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  • Adaptable 12vDC/220vAC Pure Sinewave Inverter

    Where is output voltage control section ? or this circuit doesn't need that to output continuous 220V output even we increase the load .

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    Hellow sir .........I need your help. Can i get your PCB pleasIt will be very helpful to me sir.pleas

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    yes sir i will do that...........those pic are in proteus software where i didn't get Heatsink but when my pcb will be printed i will connect two heatsink for each two set of mosfet ...... and i will connect the transformer 12-0-12 side directly to the heatsink . that just a pcb designing software version Sir. where i make some wire so thick whose are referred by you on schematic and will add huge amount of soldering lead when i will solder it. I am using mosfet here which is not like your n6277 metal....... its like the picture i gave...... so it is not possible to connect them throw heatsink as you have done. Sir is it ok?

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    Hellow sir here is the PCB of my power stage. Is it ok ? Does the connection is enough thick to give me best result sir ?

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    Sir another question, about the frequency you calculate that the resistor should be 260 k to produce 50-60 Hz but here you used 100 k constant resistor and 100 k variable resistor in series then how it can give me 260 k resistance to produce 50-60 Hz frequency . Is there anything wrong on calculation or my understanding ? Best regards Sir.

    Hellow Sir hope You are well.I am facing the same problem now also... My inverter section is ok but the voltage regulation part is not working correctly. I have used all of the componect those you referred only bc327 replaced by 1020 with correct pinout. now I am using 200 watt transformer and 30 watt battery and two IRFP250 mosfet. when i set my output voltage to 130 or around by varying 2.2k pot then if i connect a load of 5-30 watt the output voltage increases to 145-150 volt but if i set without load voltage above 130 then if i connect any load voltage dropped to 100 v or around. Such if i set the output voltage to 220 and then connect a 5 watt bulb as load the voltage droppes to 190 volt. and without feedback transformer I get 227 volt output and with feedback it is 222 volt max. w...

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    Hellow Sir hope You are well.I am facing the same problem now also... My inverter section is ok but the voltage regulation part is not working correctly. I have used all of the componect those you referred only bc327 replaced by 1020 with correct pinout. now I am using 200 watt transformer and 30 watt battery and two IRFP250 mosfet. when i set my output voltage to 130 or around by varying 2.2k pot then if i connect a load of 5-30 watt the output voltage increases to 145-150 volt but if i set without load voltage above 130 then if i connect any load voltage dropped to 100 v or around. Such if i set the output voltage to 220 and then connect a 5 watt bulb as load the voltage droppes to 190 volt. and without feedback transformer I get 227 volt output and with feedback it is 222 volt max. what is my problem sir. please help Your obedient :)

    Thanks a lot Sir I will fill up all of Your demand soon........... and will notify you about result............. but please make me sure that the 1020 transistor which i used instead of bc327 does it making any problem ? I am giving you details about two... Why you use that transistor sir........ I found some circuit online those don't use any transistor in voltage sensor section they just connect a 10 k resistor between pin 2 and 16 ..and a 100nf to pin 9 and gnd and directly connect output of feedback transformer to pin 1 after bridging the ac to dc.

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    No sir...... I gave the picture of urs and they printed it for me........... Its a printed pcb provider..........and they advertise such the way may be............. I gave them ur PCB and the make it on software and after printing the game me that pcb....... I have been charged for that...... sir

    Nope Sir........Printed by karigor electronics........... I submitted the design and they printed it for me ........... Cause i don't have those equipment to print a pcb...... :)

    No sir PCB printed by them.........

    Ok sir .....camera of my phone is so bad........ i will take some pic tomorrow and post them ............ thanks for being with me sir

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    Sir now I have replaced 2k pot with 2.2k and noticed that when the output is 130v without load if then i connect a 5 watt load its gose down for a while and instantly be 130v again .....i mean voltage is remaining same here but if i increase the load voltage droped again......... I am using a 3 Amp battery here .........is it the reason ? if i use a large battery will i get 220volt constantly ? I used a 30 amp battery also but that time i did not notice .........just then if the voltage without load was 50 then connecting a 40 watt load increases the output to 90 volt............

    Hello Sir wish you good day. actually I am trying to complete this project for few days. and finally 10 days ago I printed it on PCB and add all component those you refereed. But till the project is not complete 100%. I am giving you a large description on what I do and what is the feedback from this circuit.First of all the changes I made :1. I can't find bc327 so i used bc557/B892/1020 respectively all are pnp transistor and the much similar with bc327.2. I have used 2k pot instead of 2.2k.3. I have connect two mosfet IRF44 and the gates of each mosfet is directly connected to B1 and B2 terminal on the circuit .4.I have used a 0.6amp 220/12 transformer as the feedback transformer and a 4amp 12-0-12 /220 volt transformer as T2 ( I have tried with 300 watt trafo also... but for now jus...

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    Hello Sir wish you good day. actually I am trying to complete this project for few days. and finally 10 days ago I printed it on PCB and add all component those you refereed. But till the project is not complete 100%. I am giving you a large description on what I do and what is the feedback from this circuit.First of all the changes I made :1. I can't find bc327 so i used bc557/B892/1020 respectively all are pnp transistor and the much similar with bc327.2. I have used 2k pot instead of 2.2k.3. I have connect two mosfet IRF44 and the gates of each mosfet is directly connected to B1 and B2 terminal on the circuit .4.I have used a 0.6amp 220/12 transformer as the feedback transformer and a 4amp 12-0-12 /220 volt transformer as T2 ( I have tried with 300 watt trafo also... but for now just using 4 amp just for trial with it i am glowing a 26 watt bulb)5. I have connected 220 volt side of both transformer in parallel .Thats all i did.Problems:1. Voltage regulation not working. Normally I connected a volt meter to the output i got 213 volt using 2.2k pot...... and can't get much from it. But when i connect a 26 watt bulb voltage goes down to 107 volt only. But if i set the output voltage (without load) at 40 volt and connect the load the voltage raise up to 70 volt. And some times the voltage bounced up and down the light also bownced its glowness accordingly.Inverting part is working fine and I did not set the frequency cause I have not the equipment(oscilloscope) to do that.What is my mistake Sir ? What should I do now .I am from a village and here loadshedding is a big problem . Pleas help me to complete this project so that I can Help all of my villagers . Pleas sir.With best regards. :)

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    sir my pwm section is not working........pls help........... all others are ok.......... i just used b892 instead of bc327 ......10k variable instead of 2.2k ...all others are same as u .......but without load the output is 220v when i connect the load gradually the voltage decrease gradually...... but when i am changing the variable i have noticed that at a point the voltage without load is 60 then if i connect the load the voltage being increased....... pls help me sir

    Please Sir help me............... last 10 days i am working on it ............lastly the voltage regulation is not working ........... I wrote details in previous comment......... pls help me sir.........

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    Sir I made it ... the inverter part is working so good but the voltage regulation part is not working ......... I am having 230v as output but when i connect a 30watt bulb the voltage goes to 60v only........... and that is happaing when the feedback transformer is not connected. when i connect my feedback transformer the i get only 80 volt output but if i use 47k resistor instead of 3.9 k then i get 190v output but also then the voltage goes to down while load is connected.... what is the problem.......... i made the circuit with those component u referred just the bc327 transistor was not available in my nearest store instead of that i used bc557 first after failing i have used b892 instead of bc327 does it making the problem ......... T1 Transformer is a self made one where i ge...

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    Sir I made it ... the inverter part is working so good but the voltage regulation part is not working ......... I am having 230v as output but when i connect a 30watt bulb the voltage goes to 60v only........... and that is happaing when the feedback transformer is not connected. when i connect my feedback transformer the i get only 80 volt output but if i use 47k resistor instead of 3.9 k then i get 190v output but also then the voltage goes to down while load is connected.... what is the problem.......... i made the circuit with those component u referred just the bc327 transistor was not available in my nearest store instead of that i used bc557 first after failing i have used b892 instead of bc327 does it making the problem ......... T1 Transformer is a self made one where i get 11.5-0-11.5 if 220v is connected on primery side..... and T2 is a 12-0-12 center tapped 3amp transformer but i have used 12-0 loop only.........and in power stage i just use irf44*2 mosfet .........didn't use any other transformer or diode or resistor................ what is the problem sir..........pls help ..............pls sir

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    Sir i made it but having a little problem........ due to feedback Transformer... when i connect it the output voltage goes down to 50 volt but without it i am getting 230 volt sir. What is the fault .....should i avoid the feedback transformer ?

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    But Sir I found a previous comment of yours where somebody was asking "for a 300 watt inverter what should be the rate of current in transformer" you replied that it would be 15 amp . but now to me u r saying that it would be 25 amp ? Please sir i am so confused ....... ple make me clear....... i am asking you directly that for a 240 va Inverter what should be the transformer ratting ? 12-0-12 v 10 amp or 12-0-12 v 20 amps .......i mean if the transformer is winded with a SWG 12# and its 10 amps wire then can i expect 240va output from this transformer ?

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    Thanks a lot Sir ........ I need another help Sir, does a 15 amp rated center tapped transformer means 15 amp for each 12 volt loop ......then for two 12 volt loop is it 30 amps ? I am confused about the wattage rating of a center tapped transformer actually because a 300 VA transformer means on 220 v side it should be 300/220=1.4 amp current then on 12-0-12 side what should be the current .... will it be 300/12=25 amps or 300/24=12.5 amps ? Please help me to remove my confusion Sir . Best regards :)

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    Hello friend I need your help... I want to do all with one transformer also... how can i do. pleas contact me my facebook link is www.facebook.com/The.Sonet

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  • 250 to 5000 watts PWM DC/AC 220V Power Inverter

    Sir , Can you give me the PCB layout in pdf format pls... I need this for my house . pls sir pls

    Sir what is the rating of T1.. is it 0.5 amp in 220v side or at 12 volt side?

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  • Morshedul IslamS followed Nick_Zouein3 years ago