In op-amp do not_symmetrical power supply cause distortion? - diyAudio
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Old 9th October 2008, 10:34 AM   #1
ygg-it is offline ygg-it  Italy
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Default In op-amp do not_symmetrical power supply cause distortion?

In an Opamp if I have + 15v in one rail and -14v in the other, this may cause distortion (even at low level) ?

(I'm using lm 317 and 337)
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Old 9th October 2008, 10:54 AM   #2
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I don't think so but I may be wrong.
Of course, you'll get non-symmetrical clipping.
I have used non-symmetrical bipolar supplies on some of my video distribution amplifier designs when I don't have quite enough voltage from the PSU.
In that case, I had +10 volts and - 5 volts on the rails.
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Old 9th October 2008, 11:57 AM   #3
ygg-it is offline ygg-it  Italy
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So, a part of clipping, there is no sense to put a multitrimmer on one leg of the supply regulator to get the same output voltage equal to the other?
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Old 9th October 2008, 12:11 PM   #4
AndrewT is offline AndrewT  Scotland
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easier to use a parallel resistor to adjust the output voltage.
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