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12vDC to 220vAC 100watts inverter

Quick & Dirty all purpose DC to AC inverter

--To see the original large image click on the [i] located on the upper left corner of each pic, once it opens click on the link : [original file: (2040x1540) 50 KB] that is located underneath the pic. This will open the original big file.

42 comments

1-40 of 42

May 10, 2012. 11:15 AMWild Hunter says:

Hello Nickk,

What would be the voltage rating of both the polar capacitors?
And would this voltage rating of both the capacitors remain same as we increase the output power rating?

May 10, 2012. 11:26 AMWild Hunter says:

Please also tell me that about the
1- Vcc selection for higher watts is same as was in your previous design?
2- The transformer center tape winding selection for higher power is same as
it was in your previous design?
3- Is the selection of Amp for transformer for higher power is same as your
previous design?

Mar 16, 2012. 10:32 PMrameshbapuarr says:

Hi nick What is the value of D1

Jan 7, 2012. 10:17 AM

HARRIS747 says:

Hello,

Can anybody help me please, I cannot read the comoponent specs on the jpg pictures. Numbers are very small, How do you do ? I am missing something ?

Thanks in advance for your help.

Best regards,
Horacio

Jan 31, 2012. 12:13 AMnickk (author) says:

--To see the original large image click on the [i] located on the upper left corner of each pic, once it opens click on the link : [original file: (2040x1540) 50 KB] that is located underneath the pic. This will open the original big file

Jan 31, 2012. 1:55 PM

HARRIS747 says:

Thanks very much Nickk !

Now I will start asap !

Kind regards,
Horacio

Jul 9, 2010. 2:13 AMvaleso says:

helo nickk thanks for your precition about the kind of battery to use but i still have another pre-ocupation can the current produce by the inverter be use to charge the battery?that is like a closed cycle.

Jul 11, 2010. 10:02 AMnickk (author) says:

No it doesn't work, there is power loss in the form of heat generated by the power transistors that will eventualy empty your battery

Dec 28, 2011. 2:09 PMBassem Adel says:

hi nickk i'm in Don Bosco school in Egypt our project this year is to make an inverter version 250 watt we use it to transform from 12 Dc(come from 2 solar panells) to charge a bettary ..so to make it have i to use 6 transistors pnp?

Dec 10, 2011. 11:50 PMaashay007 says:

can i use this for el wire ? or can you give me source to another one for that purpose ?

Nov 23, 2011. 4:31 AMza-experimenter says:

Thanx for the awesome instructable!
Am really looking forward to builing my own inverter!!

Aug 25, 2010. 1:53 AManalyndalin says:

nick thank you very much for this very good circuit, we build it and perfectly working this very helpful to us to pass our subject... god bless...

Nov 22, 2011. 10:15 AMnickk (author) says:

Feb 3, 2011. 2:53 AMvinnu369 says:

hiii
gud eveng
i am vinil
i am doing my BE in electronics
can u send me an 100w inverter circuit which u got perfect output

here is my mail id
vinnu3692009@gmail.com

Nov 22, 2011. 10:16 AMnickk (author) says:

it is already online, can't you see it ?

Jul 6, 2011. 6:14 AMkarthim09 says:

hi vinnu,

i saw the circuit of 12vDC to 220vAC 100watts inverter in instructable. if you hold the circuit for that one.if possible please send me.

my mail id is mkarthik.krthk@gmail.com

Nov 11, 2011. 1:05 AMdivinewrath00 says:

sir can i use 9vDC supply and not 12vDC and still have the same output of 220vAC/100W?

Nov 22, 2011. 10:14 AMnickk (author) says:

you have to change the transformer to 18/220 v center tapped

Oct 21, 2011. 8:14 AMtodo123 says:

hey nickk, can you give me the names and parts? so i can order them fast and easily.

Jul 15, 2011. 7:58 AMraktim.live says:

is the jumper is necessary? can i use mosfet in the power stage instead of transistor?

Aug 22, 2010. 6:33 PManalyndalin says:

i mean, i used the t1 for charger circuit separated circuit from inverter. it is possible? thank you.

Aug 21, 2010. 12:42 AManalyndalin says:

hi nick, i would like to add a charger in this circuit, can i also use the T1 transformer for the charger? thank you.^ ^

Aug 22, 2010. 12:50 AMnickk (author) says:

no, to charge a 12v battery you'll need 13.5v not 12v

Aug 21, 2010. 10:04 AManalyndalin says:

hi nick, what is the value of R1 for 60Hz the value of D1 and the voltage value of capacitors? please reply asap coz i built this inverter for my school project but i don't know what are the components value that i mentioned. thank you very very much.

Aug 22, 2010. 12:49 AMnickk (author) says:

for 60Hz : replace R1 with 39K and C3 with 0.1uF metalized film 5% tolerence, use 25v caps for C1 and C2

Jul 20, 2010. 10:22 PMyeng says:

sir; CD4047 is not available in my place,. is there any substitution for this? many thanks..!

Jul 11, 2010. 5:53 AMyeng says:

Hi sir: If I would make up to 3000 watts with this circuit, do I need to change the transformer and the input voltage like what you did in your PWM version? And is it ok f I use 39K carbon resistor for R1 instead of 250K variable resistor?..can i use 2n3773 as replacement of 2n3055?..tnx..!!

Jul 11, 2010. 10:07 AMnickk (author) says:

hello, yes go by the table of the PWM for best results and efficiency. i don't know if 39k will give you 50Hz, try it. Yes use 2n3773. Regards

Jul 9, 2010. 2:17 AMvaleso says:

then about the 2ns and the tip is the current of the battery not going to burn it since the 2n3055 seen from my datasheet can support 15 amp?thanks.

Jul 5, 2010. 3:45 AMvaleso says:

helo nickk if you are using a 12v 70 amp batery for how long can this circuit serve as backup thanks

Jul 5, 2010. 12:52 PMnickk (author) says:

Hello, it depends on the battery type itself, gel batteries are the best for inverters since they are "deep discharge" while lead acid batteries "car battery" are not the best choice for inverters because they are designed to discharge rapidly into the starter of a car. Anyway to generate 1Amp of 220v you will be draining like 8 to 10Amps of 12v, a 70Amp (acid) battery will drop to 11volts once you drain 25% of its power and becomes useless, this means (70amps x 25% = 17.5 amps / 8 =2:20Hrs) This inverter is 100w = 0.50 amp so i guess like 4 Hrs Gel batteries are x 2 in performance.

Feb 23, 2010. 1:37 AMcoolfordy says:

hi has anyone built this and does it work because i would have to order my parts in $$$ :( but if it works it would be great. thanks nickk great simple little inveter

Mar 19, 2010. 3:58 PMnickk (author) says:

build it, you will be surprised how effective it is. i am driving a 3000 watts inverter with this little thingy !

Dec 8, 2009. 5:49 AMeffendy says:

Hi nick What is the value of D1

Oct 9, 2009. 5:15 AM05birbel says:

hi is it posible to draw more amps from the 12v supply if i was to put a 1-100 transformer as it would be quite low??? thanks

Aug 3, 2009. 2:05 AMjtg1120 says:

hi! nick I saw your design in slide show but I can not download your diagram to analyze.

Aug 4, 2009. 3:10 AMnickk (author) says:

hi, click on the image and it will open in its original big size

Jul 11, 2009. 3:09 PMShadowCowz says:

and one more question would i be able to change the transformer to a 24v/120v