You have most probably used 7805 voltage regulator many times. It is a simple way to get regulated +5V power supply. A Detailed Look at the 7805 Voltage Regulator post at hackaday.com points to an an amazingly detailed article about its theory of operation and implementation of 7805 regulator. As some elements looked a bit odd during →
Techcrunch claims that Apple’s brand new iPhone 6 is the best smartphone. I have not had my hands on one to make my judgements on that. But I am interested to see what is inside this new gadget. iPhone6 is brabd new, but iFixit has already done iPhone 6 Teardown and iPhone 6 Plus Teardown →
I have posted some teardowns of serveral electronics devices and have some notes on their electrical safety. Examples of ones with questionable safety were this is tiny USB charger and this USB charger. The later USB charger posting has also example of power supply that seems to have properly built safety in it. But how →
One day I bough a very cheap quite nice looking (if you like Apple style) very cheap (2 USD) USB charger from dx.com. I was curious to see if anything useful could be built this cheaply. The product USB Power Charger Adapter – White (EU Plug / 100~240V) carried SKU 176662 code, but there does →
3x Battery Teardown article shows you what is inside different batteries. So if you open up a 9 V battery, you find 6 thin 1.5 V cells inside. But what was inside that lantern battery, the rechargeable PP3, or the funny shaped lump on the back of my laptop? Check 3x Battery Teardown article to see. If you →
KitKats, snapdragons? Is Google’s latest smartphone a sweet treat? Let’s check out Nexus 5 Teardown and Teardown: Google’s Nexus 5 Deconstructed articles to find out how this smart phone is built. →
How low can Ethernet switches prices go? In small unmanaged 8 port 10/100M 5 or 8 port switches typical price is around 15-25 Euros (around 2-3 Euros per port). But there are even cheaper Ethernet switches. Netwjork Tenda S108 SOHO kytkin/switch jossa 8 porttia is a very cheap 8 port 10/100M switch that costs only →
Microsoft released the Xbox One today. Also a recent research says that Game Play Has No Negative Impact on Kids, UK Study Finds: A massive study of some 11,000 youngsters in Britain has found that playing video games, even as early as five years old, does not lead to later behavior problems. So there is →
At AudioVisual 13 there were some equipment teared down to point you can see what in inside them. Here are some. First picture shows what is inside a moving light. Here is a look inside a professional high power Barco HDX video projector. As you can see there are some similarities to what is inside →
My old “smartphone” got to the end of the life beyond worth to fix. So I changed to a proper Android smart phone. Samsung Galaxy S4 Mini is Galaxy S4′s little brother is not only smaller but also much lighter than Samsung’s flagship phone. My initial feeling after few days of use is very positive. →