DIY hand sanitizer/alcohol dispenser, without an Arduino or MCU
In this article, we will build an automatic hand sanitizer dispenser that uses IR sensors to detect the presence of…
Five things to know about prediction and negative-delay filters
How the heck can you build a filter that ‘predicts’ something? Well, it all depends on how high you set…
New MIPI RF front end spec takes 5G beyond mobile
The MIPI Alliance has released version 3.0 of its RF front end (RFFE) specification which will enable more rapid and…
Analyze FIR filters using high-school algebra
This article looks at some fundamental facts about FIR filter responses, using some basic math you might even remember from…
Why the Raspberry Pi 4 should catch your eye
If you’re basing your next system design on the Arm architecture, the Raspberry Pi Foundation’s various boards are an intriguing…
Improving haptic feedback with piezoelectric transducers
Introduction to piezoelectric haptics provides the pros and cons of each and details piezoelectric transducer principles, theory, and modelling along…
Design vs. manufacturing: A failed directional coupler
How would you react if a sample of your design came back with a major change?
Current Sources: Circuitry and Architecture
Now let's look at a two-transistor current source called a Current Mirror. A small sampling of current source circuitry and…