12V to 220V square wave inverter

Transformer turns calculation:
12DC-220AC
N=Vin(min)/Vo+VF*D/1-D
N=11/220+0.7*0.4/1-0.4
N=0.05*0.6
N=0.03
LP=n*D*D*Vin(min)*Vin(min)/2*Fsw*P0
LP=0.75*0.4*0.4*11*11/2*65000*100
LP=0.00139mH
lpK=2*100/0.75*12*0.4
lPK=55.5A
NP=LP*lpK/Bm*Ae
NP=0.000139*55.5/0.25*1000
NP=0.000294
NS=NP/N
NS=0.000294/0.03
NS=0.0098
NP=NS*N
NP=0.0098*0.03
NP=0.000294
NS/NP=33.3333
NS=4+4
NP=267
NE555 dual-channel driver:
f=1/[0.7*c1*(r1+2*r2)]
f=1/[0.7*0.000001*(1000+20000)]
f=68khz
Decorative lights:
#include
 
 
void Delay1ms(unsigned int xms) //@11.0592MHz
{
unsigned char data i, j;
while(xms)
{
i = 2;
j = 199;
do
{
while (--j);
} while (--i);
xms--;
}
}
 
 
void main()
{
while(1)
{
P0=0X80;Delay1ms(1000);P0=0X40;Delay1ms(950);
P0=0X20;Delay1ms(900);P0=0X10;Delay1ms(850);P0=0X08;Delay1ms(800);P0=0X04;Delay1ms(750);P0=0X02;Delay1ms(700);
P0=0X01;Delay1ms(650);P1=0X80;Delay1ms(600);P1=0X40;Delay1ms(550);P1=0X20;Delay1ms(500);P1=0X10;Delay1ms(450);
P1=0X08;Delay1ms(400);P1=0X04;Delay1ms(350);P1=0X02;Delay1ms(300);P1=0X01;Delay1ms(250);P3=0X80;Delay1ms(240);
P3=0X40;Delay1ms(230);P3=0X20;Delay1ms(220);P3=0X10;Delay1ms(210);P3=0X08;Delay1ms(200);P3=0X04;Delay1ms(190);
P3=0X02;Delay1ms(180);P3=0X01;Delay1ms(170);P2=0X80;Delay1ms(160);P2=0X40;Delay1ms(150);P2=0X20;Delay1ms(140);
P2=0X10;Delay1ms(130);P2=0X08;Delay1ms(120);P2=0X04;Delay1ms(110);P2=0X02;Delay1ms(100);P2=0X01;Delay1ms(100);
 
 
P0=P1=P2=P3=0X00;Delay1ms(250);P0=P1=P2=P3=0Xff;Delay1ms(250);P0=P1=P2=P3=0X00;Delay1ms(250);
P0=P1=P2=P3=0Xff;Delay1ms(250);P0=P1=P2=P3=0X00;Delay1ms(250);P0=P1=P2=P3=0Xff;Delay1ms(250);
P0=P1=P2=P3=0X00;Delay1ms(250);P0=P1=P2=P3=0Xff;Delay1ms(250);P0=P1=P2=P3=0X00;Delay1ms(250);
P0=P1=P2=P3=0Xff;Delay1ms(250);P0=P1=P2=P3=0X00;Delay1ms(250);P0=P1=P2=P3=0Xff;Delay1ms(250);
 
P0=P1=P2=P3=0x55;Delay1ms(400);P0=P1=P2=P3=0xAA;Delay1ms(400);
P0=P1=P2=P3=0x00;Delay1ms(400);P0=P1=P2=P3=0x55;Delay1ms(400);P0=P1=P2=P3=0xAA;Delay1ms(400);
P0=P1=P2=P3=0x00;Delay1ms(400);P0=P1=P2=P3=0x55;Delay1ms(400);P0=P1=P2=P3=0xAA;Delay1ms(400);
P0=P1=P2=P3=0x00;Delay1ms(400);P0=P1=P2=P3=0x55;Delay1ms(400);P0=P1=P2=P3=0xAA;Delay1ms(400);
P0=P1=P2=P3=0x00;Delay1ms(400);P0=P1=P2=P3=0x55;Delay1ms(400);P0=P1=P2=P3=0xAA;Delay1ms(400);
P0=P1=P2=P3=0x00;Delay1ms(400);P0=P1=P2=P3=0x55;Delay1ms(400);P0=P1=P2=P3=0xAA;Delay1ms(400);
P0=P1=P2=P3=0x00;Delay1ms(400);P0=P1=P2=P3=0x55;Delay1ms(400);P0=P1=P2=P3=0xAA;Delay1ms(400);P0=P1=P2=P3=0x00;
Delay1ms(400);P0=P1=P2=P3=0x55;Delay1ms(400);P0=P1=P2=P3=0xAA;Delay1ms(400);P0=P1=P2=P3=0x00;Delay1ms(400);
 
}
}