Push-Pull Inverter and Transformer Problems

Hi,
I’m new to the forums and wonder if someone can help me with a Multisim problem.
Basically I’m designing a simple push-pull inverter comprising of a transformer with a centre tapped primary winding (TS Power), a 24V DC supply and two MOSFETS.
The centre tap of the transformer is earthed and the 24V DC supply is connected to the two outer ends of the primary winding via each MOSFET.
I’ve constructed a 555 timer circuit to provide a pulse train to fire the gates of each MOSFET in turn.
My problem is that although I get the desired secondary waveform output (modified sine wave) the voltage magnitude doesn’t appear to relate to the transformer turns ratio?
Am I doing something wrong?
Many thanks for any advice in advance.

Hi Woody,
Thank you for your post and welcome to the forums. Please could you attach your circuit schematic to a reply post, I can then simulate your circuit myself and make suggestions where necessary.
Many Thanks
Jamie S.
Applications Engineer
National Instruments

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