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What components can I use in the library?

0 votes
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Please I want to use a fuse and electromechanical relay with my circuit. The circuit I am following is shown below , please what are the right components to select for the fuse and electromechanical relay as shown in the image below?
asked Nov 5, 2023 by Awesome (30 points)

1 Answer

0 votes

Hello,

A basic fuse model could be implemented as a switch that is initially closed and opens when the current exceeds a certain threshold:

image

If the current is inductive you'll need to add a finite off-resistance (say, 1e6 ... 1e8 Ohms) in parallel with the switch, in order to avoid errors due to state inconsistencies.

You could also insert a Turn-on Delay between the Relational Operator and the Flip-flop so that the fuse will blow only if the current continuously exceeds the threshold for a certain amount of time.

The output of the flip flop could also directly close the M1/M2/M3 switches in synchronization with the fuse opening event.

answered Nov 17, 2023 by Kris Eberle (1,607 points)
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