RE: digital meter volatile reading, when I try to measure the AC ripples in smps

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In Reply to: digital meter volatile reading, when I try to measure the AC ripples in smps posted by wlee on November 22, 2014 at 13:38:50:

What meter and what do you mean by go crazy?

While a multimeter is fine for measuring ripple on a linear power supply (where ripple would be 60Hz or 120Hz) it is the wrong tool for measuring ripple on a switching power supply.

Most switching power supplies switch in the megahertz range and their ripple would be at or twice the switching frequency.

You need to use an oscilloscope to measure this.

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Follow Ups Full Thread

Topic - digital meter volatile reading, when I try to measure the AC ripples in smps - wlee 13:38:50 11/22/14 (3)

RE: digital meter volatile reading, when I try to measure the AC ripples in smps - fmak 09:03:52 11/23/14 (0)

RE: digital meter volatile reading, when I try to measure the AC ripples in smps - Tweekeng 16:59:24 11/22/14 (1)

RE: digital meter volatile reading, when I try to measure the AC ripples in smps - wlee 21:06:44 11/22/14 (0)

Follow Ups

RE: digital meter volatile reading, when I try to measure the AC ripples in smps - Tweekeng 16:59:24 11/22/14 (1)

RE: digital meter volatile reading, when I try to measure the AC ripples in smps - wlee 21:06:44 11/22/14 (0)

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