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Problem with Proteus ... Square Wave Generator Example

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MAAASD

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Problem with Proteus ... Triangular Wave Generator Example

Hello all,
I've designed a square wave generator on proteus and i want to check its output on the
virtual graphic mode but it seems i've a problem with the design itself
I got this error "Singular Matrix : check node ....."
here is the simulation file
View attachment Triangular_wave1.zip
Your help is much appreciated :)

- - - Updated - - -

It's a Triangular wave not square wave sorry :)
 
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MAAASD

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MAAASD

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hello again,
I still need your help :)
 

expert_vision

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I'm trying to simulate the same type of triangular wave generator in Proteus and it fails to find a solution for the circuit, as well.
 

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