In my previous post, I share to you guys about the 12V to 220V inverter schematic. This
time I would like to share again about inverter, but this time it’s how to make 12V to 220V inverter. The
main component of this small voltage converter to transform 12VDC to 220VAC is
the CMOS 4047. We will used this CMOS 4047 to stable the multi-vibrator, at
pins 10 and 11 will have a symmetrical rectangular signal (square wave) which
is amplified by 2 Darlington transistors and finally reach the secondary coil
of mains transformer (2x10V/60W).
Below are the videos presentations of the comparison between
without load and with load.
Video Presentation 1 – without load
Video Presentation 2 – with load (light bulb)
With the help of P1 the output frequency can be adjusted between 50Hz to
400Hz. Although this is not part of any professional dc ac converter it
can be used quite effective on some home appliances. Be aware that the
output signal is square and not sine wave. So you cannot use it for
powering TV, Laptops, monitors. Use it only for lighting, power tools
and other non-expensive equipment.
Below is the circuit schematic of the converter in 60 Watts from DC to AC.
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