This morning we started with a 3 phase induction motor. The first thing was to identify the terminals by measuring the resistance and labeling the wires. 294 Ohms was the winding resistance. We then wired it in star configuration was meant linking V2, U2, W2 together. Star provides lower voltage which means lower start current.… Read More »
Spent the morning testing 4 appliances. 3 heaters and a toaster. The toaster had the earth disconnected on purpose to see if we could find the fault. This gave us practice of going through AS/NZS 3760 of appliance testing and knowing off the top of our heads Visual Earth Insulation Resistance Polarity Key points to… Read More »
This is an excellent video on how the wiring is configured for a 3 phase motor
A brilliant intro into induction motors explained in a clear and easy to understand way. https://www.youtube.com/watch?v=w5ugeGOOjso
A very neat open source dashboard tool that is very simple to use. Unfortunately the documentation that comes with it is far from complete but I managed to get something up and running. It is also mobile friendly as well.
This site http://www.flaticon.com has a whole bunch of cool svg for download. SVG stands for Scalable Vector Graphics and uses XML to draw images that do not lose resolution when scaled up. To test your SVG, this site here is very handy https://www.w3schools.com/html/tryit.asp?filename=tryhtml_svg_circle
Did you know that YouTube still hires monkeys?
This video explains a 2 way switch with an intermediate switch in the middle very well. The key is not to get hung up on the labels of the intermediate switch but to use a multi meter to figure out the parallel or the cross over position. This is because the intermediate switch could be… Read More »
It was good to see the JIRA Service Desk team fix the order of their release notes. It may see minor but consistency and predictability is important.
Here is a neat article explaining the Slow Loris attack. https://www.deepdotweb.com/2017/01/19/single-computer-dos-slow-loris-attack/