Bubba Oscillator as a sine wave inverter

[johnnyblaz97]

Hi there. I'm trying to make a sine wave inverter based on "Bubba Oscillator". The output of the bubba oscillator is a nice sine wave of 50Hz and 5V (rms). The problem arises when I try to step up the voltage to 220V using a transformer. The circuit doesn't simulate and the Multisim convergence error can't be fixed. Please help. Attached below is the bubba oscillator image without the transformer and with transformer

[Sil.VI]

Hi johnnyblaz97,

I just checked that you created two different threads for the same question. Please consider the reply that is already posted on your other thread.

 Warm Regards,