A grid-tie inverter converts direct current (DC) into an alternating current (AC) suitable for injecting into an electrical power grid, normally 120 V RMS at 60 Hz or 240 V RMS at 50 Hz. Grid-tie inverters are used between local electrical power generators: solar panel, wind turbine, hydro-electric, and the grid. They range from small →
The AC output frequency of a power inverter device is usually the same as standard power line frequency, 50 or 60 hertz. An ideal power inverter should generate accurate 230V AC 50 Hz or 110V AC 60 Hz power with sine wave waveform. A less ideal inverter typically generates square wave or “modified sinewave” waveform →
This posting is here to collect cyber security news in January 2021. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →
The 10 smartest Ricky Gervais tweets about religion https://inktank.fi/the-10-smartest-ricky-gervais-tweets-about-religion/ British comedian Ricky Gervais always has a lot to say. Sometimes he says it on Twitter and often it’s about the ludicrous nature of religion. Here are 10 of his finest philosophical moments in a 140 characters or less. →
Sometimes devices sold as power inverter that claim to convert 12V to 230V AC (or 110V AC in USA) are not inverters at all, but DC/DC converters that output DC. I would say that calling such device “inverter” is not right, even though it might work with some originally mains powered devices. I have one →
A relay power inverter converter simple and easy inverter make circuit to convert 12V to AC voltage that can drive some small 230V AC loads like some low power lamps (LED or fluorescent energy saving bulbs). It is often advertised as a simple and easy electronics diy projects make at home. The basic idea of →
Fiber maybe for some fastest backbone runs and longest runs properly protected and handled with proper care. But in many applications the main media is copper cable where the media selection is between unshielded (UTP) and shielded (STP) varieties. I have some copper comments on UTP vs STP. STP is nice in locations where good →
When it comes time to buying a CPU for your desktop, you’ll find a dizzying collection of model numbers and specs from both Intel and AMD. Tom’s Hardware has listed the best CPUs for gaming and best processors for work. If you want to know how each chip stacks up against all the others, this →
Christmas lights can be a beautiful sight to behold. They can decorate public spaces and homes. Stringing lights outside can be a real safety hazard if you’re not careful. For outdoors use the lights you need to have lights that are designed to be used outdoors. For outside use there are nowadays both consumer and →
Here is maybe simplest power over Ethernet (PoE) powered LED Christmas light. This circuit provides powering of LED light string from IEEE 803.2af compatible standard power supply. On the up there is the IEEE 802.3af PoE power supply that feeds 48V DC power to RJ-45 connector when it detects a PoE needing device connected. I →