Elegant Circuits: Simple Chaotic Oscillators (Book review)

Chaos Theory has been an important pursuit of physicists and mathematicians since it was brought to the forefront as a distinct phenomenon in the early 1960s. This early exposition got the attention of the scientific community by—in the best tradition of the scientific method—displaying experimental results that did not comport with theory. Mathematicians had various … Read more

Some Aspects of AESA Power Supply Management

This article considers several features of AESA power supply systems that are useful for engineers specialized in the development of AESAs and their power supply management. There are many applications, which utilize pulse-type load for power supply units (PSU). Such loads, for example, are transceivers of radars, pulsed amplifiers, high efficiency processor units, ozone generators, … Read more

Don’t rely on the automatic settings of your SPICE simulator

A lot of things happen automatically all around us. Even our own breathing and heart rate are automatic. Still, trusting in the automatic can be a mistake sometimes and the following is a simple case in point. That SPICE simulator you’ve been using is one pretty spiffy little tool, isn’t it? All kinds of analytic … Read more

Simple GPS Disciplined 10MHz Reference uses Dual PWMs

I was recently working on an experiment for a new design and was using a function generator. Although new function generators have pretty good frequency tolerance specs, I needed something with more accuracy and precision. The way to get more accuracy in frequency generators, arbitrary waveform generators, and frequency counters is to use the 10 … Read more

Creating smart brightness-controlled lamp with a motion sensor

This article aims to demonstrate the design of a smart brightness-controlled lamp with a motion sensor using a programmable mixed-signal matrix with four outputs, operating voltage up to 13.2 V, and 2 A current per output. The system is created using high voltage macrocells and other internal and external components within the chip to interact … Read more

Floating Measurements with Fast Common Modes and Isolated Probes

Current modern power electronics systems rely on stacked topologies which inevitably lead to the need to measure signals that ride on fast common-mode transients. Fiber isolated probes allow the measurement of such signals but, still, some pitfalls do exist. Traditionally, engineers have faced the need to measure ground-referenced signals. The principles to increase signal integrity … Read more

Oscillators: How to generate a precise clock source

In our modern era, digital logic has become the core of all the electronics circuits either in the form of an FPGA, microcontroller, microprocessor, or discreet logic. Digital systems use many components that must be interconnected to perform the required functions.The vital element for proper operation of such a digital system is a CLOCK signal … Read more

Let’s clear the air: analog and power management of environmental sensor networks

Air quality is deteriorating around the world. The World Health Organization (WHO) states that in 2014 there were 3.7M deaths from ambient or outdoor air pollution and 4.3M deaths from indoor or household pollution. The Environmental Protection Agency (EPA) has a good treatment of indoor air here. In this article, I will be giving an … Read more

Power Tip #10: Simply Estimate Load Transient Response

This Power Tip presents a simple method to estimate the transient response of a power supply by knowing the control bandwidth and output filter capacitor characteristic. It uses the fact that the closed-loop output impedance of any circuit is the open-loop output impedance divided by one plus the loop gain, or simply: Figure 1 presents … Read more