Cell Phone Car Charger

The goal of this project is to demonstrate the design, simulation, and construction of an in-car cellphone charger. The entire process will be recorded on video for educational purposes.   SpecificationsInput: Car Battery 12V nominal (11.4V-12.9V)Output: 5V, ~0.5A cell phone chargerDesign ParametersVin: 12V +/- 2VVout: 5VIout: up to 1A; +/- 50mA ripplef_sw: 500kHzComponent SelectionIC: TPS5410: 1-A Wide Input Range Step-Down Swift Converter from TII have listed some possible components to use in the charger.A simple TI controller with integrated switch. The only problem is it has a 1 Amp current limit and we want 0.7 Amp limit....

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Direct Injection Box for Recording & PA Systems

Direct Injection Box for Recording & PA Systems Introduction A Direct Injection (or DI) box is a very handy piece of equipment for any public address rig or recording studio, whether for band or general use. It will allow you to connect the output from guitar amps, keyboard mixers, tape machines and just about anything else directly to the mixer, without using a microphone, and with no hum loops. The unit described will convert unbalanced inputs (such as from a guitar or bass amp) to balanced, allows the level to be set to something reasonable, and comes in two flavours. There is a completely passive version that uses a transformer to...

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GUITAR FX

www.diystompboxes.com (forum, faq, layout gallerynya)http://www.diystompboxes.com/pedals/schematics.html http://diy-fever.com/www.diokay.comhttp://www.diystompboxes.com/pedals/mods.html (simple mods)www.geofex.com (some important theories)www.tonepad.com (home of GT2 clone)www.generalguitargadgets.com (lots of FX PCBs, samples, parts)www.runoffgroove.com (great original design FX and sound samples)www.home-wrecker.com (lots of sound samples)http://www.indyguitarist.com/torchy/http://web.archive.org/web/200208241...ng.html#item44www.18watt.com (clone ampli marshall 18watt)www.ax84.com (ampli tabung)http://diy.musikding.de (German)http://diy.erikhansen.net...

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