Why is there an error

122

01:21:14

Why does this say 'check circuit topology' when both switches are down? It works correctly otherwise

published 2 years ago

aaaaa10

2 years ago

no battery, add capacitor on both lines

wyoelk

2 years ago

Pretty sure you are right as the circuit is simply two switches in parallel. I would think it is a program bug. But here are some basic circuits that I started with, http://everycircuit.com/circuit/522497436706406 hope you enjoy

592azy2circuitdude

2 years ago

I've run into this anomaly before. I think it arises because EC thinks there is a short circuited component (one switch is shorting the second!). To remedy this, place 2 small resistors in series with each switch to add contact resistance. Hope this helps.

ViolationMad

2 years ago

This is most certainly a result of running the sim with ideal components. Each switch has a contact resistance of 0 in Sim and putting two of those in parallel would result in a division by 0.

Redstone_guy

2 years ago

@ViolationMad, because in the two formulas for resistors in parallel, Rtotal = (R1*R2*R3... *Rn)/(R1+R2+R3...+Rn) and 1/Rtotal = (1/R1) + (1/R2) + (1/R3)... + (1/Rn), result in dividing by 0?

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