multisim 11 transformer problem

Discussion in 'The Projects Forum' started by bobon721, Feb 9, 2011.

  1. bobon721

    Thread Starter New Member

    Feb 8, 2011
    18
    0
    Hi! New guy here!
    I'm designing a power supply circuit. Here are the specifics: 230Vrms 60Hz ac source, bridge rectifier, 5, +-15, variable dc outputs (all grounded), short-circuit protection using relays, transistors to increase current output of voltage regulators to required 3A max, and a step down transformer.
    I'm using a 10:1 rated virtual transformer to deliver the required 3A max current throughout the circuit. I'm not using the 10:1 power transformer because it delivers way too much current (over 1kA).
    However, the rated virtual transformer's coils always break when I start the simulation. I've tried using the said transformer in a simpler circuit but it still breaks.
    How can I fix this?
    There are parts in my schematic that aren't finalized yet so errors are to be expected. Tips on those errors will be greatly appreciated.
     
    Last edited: Feb 9, 2011
  2. bobon721

    Thread Starter New Member

    Feb 8, 2011
    18
    0
    schematic and screenshot attached
     
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