zoom Posted January 14, 2004 Report Share Posted January 14, 2004 This is a power supply 0-70VDC but gives out a little current (mA) .Is there a way to make it more powerfull? I attach the schematic below: Quote Link to comment Share on other sites More sharing options...
MP Posted January 15, 2004 Report Share Posted January 15, 2004 If I translated this correctly, you are talking about the unit having very very low current output?If this is the case, I see that you have 60 volts before your voltage goes into the 1.8K resistor. Using Ohm's law, 60/1800 leaves you only 0.033 Amps of current into the 12 volt regulator. The regulator, 2n3055 transistor and the rectifier bridge can handle more current, so I suggest changing the value of this resistor to give you more. Does anyone see anything else that should be mentioned?MP Quote Link to comment Share on other sites More sharing options...
up_in_smoke Posted March 1, 2004 Report Share Posted March 1, 2004 hey,im pritty new in this field, but wont the current drawn depend on your load? ::) Quote Link to comment Share on other sites More sharing options...
MP Posted March 1, 2004 Report Share Posted March 1, 2004 Yes, up to the allowable value of the resistance. (V/R=I)After that you get heat and after that you get the smoke if the resistor cannot handle the power dissipation. ;DMP Quote Link to comment Share on other sites More sharing options...
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