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The Aim-TTi QPX750SP is not a typical bench power supply.  A typical bench power supply may have two or three output channels capable of delivering 0 to about 30 VDC at up to say 3 A.  For example, my Keysight E36313A is a typical bench supply with three programmable channels.  It has no trouble delivering one channel of 6V at 10A, and two channels of up to 25 V at 2A.  That sort of power is fine for powering many common DC circuits including most small contemporary digital a ...
I am thrilled to have been selected to  roadtest the BT817 chip and while it has only been 4 days since I received it, I wanted to share some information early on as it may help other people working with the evaluation board. Once I have worked for a longer time with it I will of course submit a thorough review.   In the package we received was the ME817EV evaluation board and a 7 inches display from Riverdi, labeled RiTFT-70-CAP-UX on the packing list.     Plugging the ...
Solar Cell Characterization (Workflow Comparison) Solar or photovoltaic cells are devices that convert light energy into electric energy through the photovoltaic effect. Optimizing power conversion from solar cells is not trivial because of the shape of the I/V curve:       Parameters that define the I/V curve of a solar cell for a defined light condition are the short circuit current (Isc), the open circuit voltage (Voc) and the maximum power (Pmax), which is the power at Vma ...
Introduction  A Peltier device is a solid-state heat pump that transfers heat from one side to the other. The heat transfer simultaneously reduces the temperature at one side of the device and increases it at the other side, generating in this way a temperature gradient across the sides of the device.   Peltier cooling is not efficient compared to vapor-compression refrigeration, but Peltier devices have the advantage of being small, having a long life, no moving parts, making no noi ...
Introduction  DC-DC converters are devices that convert a source at one DC voltage into another. They can be classified in many ways, such as between linear and switching, step-up and step-down, based on their topology, and so on. Depending on the application one may prioritize different figures of merit. For instance, for IoT applications the efficiency is one of the most critical figures, as it affects the life of the battery, while for other applications, the quality of the output could ...
Introduction  Properly optimizing energy consumption of battery powered microcontrollers is fundamental to extend the battery life. Questions like when it is better to keep the device idling and when to enter light- or deep-sleep cannot be answered without measuring the power consumption during those sleep modes and the time and energy overhead of entering those modes. Likewise similar measurements are required to evaluate when it is better to stay connected to the WiFi, and when to discon ...
Greetings!   I wanted to share with you a fun opportunity that any roadtester who is also a maker and project builder may enjoy.   Our agency has started a series called "Movers and Shakers in the Maker Space."  The series is broadcasted on a podcast called Fish Fry with Amelia Dalton (EEJournal).   Here's a link to a recent podcast that featured element14's very own Phil Hutchinson ( e14phil  ):   https://www.eejournal.com/fish_fry/better-than-a-human-driver-tr ...
This page is a collection of snippets for the RoadTest of the MPM54304 <link to final review>   In this road test I aim to answer the following 2 questions: (1) How is the MPM54304 programed the first time? (2) How well do the software tools provided by MPS aid in the design, integration, and validation of an electronically programmable power solution?   For the purposes of RoadTesting the MPM54304, I will attempt to employ the programable DCDC converter into a multi-rail &ldqu ...

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