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FFTs and oscilloscopes: A practical guide

The FFT (Fast Fourier Transform) first appeared when microprocessors entered commercial design in the 1970s. Today almost every oscilloscope from high-priced laboratory models to the lowest-priced hobby models offer FFT analysis. The FFT is a powerful tool, but using it effectively requires some study. I'll show you how to set up and use the FFT effectively. We’ll skip the technical description of the FFT, ...

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Lightweight Body Heat – Electricity Converter

Researchers at North Carolina State University have developed a new design for harvesting body heat and converting it into electricity for use in wearable electronics. The experimental prototypes are lightweight, conform to the shape of the body, and can generate far more electricity than previous lightweight heat harvesting technologies. [caption id="attachment_36188" align="aligncenter" width="400"] Study ...

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LTM2889 – Isolated CAN FD µModule Transceiver and Power

Features Isolated 4Mbps CAN FD Transceiver 2500VRMS for 1 Minute Per UL1577 Isolated DC Power: 5V (Adjustable to 3.3V) Up to 150mA Available Isolated Power Output 3.3V or 5V Input Supply Voltage Options UL-CSA Recognized File #E151738 No External Components Required High Bus Fault Voltage Tolerance: ±60V Low Power OFF Mode: <1µA Typical High Common Mode Transient Immunity: 30kV/µs Variable Slew Rate Driv ...

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Tibbo Project System-based Aircon Controller Application

The app allows you to manage traditional air conditioners that are controlled through infrared remotes. Designed for the office environment, the app relies on the ambient brightness (measured by Tibbit #28) to determine whether the aircon should be running or not. In the office setting, no lights = no people = no need for the aircon to work. Air conditioning is a consumptive business while air conditioners ...

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8 Channel RS485 Relay Board

This project helps you control 8 relays using RS485 link with the help of a PC. This kit can effectively convert a standard PC to a powerful   PLC ( programmable logic controller ). At the PC end , you will need to use our RS232 to RS485 Interface – C020 or any other suitable RS232 to RS485 Converter. The project can offer a low-cost serial relay contact interface, easy to use with Visual Basic, Basic, C, L ...

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Dual input, 2.5A step-down DC/DC achieves 95% efficiency

Features Seamless, Automatic Transition Between Two Input Power Sources Wide Input Voltage Range: 2.4V to 42V Wide Output Voltage Range: 0.818V to VIN Up to 2.5A Continuous Output Current Pin Selectable Priority and Ideal Diode-OR Modes Burst Mode® Operation, IQ = 2μA 95% Efficiency at 1A, VIN = 12V, VOUT = 5V 1μA Current in Shutdown Programmable Input UVLO Thresholds Input Valid, Priority Channel and PGOOD ...

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Lithium-ion battery fires: 7 solutions for improved safety

I would feel so much safer on my next flight from Phoenix to Silicon Valley if I knew that there were safeguards in place inside passengers’ smartphones that could prevent fire and explosion from such design decisions like a company packing 10 pounds of Lithium-ion battery into a 5 pound compartment or a smartphone owner buying a lower cost, after-market battery replacing the original battery in their phone ...

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