EDN

Tune 555 frequency over 4 decades

Using the LMC555 CMOS analog timer to set a frequency from < 10Hz to > 100kHz, giving this design a strong dynamic range but ...
Hackaday

555 timer

Over on YouTube [Andrew Neal] has a Function Generator Build for Beginners. As beginner videos go this one is fairly comprehensive. [Andrew] shows us how to build a square-wave generator on a ...
Hackaday

555-Based Square-Wave And Triangle-Wave Function Generator Build For Beginners

Over on YouTube [Andrew Neal] has a Function Generator Build for Beginners. As beginner videos go this one is fairly ...
BMJ

Prevalence and frequency of menstrual cycle symptoms are associated with availability to train and compete: a study of 6812 exercising women recruited using the Strava exercise app

Correspondence to Dr Georgie Bruinvels, Faculty of Sport, Health and Applied Science, St Mary's University Twickenham, Twickenham, London, UK; georgie.bruinvels{at}orreco.com Objectives The menstrual ...
BBC

Short division using written methods

When you are doing division, it's helpful to use a written method. This can be especially useful if the numbers get too big to calculate in your head. If the number you are dividing by (this is called ...
IEEE

A 37 GHz Wide-Band Programmable Divide-by-N Frequency Divider for Millimeter-Wave Silicon-Based Phase-Locked Loop Frequency Synthesizers

Abstract: A 37 GHz wide-band programmable divide-by-N frequency divider (FD) composed of a divide-by-2 divider (acting as the first stage) and a divider with a division ratio range of 273–330 (acting ...
IEEE

Beampattern Design using Riemannian Manifold for Frequency Diverse Array considering Jammers

Abstract: This paper investigates a two-dimensional range-angle beampattern synthesis method for jammer suppression using a frequency diverse array (FDA) multiple-input multiple-output (MIMO) ...