Bench Power Supply (PSU) tutorial

Channel: Erv Plecter

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Apologies, this videos isn't "short" and there's much to say. Hope you'll see the (good) use of a bench power supply with this tutorial.
The cheapest kind of bench PSU you can use is this 18V / 3A model :
http://www.amazon.com/Tekpower-HY1803D-Variable-Power-Supply/dp/B000CSQK5E/ref=sr_1_4?ie=UTF8&qid=1379688216&sr=8-4&keywords=bench+power+supply

My best bargain choice would be currently something like this:
http://www.amazon.com/Mastech-Single-Output-Power-Supply-HY3003D/dp/B004ISQ270/ref=sr_1_2?s=industrial&ie=UTF8&qid=1379688309&sr=1-2&keywords=bench+power+supply