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It is useful to be able to remember the colour code that refers to resistors or any other electronic component for that matter However if you are taking GCSE you will be invariably given a colour code to work with. Having an incomplete knowledge is not therefore the handicap it could be.
One the most important and fundamental laws of electronics is that of ohms law. This law defines the relationships between current, voltage and resistance. A good way to understand ohms laws is an analogy with a domestic water system. The same way that an electric current flows through a copper wire, water flows through a copper pipe in a water system. Most people do not think to much about the fact but when they turn on tap the water comes out as a result of the pressure that is provided by a pumping station some miles away.
Most students who begin electronics are at some time introduced to constructing a circuit using a soldering iron. Many years ago I was placed in a similar situation, I remember being told to tin the bit and apply the heat until the solder melted. Useful advice I suppose but having many years later worked with a professional wire man I realized how poor the soldering technique I used.was. I will leave the health and safety aspects to your instructor, the object of this short article is too make you far better than the average amateur solder.
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Product Highlights Single Board Computer implemented by the combination of a CM-T3530 module and a SB-T35 baseboard. Texas Instruments OMAP3530 CPU @ 720 MHz, 256 MB mDDR, 512 MB Flash Disk WLAN / WiFi 802.11b/g interface 1400 x 1050 graphics controller with interfaces for LVDS, RGB and DVI TV-out with S-Video interface Camera interface 3 serial ports Host and slave USB ports Touchscreen interface Keypad and GPIO connectors Sound codec with stereo output and line input Two 100 Mbps Ethernet ports MMC / SD / SDIO socket RTC with back-up battery Lithium-ion battery charger Note: some of above specified features are optional Description The SBC-T3530 is a small single board computer based on the Texas Instruments OMAP3530 processor. It is implemented by a CM-T3530 module providing most of the functions, in combination with SB-T3530 carrier board providing connectors and several additional features.
How-To: Romance Pants Brought to you by Team Instructables is the hilariously clever Romance Pants project. The zipper being pulled down triggers the room lights dimming and the stereo volume going up.
Because some fellow students asked for it I’ve written a tutorial on how to etch your own circuit boards. You can download a pdf version here WARNING: In the etching process acid is used. USING THIS TUTORIAL AND THE GUIDELINES IS ON YOUR OWN RISK. I’ll point out some of the things you should take care of but I can not be held responsible for accidents.
Measurements in Electronics Many students in their electronics studies have difficulties in understanding the units used in electronics. Whatever units you are dealing with amps(current), volts (voltage), watts(power) then the unit of measurement is broken down into smaller and larger units. If you are refering to the electrical measurement of amps, 1 amp is a rather large unit used in power electronics, smaller units are required in electronics. In electronics the prefix multipliers are in increments or decrements of three orders of magnitude 1 amp 1 milli amp = 0.001 shown in shorthand 10 -3 1 micro amp = 0.000 001 shown in shorthand 10 -6 1 nano amp = 0.000 000 001 shown in shorthand 10 -9
Develop your skills with the Penn Foster Basic Electronics Program. Learn all about electronics, from basic safety to universal design and theory. Train effectively and conveniently with our online program.
Image courtesy of Switched On Tech Design (www.sotechdesign.com.au) – thanks guys! The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. It’s a capable little PC which can be used for many of the things that your desktop PC does, like spreadsheets, word-processing and games.