Any form of energy, when not properly controlled or harnessed, can result in serious danger to those who use it. Electricity at any voltage can be dangerous and should always be approached with caution. Direct Dangers of Electricity include a variety of hazards that include Electric Shock, Physical Burns, Neurological Damage and Ventricular fibrillation resulting →
This posting is here to collect cyber security news in June 2021. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →
Sometimes there are needs to measure mains voltages with oscilloscope. You must be very careful when measuring voltages on the mains with any measurement instrument. The mains voltages are absolutely deadly. Measuring mains voltages with multimeter can be dangerous. Trying to do the measurement of mains voltage with oscilloscope is potentially more dangerous, because typically →
Know Your Meme: Indestructible Nokia 3310 https://knowyourmeme.com/memes/subcultures/indestructible-nokia-3310 Indestructible Nokia 3310 is the nickname given to Nokia’s 3000 series mobile phones and customer review parodies poking fun at their durability and heavy weight. The Nokia 3310 mobile phone was released in the fourth quarter of 2000. It is considered one of the best selling phones of →
Today’s USB-C charging can support up to 100 watts. But that’s not enough for all gaming laptops and other power-hungry devices. There seems to be real need for more USB power because some manufacturers have sold off-spec 130W USB-C adapters. The new standard capacity of 240 watts is enough to run larger monitors, printers, gaming →
I have had several situations where everything is hum free, but when I disconnect or power down the signal source (smart phone, computer etc..) I start hearing annoying humming noise. The noise goes away when the signal source is plugged in and powered. Latest example was some cheap multimedia speakers connected to USB sound card. →
Old telephone cables are being pulled from the ground to make room for new fiber optic cables in Helsinki Finland. Bye bye PSTN. According to plans they will be gone in few years. Here they are pulling out the old telephone cable. Freshly pulled out “filled liquorice”. Old telephone wires to carry PSTN, ADSL and →
Top 10 Digital Transformation Trends For 2021 https://www.forbes.com/sites/danielnewman/2020/09/21/top-10-digital-transformation-trends-for-2021/ Predictions 2021: Technology diversity drives IoT growth Enterprises, consumers, and different stakeholders will continue to drive demand for new internet-of-things (IoT) applications, technologies, and solutions in 2021 across verticals and geographies. Here are Forrester’s five major IoT predictions for 2021. https://www.zdnet.com/article/predictions-2021-technology-diversity-drives-iot-growth/ →
Moxa NPort® 5400 device servers provide many useful features for serial-to-Ethernet applications, including an independent operation mode for each serial port, user-friendly LCD panel for easy installation, dual DC power inputs, and adjustable termination and pull high/low resistors. NPort® 5400 device servers can connect up to four serial devices to an Ethernet network, allowing you →
Traditionally analogue video transmission is done using 75 ohm coaxial cables. Those video signals are not directly compatible with nowadays more widely used twisted pair wiring (CAT5, CAT6 etc..), which means you just can’t wire the signals directly form video output to a twisted pair wire. The main problems in connecting 75 ohms video source →