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    0-30V Stabilized Power Supply

    Hello PicMaster! Have a look at my post from August 27, 2009, 05:18:37. I posted my schematic with my bill of materials. I built this power supply and it works perfectly! I used a 2x30V/230VA transformer in order to build a dual version. Link to transformer...
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    0-30V Stabilized Power Supply

    Hello! Yesterday I got an oscilloscope to see if there is an output voltage ripple. And I have to say: I was not able to see a ripple. Not even by 0,05V/div. I measured  it by 30V 0A; 30V 3A; 1V 3A;... with current limiting and without My power supply works very fine!  ;D Thx for all your...
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    0-30V Stabilized Power Supply

    Hi audioguru! Thank you  :D The schematic is for simulation only. I added a small statement in the schematic: "For parts value see bill of materials". There you can see that I used a BD139 for Q2. In LTspice IV there is no BD139 in the database  ::) I also don't know why the current limiting...
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    0-30V Stabilized Power Supply

    And the last picture:
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    0-30V Stabilized Power Supply

    Here are two more pictures
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    0-30V Stabilized Power Supply

    Hy Guys! Okay - after 1 damaged Zener and 2 damaged power transistors my power supply is now finished. My experience: - I used the MC34072 oamps with max.44V instead of the MC34071. With the MC34072 I was not able to do the offset compensation. So the current limiting became a problem. ( When I...
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    0-30 Vdc Stabilized Power Supply

    Hi! Thank you for your fast answer! I can put your mind at rest - the rectifiere-diodes are for simulation only  8) I have found a diagram for the Fuse - it will not be blown by the current  :) I haven't found a MC34071 so I decided to use 3xMC34072. But thanks for the advice! The...
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    0-30 Vdc Stabilized Power Supply

    Hey Guys! It seems to be a view gurus here and I hope someone is able to help me! I bought the whole parts which are needed for the second project shown in the schematic. I have simulated the schematic and now I am not sure if some parts will be damaged. I used a 30V 230VA Transformer with...
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