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WEBEDN is a website for engineers to find the latest articles, magazines, tools, and blogs on electronics design and technology. Learn about post-quantum cryptography, solar power, AI, and more topics from experts and peers.
Setup and Hold Time Basics - EDN
WEBApr 19, 2012 · Learn why setup and hold time are important for flip-flops and how they are affected by inverters, transmission gates, and combinational logic. See examples, diagrams, and explanations of positive, zero, and negative hold time.
USB Type-C PD 3.0 Specification, Charging and Design - EDN
WEBJun 25, 2021 · Learn how USB Type-C power delivery (PD) 3.0 with programmable power supply (PPS) can optimize battery charging for portable devices. Compare PD 2.0 and PD 3.0 specifications and see an example of a USB Type-C PPS power adapter design.
Setup and Hold Time Equations and Formulas - EDN
WEBAug 10, 2012 · Learn what setup time and hold time are, how they affect the clock-to-Q delay and the operating frequency of digital circuits, and how to calculate them using equations and examples. See the impact of skew, combinational delay and input window on setup and hold violations.
Eye Diagram Basics: Reading, Analyzing and Applying
WEBDec 16, 2011 · Learn how to use an oscilloscope to create an eye diagram and evaluate signal integrity in high-speed digital transmissions. An eye diagram shows the timing errors, jitter, and distortion of a signal, and can help you locate the source of problems.
Audio levels, dBu, dBV, and the gang: What you need to know
WEBApr 18, 2017 · Learn how decibels are used in audio interfaces and equipment, and the difference between unbalanced (-10dBV) and balanced (+4dBu) standards. Find out how to calculate voltage levels, headroom, and signal swings in analog and digital audio.
Equalization Techniques: CTLE, DFE, FFE, and Crosstalk - EDN
WEBOct 21, 2015 · Learn how FFE (transmitter feed-forward equalization) works with CTLE, DFE, and crosstalk to optimize equalization for high speed serial channels. See examples of frequency and pulse responses, and how they change for PAM4 signaling.
A guide to using FETs for voltage controlled circuits, Part 1
WEBOct 13, 2017 · Learn how to use FETs as voltage controlled resistors, amplifiers, mixers, phase shifters, and filters in audio applications. See examples of current-voltage curves, attenuator circuits, and push-pull configurations.
Polaroid introduces the instant camera, February 21, 1947
WEBFeb 21, 2019 · The Polaroid Land Camera Model 95 was the first instant camera to go on sale in 1948, after Edwin Land demonstrated the technology in 1947. The camera used positive paper and pods of chemicals to produce black-and-white photos in a minute.
Tesla gives 1st public demonstration of radio, March 1, 1893
WEBMar 1, 2019 · Nikola Tesla presented the principles of radio communication in St. Louis on March 1, 1893, using magnetic receivers and electric oscillations. His work was later invalidated by Marconi patents in the US Supreme Court.