Recent content by kobus1

  1. kobus1

    Convert 0-30V 3A PSU to 5A or more

    i live in south africa.not exactly an electronics hub but we manage. any case, even $10 is a bit pricey for a student wanting to build 2 units for dual power supply purposes. i got the tle2141 which can handle 42V which will have to do for now. I can always upgrade later. hopefully the PCB...
  2. kobus1

    Convert 0-30V 3A PSU to 5A or more

    O.K im seriously sourcing components. Wil the LM343H replace the opa445AP?? If not the LM143 Id prefer the LM343H because he might be cheaper. Here the opa445 goes for about 25$US which is way above my price class.Also it's only available from one supplier.Must be because Burr/Brown was taken...
  3. kobus1

    0-30 Vdc Stabilized Power Supply

    sorry meant audioguru!!
  4. kobus1

    0-30 Vdc Stabilized Power Supply

    Hello Kasamiko. I don't know about 0-30V 0-3A power supply but see under electronic forums-->project design/ideas-->modify 0-30V supply or something like that.On the last page is pretty much a summary of what audiophile thinks should be modified for a 5A supply.No-one knows yet if it works...
  5. kobus1

    0-30 Vdc Stabilized Power Supply

    I have also posted this reply on the modification thread. would just like a reply if this could be a working model. otherwise i'm starting building tommorow and see what i end up with. so far it seems that it will work...
  6. kobus1

    Convert 0-30V 3A PSU to 5A or more

    Lets try again!!! Do not press enter accidentally while typing!! (and not on the type screen anymore) after 2 hours of posts reading this is what i have for mods Transformer : 30VAC @ 5A = 30*5*1.5 = 225VA stepdown transformer Resistors : R2 & R3 --> 1/2 W R7...
  7. kobus1

    0-30 Vdc Stabilized Power Supply

    Hi all Im new to this forum Im attempting to build the 30 V supply 2 questions. 1 -> can i put a LED & R right after the diode rectifier bridge in parallel with the rest of the circuit or will the say 20mA reduction(parallel current flowing away) caused by the LED have an effect on...
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