Simulating simple electric circuits

[Hamilton, William]

> From: Bjoern Schliessmann
> Sounds more familiar than the analog approach. Maybe I misunderstood
> something ... but I can't transfer my problem to this way of
> thinking yet. My biggest problem is the fact that relays aren't
> really interested in voltage, but current.
> 
> Also, I find it difficult to transfer this circuit logic to boolean
> logic I can contruct logic gates from. Sometimes, electric circuits
> are used in different directions.

You shouldn't have to worry about current degrading.  You apply a
current to the relay's coil, and it passes through the coil to ground
and triggers the relay.  The relay's outputs open or close connections
from the current source to the connected devices' inputs.  The only time
you'd have to worry about low currents is if a single relay is connected
to a lot of device inputs, because the current is split across the
inputs.

>From a logic standpoint, all you care about is whether each input and
output is on or off.


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-Bill Hamilton