[SI-LIST] Re: noise seen from oscilloscope
- From: steve weir <weirsi@xxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Sat, 06 Apr 2013 21:59:33 -0700
This is common mode noise between your circuit and the oscilloscope
internal common.
Steve.
On 4/6/2013 9:07 PM, XiaoLiang Tan wrote:
> Dear Experts,
> When I use oscilloscope to measure the output of the linear
> regulator, it gives a peak (more than 100 mV) for the DC voltage output at
> a frequency in tens of Hz range.
> When I short the probe and gnd (probe gnd) of the oscilloscope, it
> also shows a peak voltage with a low frequency.
> So may I know that what causes this problem? Thanks.
>
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