Captain Nguyen Posted August 15, 2006 Report Share Posted August 15, 2006 I have found this schematic from internet.But I have adapt from 2A to 10A power supply.Could this work? Quote Link to comment Share on other sites More sharing options...
audioguru Posted August 15, 2006 Report Share Posted August 15, 2006 How are you going to cool the MJ15004 power transistor when it must dissipate 313W??It will melt. You will need many power transistors mounted on a huge heatsink and a high velocity fan.The 25VAC transformer produces a peak voltage of 35.4V. The rectifier bridge will make a voltage of 33.4VDC. When the output voltage is turned down to 1.2V then the MJ15004 power transistor will have 32.5V at its emitter and 1.2V at its collector and 9.5A through it. Its power dissipation will try to be (32.5V-1.2V) x 10A= 313W. Quote Link to comment Share on other sites More sharing options...
Captain Nguyen Posted August 15, 2006 Author Report Share Posted August 15, 2006 MJ15004 use 250W. :-XHave not looking to datasheet.Datasheet MJ15004 Is this schematic right now? Quote Link to comment Share on other sites More sharing options...
audioguru Posted August 15, 2006 Report Share Posted August 15, 2006 MJ15004 use 250W. Quote Link to comment Share on other sites More sharing options...
Captain Nguyen Posted August 15, 2006 Author Report Share Posted August 15, 2006 I understand,Thank you. Quote Link to comment Share on other sites More sharing options...
Captain Nguyen Posted August 27, 2006 Author Report Share Posted August 27, 2006 I have thinking about this.I will made from 10A into 5A.10A is too much for my projects. Quote Link to comment Share on other sites More sharing options...
MP Posted August 27, 2006 Report Share Posted August 27, 2006 If you have a 10 amp supply, it does not mean your projects will use 10 amps. They will only take what they need. However, you should take precaution to have some limiting feature whether it is a 10 amp or 5 amp supply.MP Quote Link to comment Share on other sites More sharing options...
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