i need 12V DC to 220V AC inverter circuit

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ehsanelahimirza

Joined: 24 Feb 2006
Posts: 430
Helped: 33

10 Oct 2006 22:28 hep 154 silicon diode

hi all

i need 12V DC to 220V AC inverter circuits.
plz give me with small working circuits which r not difficult to make

IanP

Joined: 05 Oct 2004
Posts: 6492
Helped: 1542
Location: West Coast

11 Oct 2006 1:20 inverter schematic watts

Take a look at the attached circuit ..
You can modify it to suit your needs, but the idea is there ..

Regards,
IanP

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laxre_06

Joined: 12 Oct 2006
Posts: 22

13 Oct 2006 3:13 12vdc to 220vac inverter

Have you ever wanted to run a TV, stereo or other appliance while on the road or camping? Well, this inverter should solve that problem. It takes 12 VDC and steps it up to 120 VAC. The wattage depends on which tansistors you use for Q1 and Q2, as well as how "big" a transformer you use for T1. The inverter can be constructed to supply anywhere from 1 to 1000 (1 KW) watts.

Schematic

This is a schematic of the Inverter

Parts:

Part

Total Qty.

Description

Substitutions
C1, C2 2 68 uf, 25 V Tantalum Capacitor
R1, R2 2 10 Ohm, 5 Watt Resistor
R3, R4 2 180 Ohm, 1 Watt Resistor
D1, D2 2 HEP 154 Silicon Diode
Q1, Q2 2 2N3055 NPN Transistor (see "Notes")
T1 1 24V, Center Tapped Transformer (see "Notes")
MISC 1 Wire, Case, Receptical (For Output)

Notes:

1. Q1 and Q2, as well as T1, determine how much wattage the inverter can supply. With Q1,Q2=2N3055 and T1= 15 A, the inverter can supply about 300 watts. Larger transformers and more powerful transistors can be substituted for T1, Q1 and Q2 for more power.

2. The easiest and least expensive way to get a large T1 is to re-wind an old microwave transformer. These transformers are rated at about 1KW and are perfect. Go to a local TV repair shop and dig through the dumpster until you get the largest microwave you can find. The bigger the microwave the bigger transformer. Remove the transformer, being careful not to touch the large high voltage capacitor that might still be charged. If you want, you can test the transformer, but they are usually still good. Now, remove the old 2000 V secondary, being careful not to damage the primary. Leave the primary in tact. Now, wind on 12 turns of wire, twist a loop (center tap), and wind on 12 more turns. The guage of the wire will depend on how much current you plan to have the transformer supply. Enamel covered magnet wire works great for this. Now secure the windings with tape. Thats all there is to it. Remember to use high current transistors for Q1 and Q2. The 2N3055's in the parts list can only handle 15 amps each.

3. Remember, when operating at high wattages, this circuit draws huge amounts of current. Don't let your battery go dead Smile

.

4. Since this project produces 120 VAC, you must include a fuse and build the project in a case.

5. You must use tantalum capacitors for C1 and C2. Regular electrolytics will overheat and explode. And yes, 68uF is the correct value. There are no substitutions.

6. This circuit can be tricky to get going. Differences in transformers, transistors, parts substitutions or anything else not on this page may cause it to not function.

7. Check out this forum topic to answer many of the most commonly asked questions about this circuit: 12 - 120V Inverter Again. It covers the most common problems encountered and has some helpful suggestions.

roykyn

Joined: 15 Sep 2006
Posts: 254
Helped: 7

16 Oct 2006 21:12 12v to 220v inverter circuit diagram

hey use a lower voltage high current transformer....i think since u r using 12v ...use a 12 -0 -12 transtormer with high current rating like 5-10 amps....now use the secondary to step up voltage...always remember the power remains the same only the parameters voltage and current changes.....

evelyn

Joined: 01 Jan 2007
Posts: 9

11 Jan 2007 10:01 12dc to 220ac

Hello!! can someone pls tell me if this inverter schematic diagram is a working diagram>? does it produce sinewave? and how much watts it produce>?

ashad

Joined: 28 Mar 2006
Posts: 307
Helped: 9
Location: Singapore

12 Jan 2007 15:59 ac inverter circuit

u visit the following web site i uploaded then circuit

www.electronics-lab.com/projects/power/033/index.html

evelyn

Joined: 01 Jan 2007
Posts: 9

12 Jan 2007 16:56 dc to ac inverter schematic

haf seen tis diagram before. but dunno if this diagram works. haf u tired it before? and how to convert to sinewave?

ehsanelahimirza

Joined: 24 Feb 2006
Posts: 430
Helped: 33

16 Jan 2007 21:25 circuit schematic 12v 220v

none of these is a sin wave generator

theseare square wave generators

i made one and it worked also but

the problem i got that due to heating effect components (capacitors,resistors)were lost

resisitors can be replaced by high valkued but dont know how to save capacitor fom burning

nguyennam

Joined: 06 Sep 2006
Posts: 459
Helped: 28

18 Jan 2007 12:49 scematic inverter 12v to 220v

You can go to this webpage for DC-AC sinewave inverters:
http://www.electronics-lab.com/forum/index.php?PHPSESSID=3a4412b4526cc9525ad26b2f0fdccffc&topic=471.msg1949

That I included in this thread:
http://www.edaboard.com/viewtopic.php?p=765941#765941

nguyennam

eanic

Joined: 18 Dec 2006
Posts: 55

01 Feb 2007 9:49 12vdc to 220vac

hello all.
my idea. small circuit easy.

_______________________
http://eanic.blogspot.com

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eanic

Joined: 18 Dec 2006
Posts: 55

08 Feb 2007 6:46 12v dc to 220v ac

hi tayyabpak,

You try here circuit inverter 100W (very easy too).

http://circuit-electronic.blogspot.com/2007/02/inverter-12v-to-220v-100w.html

goog luck. Very Happy

tayyabpak

Joined: 08 Feb 2007
Posts: 1

09 Feb 2007 6:38 12v inverter circuit

Dear eanic,
The link you have indicated is not working. Can you suggest me an easy approach to build an inverter 12VDC-220VAC 250W. Please assist me in this regard with thanks for your early responce.

dharam

Joined: 21 Feb 2007
Posts: 4

22 Feb 2007 9:30 12 to 220 inverter circuit

ehsanelahimirza wrote:

hi all

i need 12V DC to 220V AC inverter circuits.
plz give me with small working circuits which r not difficult to make

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eanic

Joined: 18 Dec 2006
Posts: 55

12 Apr 2007 4:59 12v 220v inverter circuit

dear tayyabpak,

go to link http://www.edaboard.com/viewtopic.php?p=816970#816970

Very Happy

babatundeawe

Joined: 12 Apr 2007
Posts: 104
Helped: 2
Location: NIgeria

12 Apr 2007 6:32 inverter 12v to 220v 1000 watts schematic diagram

ehsanelahimirza wrote:

hi all

i need 12V DC to 220V AC inverter circuits.
plz give me with small working circuits which r not difficult to make

re: i have tried my hand on this circuit and i found it alright. the frequency is very stabl

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E-design

Joined: 01 Jun 2002
Posts: 947
Helped: 68

12 Apr 2007 7:10 12vdc to 220vac converter

Do you have the circuit values? The IC's looks like a 4060, 4013 and 4047 but what is rest of the values?

jamesj

Joined: 07 Apr 2007
Posts: 4

16 Apr 2007 4:36 220vac inverter

Have any of these been tried at 110-120 voltages?... And...
What would I need to do to make it 110-120volts? (use in USA)

Thanks
James

babatundeawe

Joined: 12 Apr 2007
Posts: 104
Helped: 2
Location: NIgeria

24 Apr 2007 16:01 12v to 240v inverter circuit diagram

jamesj wrote:

Have any of these been tried at 110-120 voltages?... And...
What would I need to do to make it 110-120volts? (use in USA)

Thanks
James

all you have to do is to change the transformer. either you buy 12-0-12 to 120v or you wind one yourself. the remaining circuits and components are ok. just change the transformer. goodluck pal

Added after 5 minutes:

E-design wrote:

Do you have the circuit values? The IC's looks like a 4060, 4013 and 4047 but what is rest of the values?

quite sorry that i cant really produce the value of the rest of the component but i assure i will dig down my library and upload it or i get you the link on the web. i guess you like the design. very good design it has a stable frequency.
have fun
later

Added after 28 minutes:

E-design wrote:

Do you have the circuit values? The IC's looks like a 4060, 4013 and 4047 but what is rest of the values?

ok i got the values of the rest of parts

Part List

R1=10Mohms C4=10uF 16V IC2=4013
R2=100ohms C5=47uF 16V IC3=4047
R3=1.2Kohms C6=470nF 400V CR1=3.2768 MHZ crystal
R4=560Kohms D1=5V6 0.4W T1=220Vac/2X10V 2X2.2A *see text
R5-6=2.2Kohms D2-3=47V 1W F1=5A Fuse
R7-8=56 ohms 5W Q1-2=BS170 F2=0.25A Fuse
CX=22pF trimmed capacitor Q3-4=BD139 L1=1H smoothing choke
C1-2=22pF ceramic Q5-6=BD249
C3=8.2nF 100V MKT IC1=4060

or you can visit the site directly

http://users.otenet.gr/~athsam/12vdc_to_220vac_converter.htm

E-design

Joined: 01 Jun 2002
Posts: 947
Helped: 68

25 Apr 2007 19:58 12v to 220v circuit

Looking at this design more closely, something’s bothers me.

The designer uses a crystal for an accurate 50Hz trigger reference but then uses the 4047 in monostable mode with the on-time on Q determined by a RC constant? As it stands every time the MS is triggered by the 50Hz clock, the Q output will be high for ≈11.4mS. The complementary Q-BAR will be low for this time. About (20-11.4)mS later the MS gets triggered again and the cycle repeats.

Although it will results in a stable 50Hz output to the drivers, it will not provide or guarantee a symmetrical high-time output on Q and Q-BAR. This may result in a flux imbalance in the transformer core over time, leading to saturation and possible transistor failure due to core saturation.

There is already a 50Hz complementary signal with 50% duty cycle available from IC2A (pin 1,2). Why not use that as the drive signal? Maybe I am missing something and someone will point it out, but this is what I get from this circuit.

abc_abc

Joined: 19 May 2006
Posts: 8
Helped: 1

03 May 2007 1:29 dc to ac inverter circuit

babatundeawe wrote:

ehsanelahimirza wrote:

hi all

i need 12V DC to 220V AC inverter circuits.
plz give me with small working circuits which r not difficult to make

re: i have tried my hand on this circuit and i found it alright. the frequency is very stabl

what is the transformer rating, i mean what is primary and secondary voltage.

ashad

Joined: 28 Mar 2006
Posts: 307
Helped: 9
Location: Singapore

07 May 2007 11:16 inverter circuit 12v value

go to electronics lab u will find tested circuit .....

http://www.electronics-lab.com/projects/power/033/index.html

very cheap and easy to built

aman85

Joined: 09 May 2007
Posts: 1

11 May 2007 10:18 12v 120v inverter schematic

hye all there...

i need a three phase inverter schematic diagram for my final year undergraduate project...

input: 12VDC
output: 240VAC
freq:50Hz

can anybody help me..plz...
i'm doing a Grid-tie systems from the solar energy

thanks a lot...

jaya000

Joined: 02 Jan 2007
Posts: 139

17 May 2007 19:45 12vdc to 220vac 250w

Here is an article in luanguage unknown to me. But circuit will be useful. if it is 220V then it must be single phase as in my country. otherwise u can modify as required.

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Meridian

Joined: 19 Apr 2007
Posts: 321
Helped: 17
Location: Ontario, Canada

23 May 2007 17:55 12v to 220v inverter schematics

tayyabpak wrote:

I tried the link and it IS working in good order. Perhaps you can try again...
http://circuit-electronic.blogspot.com/2007/02/inverter-12v-to-220v-100w.html

ewerebellatok

Joined: 11 Dec 2007
Posts: 3

07 Jan 2008 3:02 hep silicon diode

I have problem with the transformer..
how to connect transformer?
can I used 220V/12V transformer to get 220V from 12V input?What I mean if I connect input 12V to 12V that transformer..
or I only can used 12V/220V transformer?
or 12V/220V transformer is same with 220V/12V transformer??

catur_3414

Joined: 04 Jan 2008
Posts: 39
Helped: 1

08 Jan 2008 5:18 ac inverter design

if you connect 220 V ac voltage to 220 v terminal (in 220 to 12 transformer) you get 12 Volt voltage in 12 terminal. but if you connect 12 V ac to 12 v terminal (in the same transformer) you get 220 volt voltage in 220 terminal. 12V to 220V transformer is same with 220 to 12 v transformer

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08 Jan 2008 5:18 Ads

ewerebellatok

Joined: 11 Dec 2007
Posts: 3

08 Jan 2008 9:53 12volt dc too 220volt ac

step down transformer can be use for step up transformer or not???
It is same between step down and step up transformer??
I want to used step down transformer 240 to 12 V as a step up transformer for 12V to 240V, which I connect It oppositely.

catur_3414

Joined: 04 Jan 2008
Posts: 39
Helped: 1

08 Jan 2008 11:53 12volt dc to220vac

step down transformer can be use in step up transformer. is your transformer labelled with 0, 110, 220 and 240 in primary and 6, 12, CT, etc in secondary?
if you want this transformer to be step up transformer, just connect the 12 V ac voltage in 12 labelled terminal and its produce 220 volt between 220 and 0 labeled terminal.