Scientifically speaking, the transformer in an inverter must have a 1:19 turn ratio in order to convert 12V DC to 220V AC. The inverter works by switching back and forth the direction of the DC input very quickly to complete the DC to AC conversion.
[pdf] This article reviews five top 12V to 220V power inverters featuring various power capacities, safety protections, and smart features suitable for different needs. Below is a summary table highlighting key features of the selected products for quick comparison. Check Price on Amazon
[pdf] Oscillator Design:An astable multivibrator can be used as an oscillator. Here an astable multivibrator using 555 timeris designed. We know, frequency of oscillations for a 555 timer in astable mode is given by: f = 1.44/(R1+2*R2)*C where R1 is the resistance.
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