Introducing QPSICE: The Next Generation Mixed-Mode Simulation Tool for Advanced Circuit Design
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Introducing QPSICE: The Next Generation Mixed-Mode Simulation Tool for Advanced Circuit Design

The original Simulation Program with Integrated Circuit Emphasis (SPICE) was introduced in 1973. Engineer Mike Engelhardt began developing his version of SPICE a quarter-century after its inception. Fast forward another 25 years and Qorvo has unveiled QSPICE, the company's latest...

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Building a Chaotic Oscillator from Common Components
Science

Building a Chaotic Oscillator from Common Components

Tim's Blog writes: A chaotic oscillator is an electronic circuit that can exhibit “chaotic“, nonperiodic behavior. A commonly cited example is Chua’s circuit, but there are many others. I always regarded these as carefully designed, rather academic, examples. So I was a bit...

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Simple circuit indicates a low battery
Basic Electronics

Simple circuit indicates a low battery

James Wood @ edn.com writes: The Design Idea in Figure 1 indicates a low-battery condition in an audio test instrument that is powered by four AA cells. As the instrument was otherwise an all-discrete design, this same approach seemed more in keeping with the spirit of the project...

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From Sand to Circuits – How Intel makes integrated circuits [PDF]
Technology

From Sand to Circuits – How Intel makes integrated circuits [PDF]

Here is a nice PDF document from Intel explaining how integrated circuits are made. From Sand to Circuits - How Intel makes integrated circuits [PDF] -...

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Disconnect circuit for 12 volt lead acid and lithium batteries
Power

Disconnect circuit for 12 volt lead acid and lithium batteries

KA7OEI designed a circuit that disconnects the battery when it over-discharges. He writes: The avoidance of overcharging is usually pretty easy to avoid: Just use the appropriate charging system – but overdischarge is a bit more difficult, particularly if the battery packs in...

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IRis – An Infrared Sensor using Photodiode amplification Circuit
SensorYoutube

IRis – An Infrared Sensor using Photodiode amplification Circuit

[devttys0] designed a sensitive IR detector for capturing weak infrared signals. He shared in detail how he designed the circuit, beginning from the basic components, walking through solving the problems and finally ended up with a complete working circuit. Craig Heffner/[devttys0]...

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Iterated-map circuit creates chaos
Science

Iterated-map circuit creates chaos

Lars Keuninckx @ edn.com writes: The Design Idea circuit shown below is a simple implementation of an iterated unimodal map, reminiscent of the logistic or Verhulst map encountered in the study of nonlinear dynamics. It is useful to show chaotic discrete-time dynamics to students, or as...

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HTML5 Circuit Simulator
Websites

HTML5 Circuit Simulator

Iain Sharp build this port of online Circuit Simulator based on Paul Falstad’s simulator, however Sharp’s version is built using HTML5 and requires no plugin to run. Think of it like animated Fritzing circuits, with a slew of pre-built circuits and components available for...

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