How to ... transform DC to AC?

[UTiLeeTY]

Hello dear OU members ,

... actually, I am not an electrical engineer but I would like to know your professional opinion on what (self-made) concepts for DC to AC conversion do exist and how you can build them .

Basically, what is needed:

any input DC into same(!, or even close) AC.

Many thanks for your participation
... & finally your are speeding up my open source project that way (so, we all may profit from that).

Best wishes,

UTiLeeTY

[UTiLeeTY]

power inverter, inductive or capacitive step up.
does it have to be sine?
can it can also be modified sine.
how powerful it needs to be do you want to burn a small 15 watt bulb or do you want to power your 2000 Watt oven with it.
these things are important to know before designing such a circuit because the rating of the parts is critical and it is directly related to the maximum amperage on the primary circuit.

Thank you for quick reply ,

... well, I've tought of maximum 12VDC and 1A input, which should be transformed to 12VAC ... & 'modified' to turn on/off or switch a coil which works with magnetic fields & is doing work...

But basically, that 'invertor' circuit need to work under load usually in 0.01-1V range, DC input may vary quite often.

I guess, it should run on 1:1 DC->AC power invertor, which I am aking for . Not really need to be sine waves, as long as current stays the same (as before 'inversion'; current increases are very welcome).

Thank you for your effort .

Sincerely,

UTiLeeTY

[gyulasun]

hello UTiLeeTY,

Here is a schematic, a bit similar to what microcontroller described:

http://electroschematics.com/220/12v-dc-220v-ac-converter/ 

IT works with squarewaves and you have to find a transformer which has to have a fourth winding with also a 9 to 15V output voltage, besides the 220V (or 120V) output.  Or you can wind this fourth coil onto the core yourself if you cannot find such.Or you use a second transformer to convert the 220V (or 120V) output of the first transformer back to your lower output needed.

cheers,  Gyula

[Rafael Ti]

And a little bit more complicated, but PWM , which means having sine wave output. It's based on SG3524. As for me very interesting.

http://www.instructables.com/id/250-to-5000-watts-PWM-DCAC-220V-Power-Inverter/

[UTiLeeTY]

Thank you all for really interesting recommendations ,

... but actually, I don't need more voltage out as it is coming in.

Would you, please, ... convert those circuits in way that they transform
input DC voltage into (near) same output voltage and post them ^^?

And: that idea with a transformer sounds really good ... please post diagramm .

Your help is very welcome .


Many Thanks,

UTiLeeTY