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Electronic Goldmine - Electronic Components, Parts, Test Equipment, Kits, Goldmine.

Electronic Goldmine - Electronic Components, Parts, Test Equipment, Kits, Goldmine.

http://www.goldmine-elec.com/

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Electrical, Electronic Passive Devices Manufacturers & Wholesale Suppliers Home » Electrical & Electronic Passive Devices Electronic components that consume electrical energy or power but does not produce electrical energy are called electronic passive devices. In other words it can be said that passive devices contribute no power gain or amplification to a circuit. They only require a signal to perform their function. Electronic passive devices are used for decreasing the amplitude of a signal, control the direction of the current, to produce inductance in a circuit, convert alternating current to alternating magnetic field and to resist electric current by producing a voltage drop. Electrical, Electronic Passive Devices include Resistors, Capacitors and Inductors, required to build electronic circuits.

DIY « Filippa Malmegard The Internet of Skills I just watched the refreshing TED group talk on the notion of an Interspecies Internet featuring a hero of mine, Neil Gerschenfeld of MIT’s Center of Bits & Atoms, alongside animal cognition expert Diana Reiss, brilliant network guru and evangelist Vint Cerf and the more unlikely “geek band” member musician Peter Gabriel. Loved the idea […] My visit to ‘NYC Resistor’ – Cult hackspace in Brooklyn On my trip over to NYC this Feb I popped by cult Hackspace / Makerspace NYC Resistor in downtown Brooklyn. Hot cocoa cookies I am a teeny bit obsessed with the cookies from the most recent issue of EveryDay with Rachael Ray magazine. This recipe is the second of many cookie recipes on my list to make this holiday season. Sweets are taking over my life! Just ask my coworkers.

DorkbotPDX Instead of a weekly order, 2 layer circuit boards are now sent to the fab when the panel fills up. This means panels are going out 2 to 3 times a week instead of just once a week. Contents New ordering website! BEAM Heads 101 First let's examine how the HLO operates, without using the IN signal, behaving like a classic CMOS astable oscillator. The oscillator consists of 2 inverters with the input of inverter A serving as a summing node for several signals. As can be seen, a 5M potentiometer (R1) is connected from the output of inverter A back to it's own input. Because of the signal inversion, this is DC negative feedback, which tends to drive the input voltage of inverter A towards its 1/2V+ threshold.

How to build electronic devices on your own Building electrical devices is probably the most inexpensive engineering you can do because most electronic components are very cheap, like less than $1. How to actually build devices on your own isn't taught enough in engineering courses, so here's a quick summary of how to get started making devices like I have on my site. In this page, I kind of assume you're an engineer/scientist of some sort (or studying to be one) and that you've already had a few electrical engineering classes. If you don't know any electrical engineering, you'll obviously need to learn the basics before you can start inventing.

How much material does the laser burn away? In 2008 I sought to try and quantify the kerf of our laser cutter, or how much material the laser cutter burns away when cutting specific materials. The idea behind providing this information is so you can make a more educated guess of what sizes to draw your shapes if you are needing a tolerance fit. This information is particularly relevant if you are creating inlays and slotting joints*. Please note that these are old figures, which we are hoping to update soon – we cannot guarantee super-precise kerf widths at this time. Prototyping for yourself is the best way to guarantee the perfect result but hopefully this info will give you an idea of what to expect. So anyway here are the results…

Teach yourself to program We are entering the summer, the perfect time to improve yourself, you could go running or swimming, you could learn a new foreign language or perhaps you could learn to program. Self-learning is not as hard as it sounds, and it’s much easier than self-learning Spanish or French. There are really wonderful sources to start learning these new languages, understanding the concept behind programming and giving it a try with some interesting problems. Basic Programming Via XKCD ATX Bench Power Supply — Russell Jones Here is a very useful bench power supply that I made from an old ATX supply. I will not re-iterate what has been done before (look at ATX -> Lab Bench Power Supply Conversion on Instructables for a great discussion). I made this while at college in their well furnished machine shop. The pictures are self-explanatory. I spent about $3.00 on the rocker switch and military cover. The rest was trash or free.

Luke Maurits » Blog Archive » Building a DIY ROV Published: August 02, 2010Tags: untagged I've decided to undertake the project of building myself a Remotely Operated Vehicle, or ROV. Despite sounding quite general, the term ROV appears to be applied exclusively toremotely operated underwater vehicles - basically, robot submarines - rather than just any kind of vehicle which is remotely operated. "Real" ROVs, like the Seaeye Falcon, pictured below are capable of diving hundreds of metres under the surface of the ocean and find a wide range of applications in both the commercial world (underwater oil drilling operations being a topical example) and the scientific research community. They're fairly pricey too, with even the most basic models - which basically consist of a camera and some light - costing tens of thousands of dollars.

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