simple DC-AC inverter

[Nigel Goodwin]

Can u give me any advice on how to build a simple DC-AC inverter ? xxx

As you give no details of your requirements it seems pretty unlikely.

 

[drakesou]

As you give no details of your requirements it seems pretty unlikely.

just converting the DC from one 1.2v battery to AC output is fine. no other requirement.

 

[Nigel Goodwin]

just converting the DC from one 1.2v battery to AC output is fine. no other requirement.

That's still incredibly vauge - for a start no mention of current requirements - you also need to mention EXACTLY whay you're trying to do.

 

[drakesou]

That's still incredibly vauge - for a start no mention of current requirements - you also need to mention EXACTLY whay you're trying to do.

I am trying to build a solar energy system which can convert the energy stored in battery into AC voltage.

 

[Nigel Goodwin]

I am trying to build a solar energy system which can convert the energy stored in battery into AC voltage.

Why do you want AC - what you're asking for is still far too vague - and any solar panel that only provides 1.2V probably doesn't provide enough power to be worth bothering with.

 

[Blars]

If you don't need much power, you could use something like the discontinued LM3909. While designed as a voltage-doubling LED flasher, it could be used as an audio oscilator with enough power to drive a small speaker.

 

[blueroomelectronics]

Speaker? Where'd that come from?

That tiny 1.2V panel won't power much of anything.

 

[sahu]

That's still incredibly vauge - for a start no mention of current requirements - you also need to mention EXACTLY whay you're trying to do.

as posibol 500watt \12v useing ferrid core.also clear how can calculat ferrid transformmer turn , core area (relationship core area + o\p power)

 

[blueroomelectronics]

as posibol 500watt \12v useing ferrid core.also clear how can calculat ferrid transformmer turn , core area (relationship core area + o\p power)

Huh? What are you on about?

 

[colin55]

I gave you the circuit above, what more do you want?

 

[MrAl]

Hi all, I am doing a project and I need a simple DC-AC inverter which can convert 1.2v DC to higher AC voltage level (no matter how high is it, maybe 5v or 12v).
Can someone help ? Schematic diagram is welcome !!!
many thx !!!

Hi,

How many amps does your solar cells put out? You have to keep in mind that when you step up the voltage you step down the available current. Thus, if you have a 100ma solar cell and you boost the voltage up to 12v from 1.2v the most current you will ever get is 10ma, and probably less than that.
So the question is how much current does your solar cell put out, and how much current does your load need?
It would be better to start with a higher voltage from more solar cells if possible.

You could step up the voltage using a dc to dc converter, then convert that dc into a pulsed AC wave form, so the next question is how perfect does the AC output have to be in terms of harmonic distortion? Is a pulsed AC wave going to be ok for your application?