Real time orcad simulation

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abhishek.2138

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How to simulate wein bridge oscillator in orcad pspice...?

The circuit works fine on breadboard...

Please find the circuit...

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I created simulation profile.. but circuit is not simulated.

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I am using orcad 17.2
 

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Simulating oscillators in transient domain simulators needs tricky method because transient simulator takes the nodes voltages and branch currents as initial values so the simulator doe not understand that is a oscillator or not.In order to simulate such circuits, a trigger circuit should be used to excite the oscillator.A placing a simple one shot pulse voltage/current source will excite the circuit and the rest may be simulated if there is any other constraints.A proper node can be excited by a pulse source ( for instance a fast rising-falling PWM source does generally work)
 

Also a skip initial operating point command (.uic) in SPICE will usually kick-start an oscillator.
 

How to excite oscillator by one shot pulse voltage/current source???

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How to use skip initial operating point command (.uic) in P-SPICE???

I am using orcad 17.2.
 

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