and use.A fully balanced driver with a balanced trafos output kicks a*s as a line driver.
 

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