dc to ac inverter circuit diagram and or pcb needed


by saad ahmed khan
Tags: circuit, diagram, inverter
saad ahmed khan
saad ahmed khan is offline
#1
Mar4-06, 05:32 AM
P: 47
hello everyone
i need a circuit diagram or printed circuit board for a dc to ac inverter
that will convert 12vdc to 220v ac @ 50 Hz. the circuit should be preferably simple and easy to make. not to forget cheap
i dont want to buy one. i need the car cigarette lighter types that are small. i dont buy online because i dont trust credit cards and i cant find it on the market in my country.
oh and the circuit should also be tested
any help will be appreciated
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Cliff_J
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#2
Mar4-06, 10:52 PM
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Ok, first off this is dangerous because of the voltage levels involved, well past lethal ranges here.

Second, you're going to need a transformer and finding that is going to be much much more difficult than the inverters because its a specialty product designed to be sold to other manufacturers in large quanities or EEs for testing. Its not an item sold to the general public.

Third, if you understood what it would take to properly isolate the case you could also likely build a chopper circuit that could create the output as at least a triangular wave. With inverters, you can spend more money and get a true sinewave output so there's much less chance of interference problems on a TV or radio.

I'd say too try some specialty shops, maybe a place that assists people who would need AC power from a battery. Stateside, there are cottage industries to serve the needs of people for RV/camping that have a selection of these devices, similar ones likely exist in europe with similar voltages, maybe you would find one there.
saad ahmed khan
saad ahmed khan is offline
#3
Mar5-06, 04:42 AM
P: 47
Quote Quote by Cliff_J
Ok, first off this is dangerous because of the voltage levels involved, well past lethal ranges here.

Second, you're going to need a transformer and finding that is going to be much much more difficult than the inverters because its a specialty product designed to be sold to other manufacturers in large quanities or EEs for testing. Its not an item sold to the general public.

Third, if you understood what it would take to properly isolate the case you could also likely build a chopper circuit that could create the output as at least a triangular wave. With inverters, you can spend more money and get a true sinewave output so there's much less chance of interference problems on a TV or radio.

I'd say too try some specialty shops, maybe a place that assists people who would need AC power from a battery. Stateside, there are cottage industries to serve the needs of people for RV/camping that have a selection of these devices, similar ones likely exist in europe with similar voltages, maybe you would find one there.

well i do know of the high voltage involved
at least if i could get a circuit that can take 12V dc and put out 12V ac without changing the current i could still make the inverter work. i donot intend to run anything above 100W. also i live in pakistan not europe.
any help????please reply

biodun
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#4
Apr17-07, 08:12 AM
P: 1

dc to ac inverter circuit diagram and or pcb needed


inverter circuit diagram please
berkeman
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#5
Apr17-07, 10:26 AM
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Quote Quote by biodun View Post
inverter circuit diagram please
http://en.wikipedia.org/wiki/Inverter_%28electrical%29

And as Cliff already pointed out, be careful. If you haven't worked with AC mains voltages like 110Vrms and 220Vrms before, this is too big a project for you at this point.
chrismicro
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#6
Jan8-08, 07:39 PM
P: 4
If you are stil interested in the inverter diagrams let me know, I can't beleave the answers you got, its not such a big deal
berkeman
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#7
Jan9-08, 11:57 AM
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Quote Quote by chrismicro View Post
If you are stil interested in the inverter diagrams let me know, I can't beleave the answers you got, its not such a big deal
You can't believe that we were cautioning this person about the dangerous nature of the circuit, or there was some other problem with our replies?
chrismicro
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#8
Jan9-08, 02:08 PM
P: 4
Everybody by there right mind, know the dangers of mains power, but a inverter powered from a cars cigarette lighter socket? how dangerous can that be, the 5 amp that you can draw from the socket will give you a final power of? 5X12 = 60 watt 60/220= 27mA, it can't even kill a fly! then there is transformer loss of almost 15%, so the worst that can happen, he can get a nasty little tickle, I have overcome in my live not one, but hundreds of electrical shocks from 380 volt mains(3 fase) with no after effects and I'm still alive at 60 without any scars, the internet is flooded with diagrams of power inverters, all without any warnings, but non of you could give him a positive answer.
berkeman
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#9
Jan9-08, 04:17 PM
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Quote Quote by chrismicro View Post
Everybody by there right mind, know the dangers of mains power
Not true. Newbies in electronics and EE often do not understand the issues involved in electrical safety with high voltages. That's one reason that Underwriters Labs exists -- to provide standards and to check our design work.

Quote Quote by chrismicro View Post
but a inverter powered from a cars cigarette lighter socket? how dangerous can that be, the 5 amp that you can draw from the socket will give you a final power of? 5X12 = 60 watt 60/220= 27mA, it can't even kill a fly!
See what I mean? This is a fine example of not understanding shock hazards. It doesn't take watts of power to cause cardiac fibrulations. Please do not post rubbish like this -- you could get somebody hurt.

Quote Quote by chrismicro View Post
so the worst that can happen, he can get a nasty little tickle, I have overcome in my live not one, but hundreds of electrical shocks from 380 volt mains(3 fase) with no after effects and I'm still alive at 60 without any scars, the internet is flooded with diagrams of power inverters, all without any warnings, but non of you could give him a positive answer.
I'm glad for you that you have survived the shocks, but I have to say that the fact that you've managed to get shocked so many times makes me worry.

I have mentored many, many new EEs and students, and it is quite common for them to underestimate the dangers of electrical shock (not to mention fire, etc.) when working with voltages above SELV. It is irresponsible for you to be advocating a position where you are minimizing the dangers and the precautions that should be taken. In most companies that I'm familiar with, an attitude like that would get you shown the door.

If the original poster (OP) had said something like, "I'm familair with AC mains safety issues, and have built DC output power supplies in the past that comply with typical UL safety regulations, and now I'd like to try building a 12V-->120Vrms inverter...", then we would have responded differently. But when an apparent newbie to electronics asks what the OP asked, red flags go up, and we have to be sure that they understand the safety issues involved before we help them with the circuit concepts.
randell
randell is offline
#10
Feb26-08, 11:44 PM
P: 1
can you help me to solve my problem?^^

A 24VDC to 110VAC inverter circuit and diagram!
may problem is how to construct a circuit that the source is a DC which is 24V convert it into a sine wave or in a 110V AC. It sound easy to do but i'm only a student and seeking an advice to the people that has a kind heart.^^ please help me! it's one of may project and i don't want to failed on this subject (electronics) becoz it's may favorite subject. Those who interested to help me, just email your solutions in may email address: its louie_ian@yahoo.com and ian_devilgohan@yahoo.com. I will acknowledge your help in may project report. thanks.
david90
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#11
Feb27-08, 12:50 AM
P: 303
Quote Quote by randell View Post
can you help me to solve my problem?^^

A 24VDC to 110VAC inverter circuit and diagram!
may problem is how to construct a circuit that the source is a DC which is 24V convert it into a sine wave or in a 110V AC. It sound easy to do but i'm only a student and seeking an advice to the people that has a kind heart.^^ please help me! it's one of may project and i don't want to failed on this subject (electronics) becoz it's may favorite subject. Those who interested to help me, just email your solutions in may email address: its louie_ian@yahoo.com and ian_devilgohan@yahoo.com. I will acknowledge your help in may project report. thanks.

1. Step down by using transformer
2. Use H-bridge to recify the 24vac waveform.
3. Use caps to filter out ripples.

I'm sure there are many circuits on the net. Use infoseek.com to search.
berkeman
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#12
Feb27-08, 09:24 AM
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Quote Quote by david90 View Post
1. Step down by using transformer
2. Use H-bridge to recify the 24vac waveform.
3. Use caps to filter out ripples.

I'm sure there are many circuits on the net. Use infoseek.com to search.
No, I think the poster randell is asking about the opposite direction, from 24Vdc to 110Vac.

randell -- look at my post #5 for a pointer. Also, please read and understand the discussion about electrical safety in the rest of this thread.
ally z
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#13
Apr25-08, 03:19 PM
P: 3
Quote Quote by berkeman View Post
You can't believe that we were cautioning this person about the dangerous nature of the circuit, or there was some other problem with our replies?
also need circuit for 24-220v ac
and 48-400v 3phase /50Hz inverter
0<P<10kw
chrismicro
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#14
Apr25-08, 03:57 PM
P: 4
Quote Quote by ally z View Post
also need circuit for 24-220v ac
and 48-400v 3phase /50Hz inverter
0<P<10kw
You will not get it on this forum my friend, search for it on other sites or Google it
ally z
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#15
Apr27-08, 03:21 PM
P: 3
will do thanks chhris
quadraphonics
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#16
Apr27-08, 03:36 PM
P: 270
Not to discourage the OP (I used to work in inverter design myself), but I'd be amazed if you could manage to build a halfway-decent inverter for less than it would cost to purchase one. I understand that there are issues with the availability in his local markets, but I imagine that those same issues would arise with the specialized components needed to build an inverter. Maybe I'm wrong about that... But even still, I'd be surprised if you could get the components for less than the cost of a mass-manufactured inverter. Factoring in the time required to design, test, redesign, retest (ad nauseum), I can't really see how you could ever come out ahead financially by DIYing an inverter... if you were to fry a few high-power transistors (or a transformer) during testing/debugging, you'd be in the red right there.

Surely inverters are commercially available in India? Perhaps you could take a vacation and pick one up while you're there?
chrismicro
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#17
Apr27-08, 03:42 PM
P: 4
Quote Quote by ally z View Post
also need circuit for 24-220v ac
and 48-400v 3phase /50Hz inverter
0<P<10kw
Yes there is another problem! your human relationship
saad ahmed khan
saad ahmed khan is offline
#18
Apr28-08, 11:01 AM
P: 47
ok its been a long time since i replied..
making inverters is expensive... i just wanted to do so coz i like making stuff.

any how i got my uncle to bring me an inverter from canada so problem solved


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