PSpice input issue

Discussion in 'Electronics Resources' started by athonks, Apr 15, 2011.

  1. athonks

    Thread Starter New Member

    Apr 15, 2011
    4
    0
    Hi,
    I'm having an issue with a fairly simple DC circuit(6 rezistors and 3 DC sources) which seems to have goten the best of me.
    My problem is that in the output file the most of the values are off the edge :confused:
    This is my code :
    Circuit
    R1 1 2 5
    R2 3 6 10
    R3 4 5 10
    R4 3 7 10
    R5 2 3 20
    R6 7 5 30

    V1 1 0 30
    V3 2 4 50
    V2 7 6 40

    .OP
    .DC V1 LIST 30
    .PRINT DC I(R1),I(R2),I(R3),I(R4),I(R5),I(R6)
    .PROBE
    .END
    And the circuit looks like this:

    [[​IMG]
    All the help would be very appreciated.
    Also on tinypic:Schematic
     
    Last edited: Apr 15, 2011
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Your SPICE code does not match the circuit.
    For example, V1 is connected to nodes 1 and 0 (ground).
    V3 is connected to nodes 2 and 4 - node 4 should have been ground.

    Also, in the circuit, you have wires running through the resistors, which will short them out.

    For your circuit, I get:

    --- DC transfer characteristic ---

    v1: 30 voltage
    I(R6): -0.285714 device_current
    I(R5): 0.285714 device_current
    I(R4): 2.14286 device_current
    I(R3): -1.42857 device_current
    I(R2): -1.85714 device_current
    I(R1): 1.14286 device_current

    From your SPICE netlist, I get:
    --- DC transfer characteristic ---

    v1: 30 voltage
    I(R6): 1.07692 device_current
    I(R5): 1.07692 device_current
    I(R4): -1.46154 device_current
    I(R3): -1.07692 device_current
    I(R2): 2.53846 device_current
    I(R1): 0 device_current

    Try labeling the nodes in your schematic, and see how different they are from the netlist that you generated.
     
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