Wrong frequency is simulated

Hello

I have circuit based on 555 timer which should produce 40 kHz (50% DC) square wave.

But Multisim simulate Khz 26,367 only.

Calculated circuit by "tools/Circuit Assistant / 555 Timer Assistant /" and checked with the data sheet.

This circuit assembled aboard real maket and works very well.

Version of Multisim is 10.1.1

So, what's wrong here?

Thank you

Sergey

Hello

I built the circuit using the values of the specified element and I was able to get the circuit in order to produce the right reading by changing the time step (TMAX) of 1e - 5 sec to 1e-8 seconds, this setting is under simulation > Interactive Simulation settings.  By reducing the time step, you're saying the Simulator to take several samples and Donna and allow a reading more accurate.

Tags: NI Software

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