[Mehdi's] Shocking Stun Gun Tutorial

[Mehdi's] Shocking Stun Gun Tutorial

hackaday.com 26 Oct '14, 2am

To create his stunner, [Mehdi] used a car ignition to produce a high voltage. The igniton coil, which is a specialized transformer, allowed him to generate the >10000V output needed for the stunner. The coil has a 60:1 ratio and is powered by a 12V DC supply. Since a coil is a short at DC, the system only creates a high voltage pulse when power is disconnected. However, the pulse was too short to create a satisfying arc. [Mehdi] added a capacitor, creating an LC circuit that oscillates as the charge decays, creating a nicer spark. He then used an RC circuit and a relay to create a simple oscillating switch. For the finishing touch, he crea...

New battery technologies required for onslaught of mobile devices #wearabletech

ept.ca 25 Oct '14, 8pm

ABI Research forecasts that the installed base of mobile devices (smartphones, basic mobile phones, wearables, tablets, and notebooks) will r...

the Delusions of Big Data and Other Huge Engineering Efforts vía @IEEESpectrum

spectrum.ieee.org 25 Oct '14, 6pm

Well, on all academic topics there is a lot of misinformation. The media is trying to do its best to find topics that people are going to rea...

[EE Times Japan]製品解剖 iFixitがWebで公開:「iPad Air 2」を分解

eetimes.jp 24 Oct '14, 3am
[EE Times Japan]製品解剖 iFixitがWebで公開:「iPad Air 2」を分解

All material on this site Copyright © 2005 - 2013 ITmedia Inc. All rights reserved. This site contains articles under license from UBM Electr...

OpenCL and the future of FPGA and DSP development

dsp-fpga.com 24 Oct '14, 5pm

Over the past 25 years FPGAs and DSPs have enjoyed steady growth and have been deployed in a wide array of applications. Their high performan...

Have an #MCU project? Write for Circuit Cellar magazine #DIY

circuitcellar.com 25 Oct '14, 6pm

Circuit Cellar publishes articles , books , and w ebsite content (workspaces, tutorials, proj...

The CRC Wild Goose Chase

embeddedrelated.com 23 Oct '14, 7pm

''' Python code to calculate X.25 CRC16 values. Copyright 2014 Jason M. Sachs Licensed under ...

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