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UPDATE Oct 1, 2021: I have concluded launching all the roadtests I can prior to our platform migration. No new roadtests will be launch until mid to late November.     Greetings.   During the month of November, element14 is migrating to a new platform. I have been told during this migration period that I cannot have any roadtests in enrollment.   Since roadtest enrollments last 1 month, I will not be launching any new roadtests after October 1st.   In the next two d ...
My RoadTest of the MAX77714 EVK just keeps getting more bizarre. Both of the push button switches on my EVK fail to operate. A few weeks ago I was briefly experimenting with the soft power button features and couldn't get it work. Turns out, it is because the push buttons are defective. I have recently discovered this trying to document my failing 32K crystal oscillator. I wanted to reset the PMIC to confirm my memory of the sequence of events that transpired trying to get the 32K oscillator to ...
I welcome you to this part of my RoadTest review of Bridgetek BT817 evaluation board. In this part I will briefly describe one of my experiments which I have done for gaining experiences with BT817 chip and evaluation board. In this blog post I will describe how to draw basic elements, how to draw more complicated elements using stencil mask, and how to setup touch controller with support for generating interrupts. My opinions and some notes about chip and evaluation board (main part of review) ...
1. Miscellaneous Features 2. Control over Ethernet This is the 4th blog post of my RoadTest review of the AIM-TTI QPX750SP power supply: AIM-TTI Bench Power Supply   Previous blog posts: AIM-TTI QPX750SP RoadTest | A Non-Conventional Power Supply Review AIM-TTI QPX750SP RoadTest | Passive Load Experiments AIM-TTI QPX750SP RoadTest | Dynamic Load Behavior & Protections   In this blog post I will take a look at some of the miscellaneous features the AIM-TTI QPX750SP lab powe ...
1. Introducution 2. Dynamic Load Setup 3. Load Regulation Behavior 4. Current Limiting Behavior 5. Short Circuit Protection 6. Conclusions This is the third blog post of my RoadTest review of the AIM-TTI QPX750SP power supply: AIM-TTI Bench Power Supply   Previous blog posts: AIM-TTI QPX750SP RoadTest | A Non-Conventional Power Supply Review AIM-TTI QPX750SP RoadTest | Passive Load Experiments   It the last blog post, we compared a bunch of different power suppl ...
Several weeks ago, I asked for your help in selecting a motor of a roadtest. Here's the blog: Seeking Assistance in Selecting a Motor for a Single-Phase Inverter Roadtest   With your input and help, I went back to the sponsor and we selected a motor.   So, here is what each roadtester will receive:   one Fan motor https://www.yoycart.com/Product/567509041351/  (The sponsor selected this)   one RDK-872 - Reference Design Kit for BridgeSwitch (70 W Single-Phase Inver ...
The need for power supply protection systems A robust bench power supply like the QPX750SP with a wider than normal output power range enables test, development, and troubleshooting of systems that would overload, shut down, or damage standard bench power supplies.  The QPX750SP can easily deliver 50 A of current at 12 VDC (600 W of DC power) and up to 9.4 A at a caution worthy 80 VDC.  With a wider range of operational capability (750 W maximum output power) comes a wider ranger of h ...
1. Introduction 2. Resistive Loads Aim-TTS QPX750SP RD Tech DPH5005 ATX Power Supply LTE 12V Power Brick Mean Well 12V Power Adapter Mean Well (NXP) 12V Power Brick IBM 16V Laptop Charger ASUS 19V Laptop Charger LiteON 19V Power Brick ChipKit UNO 32 Arduino MKRFOX 1200 LiPo Battery 3. Inductive Loads 4. Capacitive Loads 5. Conclusions This is the second blog post of my RoadTest review of the AIM-TTI QPX750SP power supply: AIM-T ...
Introduction  The modulation capability of the instrument virtually turns the instrument into a voltage amplifier with gains of 0.5, 1 or 2. As previously shown in the regulation tests, during modulation the instrument samples the input signal at 1 kHz. To show the modulation feature applied to a more realistic application I decided to use it to build a temperature control system     Setup  The system was made of a beaker filled with ~300 ml of water whose temperature was r ...
Introduction  To explore the regulation capabilities of the SMU I performed a few tests to see how it behaved in voltage priority mode (VPM), current priority mode (CPM), and in the (voltage) modulation mode. Let's briefly explain what all this modes are. VPM is the standard operation mode of power supplies, in this mode, the SMU starts in constant voltage (CV) (i.e., the SMU control loop regulates the voltage), so there is very little voltage overshoot. The SMU stays in CV unless the curr ...
I'm getting ready to launch a roadtest on a 70 W Single-Phase Inverter Using BridgeSwitch for Fan Application. I was sent the board, but I wanted to send a motor with the inverter board.   I'd like to get some help in selected a compatible motor. Here's the info on the board, as well as some relevant links.   Here are some key features:   • BridgeSwitch – High-voltage half-bridge motor driver • Integrated 600 V FREDFETs with ultra-soft, fast recovery diodes ...
1. Motivation 2. Power Supplies 3. Dummy Loads 4. Test Equipment 5. Test Plan   The AIM-TTI QPX750SP is a powerful bench power supply, capable of providing a maximum of 750W DC power within a wide voltage range of 0-80 V. It is a professional instrument I got for testing as part of the AIM-TTI Bench Power Supply RoadTest. This blog post is the 1st one from a series of blog posts, in which I will try to thoroughly evaluate the unit.   With this occasion, I would ...

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