Inverter Circuit 12V DC to 230VAC Sine Wave

[nitrojunx]

thnks

 

[hassan1980]

Hi, All

Did anyone try to make inverter depending on mosfet power transistors?

 

[Kasamiko]

Here is the charger, we assembled this circuit seperatly for charging 12V 250AH battery with a current of 30A max (15.1V). set the float current 1A

we used a stack of eight 2N3055 transisters with 0.1ohm 10watt emitter resistor

Sasi,

I just cant find a 47 Ohms trimmer used for FLOAT adjustment for this charger..the lowest value available in our place is 100 Ohms..
Any idea how can I modify it to used 100 Ohms trimmer?

See attached image below..

Thanks

rhonn 

 

[kachew]

hi to all,

  actually i am also interested in all inverter project and i read all the posts by you guys but i have problem to download the shcematic... :-[ can anyone help me?  ;D if u guys have the schematic can send to me by emails ? thanks i curently do a reserch on the inverters hope you guys can help me
this is my emails adds [email protected]

 

[audioguru2]

Hi Kachew,
A sinewave inverter schematic was posted that was a function generator IC making a sinewave that was amplified by a linear audio amp then stepped up with a transformer. because its amplifier is linear, it wastes a lot of power as heat.

 

[acdc1]

Hello Guyz,

why cant i download any crts that  posted here,im desperatly in need of an inverter  above 1kv

ACDC

 

[ante1]

I couldn’t find any inverter for >1000Volts anywhere in the archives, are you sure you have seen it on E-Lab?

 

[kachew]

Hi Kachew,
A sinewave inverter schematic was posted that was a function generator IC making a sinewave that was amplified by a linear audio amp then stepped up with a transformer. because its amplifier is linear, it wastes a lot of power as heat.

hi audioguru,
did u all still continue on the project? i mean do you all still make any modification on the sinewave inverter? thanks

 

[acdc1]

Sorry Annte its Above 1000W

 

[kachew]

hi i had been read all posts of the inverter ....but i cant dl the one with using the PWM for the inverter can anyone pls send me the link so i can hav a look on the circuit ...thanks ;D ;D

 

[kachew]

the inverter i need to do is with all this spec:

1) input voltage 10-15V dc
2) lower input volatge warning 10.5V DC
3) lower voltage protection : 10V DC
4) static current: 0.5a
5) output voltage :220V
6) output freq: 50HZ
7) output wave: modified sine wave
8) surge capability : 300W
9) continous power : 150W
10) efficiency >90%
11) output overloading proctection :150W
12) high tempreture protection

can i use the inverter with the square wave output ( that is done by kasamiko and audioguru) and filter it (using low pass filter) to be sine wave inverter?
can anyone suggest anything to be modified from my circuit attached?
thanks

 

[audioguru2]

can i use the inverter with the square wave output ( that is done by kasamiko and audioguru) and filter it (using low pass filter) to be sine wave inverter?

I don't know how to filter such a high power circuit. Some UPS's use a custom-made "ferro-resonant" transformer and have a sine-wave output.

can anyone suggest anything to be modified from my circuit attached?

You didn't attach a circuit here. You attached a circuit without part numbers in another forum.

 

[ante1]

1000W = 1kW
1000V =  1kV

 

[kachew]

dear audioguru,
so sorry..hehe...i got confused since i enter so many inverters forum....this is the circuit i meant...so anyone can suggest how to modify this circuit?

 

[kachew]

so sorry here i attach the part num too hehe...
R1=10Mohms
R2=100ohms
R3= 1.3kohms
R4=5.60kohms
R5&R6=2.2Kohms
CX=22pF trimmed capacitor
C1&C2=22pF ceramic
C3=8.2nF 100V MKT
C4=10uF 16V
C5=47uF 16V
C6=470nF 400V
D1= 5V 0.4W
D2 & D3= 47V 1W
Q1-Q2=BS170
IC1=4060
IC2=4013
IC3=4047
CR1=3.2768MHZ crystal
T1=220ac/2X10V 2X2.2A
F1=5A fuse
F2=0.25A fuse
L1=1H smoothing choke
my inverter is use for small application such as travel charger and for laptops
i was told to make modification on this circuit..can anyone suggest how can i improve the circuit?
;D

 

[transapax]

hello nura,
                i would very much appreciate it if you can post the complete diagram of the sg3525a inverter circuit diagram by mr. bashin as i cannot lay my hand on the vol-19 of efy project. you can still send it to me on the on [email protected]. thanks

 

[faizanbrohi]

hey also send a mail at [email protected] or [email protected]

 

[grateful]

Hi,audioguru
i'm interested in constructing a pure sinewave inverter. Do u know any books that talk about how to design this kind of inverter?
the ferro-resonant transformer that u mean is it same as the ferromagnetic transformer ???

 

[audioguru2]

Hi,audioguru
i'm interested in constructing a pure sinewave inverter. Do u know any books that talk about how to design this kind of inverter?

I don't know about any books.
Make a very hot linear output stage, a cool but complicated PWM output stage or use an expensive ferroresonant transformer at the output of a square-wave output stage.

the ferro-resonant transformer that u mean is it same as the ferromagnetic transformer ???/quote]
Google has many links to explanations and sales of ferroresonant transformers.

 

[acdc1]

Guyz,

Chk it out a nice peace of work

http://w5jgv.com/inverter/index.htm

could any one see a way to devolop it further

ACDC