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:

Voltlog #77 – InTheMail

Here is a list with the items shown in this video:

  • USB Drive Spy Camera
  • 35W Radar Motion Sensor Switch
  • 4 Channel Wireless Remote Control Switch
  • 64 LED 20W 2835 Horizontal Led Light
  • 64 LED 60W E27 5730 Light Bulb
  • 21 LED 15W E27 Globe Light Bulb
  • 21 LED 15W E27 Energy Saving Light Bulb

Links for all of these will be in the video description on youtube.

Voltlog #76 – InTheMail

This what happens when I left myself on a shopping spree, you get a month’s worth of InTheMail episodes. So let’s get started on the 4th episode in a row showing the stuff I get from China.

Here is a list with the items shown in this video:

  • Brushless Blower Fan 12V 5015S
  • Brushless Blower Fan 5V 6015S
  • Cooling Fan 5V 2 Pin 50x50x10mm
  • Fan Grill Guard 50mm
  • Aluminium Heatsink 150x60x25mm
  • TO-220 Aluminum Heatsink 34x12x30mm
  • 100W Wire Wound Aluminium Housing Resistor
  • 200x175x70mm Plastic Enclosure For Instrument
  • 170x130x75mm Metal Enclosure For Instrument
  • Rubber Feet Self Adhesive 15mm
  • LM2596 DC-DC Step-Down Converter Module
  • XL6009 Buck-Boost DC-DC Converter
  • 10A BMS 3S Battery Protection Module
  • Zener Diode Assortment – Through Hole
  • Zener Diode Assortment – SMD
  • PT4115 LED Driver IC

Links for all of the items will be in the video description on youtube.