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Release Notes for Electronics Workbench 3.0D
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Welcome to Version 3.0 of Electronics Workbench. The following
information was received too late to be included in the Electronics
Workbench User's Guide.

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Analog tutorial
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As you follow the tutorial in Chapter 4: Trying Out the Test Instruments,
make sure the oscilloscope trigger is set to Auto. (Auto triggering is the
default setting, useful for most purposes.)

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Frequency of AC sources
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AC circuits can have only one frequency. If a circuit uses more than one AC
source, setting the frequency for one source automatically changes all
other AC sources to the same frequency.

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Grounding circuits
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Grounding an analog circuit is necessary only if the circuit includes an
opamp, transformer or controlled source, or if an oscilloscope is used.
(The oscilloscope itself does not need to be grounded.) Digital circuits do
not need grounding.

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Batteries and switches in parallel
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Batteries and switches in Electronics Workbench have no resistance. If you
want to use batteries or switches in parallel, insert a 1-ohm resistor in
series with each one--otherwise you'll have a short circuit.

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Selecting components may solve simulation problems
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When a circuit has both very large and very small values, inherent problems
in matrix algorithms may result in simulation errors.

If you see an error message such as "internal error," try selecting one or
two components in the circuit. Then activate the circuit again. Selecting
components changes their order in the solution matrix, so the problem may
no longer exist.

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Model files
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Nonlinear component models supplied with Electronics Workbench are no
longer stored in the DEFAULT.MOD file. Instead, each nonlinear component
has its own DEFAULT model file, which is installed in the MODELS directory.
Now changes to one component's models have no effect on other components.


Electronics Workbench is a registered trademark of Interactive Image
Technologies Ltd.

(c) Interactive Image Technologies Ltd., 1993.