A Cheap Chip Metal Detector By Mahmood Alimohammadi This low-cost metal detector has a very simple and yet highly sensitive circuit that can detect a large coin-sized (25mm/1”) metallic object in air at a distance of 15cm (6”), or larger metallic objects at a distance of 50cm (20”) or more, depending on their size. While it borrows from other detectors, it is original in that it is a...
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The project is all about the finger touch sensor alarm. It uses the BC547B transistor which is a basic NPN transistor a small signal NPN transistor used for general purpose audio amplifiers and switching and a 2N6107 transistor which is intended for a wide variety of medium power switching and linear application. This little and flexible circuit consists of a touch sensor and a directly...
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The effects of isoproterenol, l-[url=http://www.lookchem.com/1-Norepinephrine/]norepinephrine[/url], and intraaortic counterpulsation on hemodynamics and myocardial metabolism were evaluated in shock due to acute myocardial infarction. Before treatment, the cardiac index was markedly reduced, averaging 1.35 liters/min/m2. Mean aortic pressures ranged from 40 to 65 mm Hg. Decreases in coronary...
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L-[url=http://www.lookchem.com/1-Norepinephrine/]norepinephrine[/url] (NE) is a neuroendocrine catecholamine that supports bacterial growth by mobilizing iron from a primary source such as holotransferrin to increase its bioavailability for cellular uptake. Iron complexes of NE resemble those of bacterial siderophores that are scavenged by human neutrophil gelatinase-associated lipocalin (NGAL)...
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4',5'-Dibromo-2',7'-dinitrofluorescein, a red dye commonly referred to as [url=http://www.lookchem.com/Eosin-B/] Eosin B [/url], inhibits Toxoplasma gondii in both enzymatic and cell culture studies with a 50% inhibitory concentration (IC50) of 180 . As a non-active-site inhibitor of the bifunctional T. gondii dihydrofolate reductase-thymidylate synthase (DHFR-TS), EOSIN B offers a novel...
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one new circuit design is invented by indian electronics and communication engineer from India with lot of advantages including cost

The [url=http://www.seekic.com/icdata/HMC304MS8___HMC304MS8E.html]HMC304MS8[/url] is a passive high IP3 mixer in 8 lead plastic surface mount Mini Small Outline Package (MSOP). This miniature single balanced MMIC mixer is constructed of GaAs Schottky diodes and novel planar transformer baluns on the chip while not requiring any external components. The RF port is balanced via the MMIC balun...
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Using a cheap USB thermometer it is very easy to setup temperature logging using a linux pc and munin.

How to open an Eken M003

A review of the Eken M003, a $150 MID running Android from China

This circuit uses digital circuits such as a demultiplexer and a binary counter to create patterns of "moving" led lights. This basic circuit is really cool when used in the dark or to light up a sign of some sort, as it creates a cool pattern that catches the eye. The main part of the circuit is the demultiplexer 74ls138, we are going to connect the least significant bits of the...
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I rustled up this simple electronic circuit “of necessity”. It takes audio straight off the Internet, and puts it on a digital recorder. There are various advantages to this, not least that one can pull the audio off any computer without having to have this or that software in place first. Note that this is a digital-to-analog-to-digital conversion, so the sound will only be as good as one's...
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As you might know Google is developing an operating system. It is still under development and therefor not downloadable in binary form. However, you can download the current sources from http://www.chromium.org and compile it yourself. Unfortunatle it takes too much time if just want to have a look. So CircuitDB has compiled it for you!

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Today I can finally announce the launch of my new site: TableTopReports.com. If you like tabletop games like Bloodbowl, Warhammer, Warhammer 40k or any other tabletop wargame, have a look at TableTopReports.com.