Replacing or installing a ceiling light fixture is often necessary because an old fixture has worn out or you want to do a decor overhaul. The work itself is usually quite easy, though anytime you are working with electricity there is some danger. Since an incorrectly installed lamp can cause an electric shock or fire →
I saw this circuit design at “I take pictures of electronics part @Facebook” https://m.facebook.com/groups/ElectronicParts/permalink/2237548103101179/ As many circuit designs posted to Facebook, this has it’s problems and non-idealities. Here are some comments on this circuit design: 1. At worst case LED will shine bright as a star in the sky until either it or the transistor →
European ceiling lights will start to use a common plug for easy installation. Device for Connection of Luminaires (DCL) is a European standard for ceiling light fixtures introduced in 2005 and refined in 2009. The history is longer. The history of the common ceiling light plug goes longer. In Finnish apartments, for over thirty years, →
I had one Xbox One Wireless Controller with broken bumber buttons. So I had to do Bumpers Replacement. Here are links to information I used in the repair problems. Xbox One Wireless Controller Repair https://www.ifixit.com/Device/Xbox_One_Wireless_Controller The Xbox Wireless Controller, manufactured by Microsoft, is commonly used with the Xbox One and Xbox Series consoles, but the →
This posting is here to collect cyber security news in August 2023. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →
Light communications is hot in news now. Here are few headlines: LiFi 802.11bb standard uses light for in-room data transmission up to 224GB/s https://www.cnx-software.com/2023/07/14/lifi-802-11bb-wifi-standard-uses-light-for-in-room-data-transmission-up-to-224gb-s/ The 802.11bb WiFi-like standard, also called LiFi, was ratified in June 2023. It enables data transmission up to 224GB/s at a few meters range within a room using light instead of →
The Engineer Comedian – Don McMillan Comedy (due to request) https://www.youtube.com/watch?v=sNNFVA-QRSY →
IT’S A HUMBLE ‘SCOPE, BUT IT CHANGED OUR WORLD https://hackaday.com/2023/07/06/its-a-humble-scope-but-it-changed-our-world/ Now anyone seeking a connection with both Pong and the Apple II can have one of their very own if they have enough money because [Al Alcorn]’s Tektronix 465 oscilloscope is for sale. He’s the designer of the original Pong and used the instrument in →
A high voltage probe allows an ordinary voltmeter to measure voltages that would otherwise be too high to measure or even destructive. Typically normal multimeters are typically designed to measure voltage up to hundreds of volts or one kilovolt. If you need to measure higher voltage, you need to use a high voltage probe. A →
I got a mains power (230V AC) surge protector for teardown and analysis. This one is designed to be installed to DIN rail on the small electrical distribution panel or inside electrical equipment. This one was in original package but already the indicator showed that it was broken. This protector protects against voltages above 320V →