xristost Posted March 25, 2013 Report Share Posted March 25, 2013 He must be using liquid nitrogen and a huge fan to cool his single 2N3055 transistor.There is not need for nitrogen neither for huge fan. It's a laboratory power supply which in my book is used for testing some projects, usually for short period of time. Dissipating power will be problem if power supply is used for extended period with low output voltage and high current . When I started the project I had already the enclosures so I had to take their sizes into consideration. There is a small fan which is switched on when temperature rises. To mjvision : there is no need for emitter resistor if there is only one transistor. P.S. Soon there will be improved version of the schematic in my blog. Stay tuned :)P.P.S. The improved schematic: http://diyfan.blogspot.com/2013/03/adjustable-lab-power-supply-take-two.html Quote Link to comment Share on other sites More sharing options...
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