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Getting Distortion Down

Posted 1st February 2017 at 08:59 AM by SyncTronX
Updated 1st February 2017 at 07:25 PM by SyncTronX

Over in the Low-distrotion, Audio-range,
Oscillator thread (LINK) some posts
about getting lower distortion before taking
the measurement of a DUT (Device Under Test).

Our own RNMarsh posted some good results
running his Panasonic through a miniDSP
box configured as a Low Pass Filter.

He had good results. So I thought and told him
so, and suggested he might get better results doing a band pass filter.

So instead of doing my diode homework for
my Solid State Devices class, I thought I'd
better check, that is put up for shut up.

So, I did and here is what I discovered:

Before filtering:
Click the image to open in full size.


Then here is using a 900Hz bandpass filter:

Click the image to open in full size.


Yep, not bad and that is better than what I expected.
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