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Circuit https://www.circuitlab.com/circuit/b73dsh/constant-current-source/

Description

--Works with RL<30 Ohms, Fails with RL>=30 Ohms

Instructions for how we can reproduce the bug

--Change RL to 30 Ohms, run DC Solver, ammeter current is incorrect

--Change RL to 29 Ohms, run DC Solver, ammeter current is correct

web browser

--Chrome Version 26.0.1410.6

operating system and version

   --Windows 7

Link to a public CircuitLab circuit, https://www.circuitlab.com/circuit/b73dsh/constant-current-source/

Seems to fail with RL=30R.

Works OK with RL=29R, RL=31R and RL=40R.

Chrome Version 26.0.1410.64 m

32bit Win XP Pro SP3

Please post a bug report as in:

https://www.circuitlab.com/forums/support/topic/8s9n9hav/how-to-use-the-circuitlab-support-forum/

Note: although this is not the cause of the failure; delete the 12V battery, rename the +12V labels or delete the labels and wire directly.

For explanation search CL for:

net name

Wrote the bug report, but here (Safari) it works when using the 741 (and above) op amp models.

Regards, Sancho