Voltlog #148 – Affordable Pocket Multimeter Shootout

In this episode we are going to be taking a look at the affordable pocket multimeter market, I’ve god 4 models which you can get for under $20 and I’m going to review these to see which one is best.

If you just want to skip to the results checkout this spreadsheet on google docs.

Here are links to where you can buy these pocket multimeters:

Here are the pictures from the teardown of these meters:

Voltlog #131 – Measuring The Efficiency Of The Ruideng Kis3r33S DC-DC Converter

You might remember this small module from the previous InTheMail, this is the Ruideng dc-dc converter with a claimed efficiency of 95%. Now a figure of 95% efficiency is not unheard of these days, many dc-dc converters can achieve this with proper circuit design.

This particular model uses the MP2307 converter chip manufactured by Monolithic Power and if we take a look at their datasheet we can immediately see where they got the 95% efficiency figure they advertise.

If you own fancy equipment like a source/measure unit than one instrument can do all the measurements and data log the results as well but a source/measure is out of our budget so we will be using multimeters for this test.

Here are links where you can find the equipment used in this video: