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Everything posted by Gazza
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This is a method of calculating bandwidth. The bandwidth is the the difference between the upper and lower 3db points.
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Yes, that is right. However that is only true if that is how the secondary terminals are marked. Transformers are always rated in VA. In this case you have a teansformer that is 24V @ 12A. VA = E x I = 24V x 12A = 288 VA I hope this helps, Aaron
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Hi Stoodent, You can buy a pretty good home meter for that price. Just make sure that when you choose your meter it is a true RMS meter. The cheaper meters typically aren't. Also try eBay, I have seen some pretty good deals on there. Try the Fluke 110, $117 http://www.action-electronics.com/fluke.htm
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Hey Everyone, Can anyone direct me to some articles on the topic of skin effect in conductors? I need a good reference for calculating wire resistance for a given frequency and distance. I am also interested in the mathematics behind the Litz wire.
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Woirking in the Power Electronics and Power Quality field, I deal with UPS's all of the time. Even a small 500VA UPS is a very complicated machine. It is not designed in two parts, it actually has many more pieces than that. Since most modern UPS's are "online" I will include a block diagram for one. This diagram is over simplified. It is missing the boost circuit and all of the PWM control. Not to mention the fact that the rectifier is a 12 pulse SCR bridge. Good Luck :)
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I wouldn't buy a power suppily, build one for your first project :) http://www.electronics-lab.com/projects/power/003/index.html
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As a Power Electronics Technologist, I would really love to see an area specifically for Power Electronics. Also since I am a huge PLC nerd, it would be very cool to have a space for PLC discussion. I would be more than willing to help out with the new topics. Thanks, Aaron
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Hey there everyone, Just wanted to say hi as I just signed up for this board. I am an Electrical Engineering Technologist. I wok in the Power Quality Field in Toronto, Canada. Hope to talk with you all soon :)