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 12/120V inverter again
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kivdenn
Nobel Prize Winner

Uganda
535 Posts

Posted - Jun 11 2008 :  10:23:19 AM  Show Profile  Reply with Quote
So what do you mean? is the circuit OK or NOT? Thanks
Dennis
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audioguru
Nobel Prize Winner

Canada
4214 Posts

Posted - Jun 11 2008 :  12:03:54 PM  Show Profile  Reply with Quote
quote:
Originally posted by kivdenn

So what do you mean? is the circuit OK or NOT? Thanks
Dennis


Juan corrected the errors on his schematic so it should be fine.
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kivdenn
Nobel Prize Winner

Uganda
535 Posts

Posted - Jun 14 2008 :  03:04:13 AM  Show Profile  Reply with Quote
How can I modify this for 24V and 48V battery outputs
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audioguru
Nobel Prize Winner

Canada
4214 Posts

Posted - Jun 14 2008 :  3:36:41 PM  Show Profile  Reply with Quote
Juan's circuit can be completely re-designed to work from 24V or 48V.
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JUAN DELA CRUZ
Mad Scientist

Philippines
476 Posts

Posted - Jun 15 2008 :  01:46:47 AM  Show Profile  Reply with Quote
quote:
Originally posted by kivdenn

How can I modify this for 24V and 48V battery outputs



Hi Dennis...

Why will you need to modify the MS-wave inverter for 24V/48V???
.......to increase the output of the MS-wave inverter???

I think you just 'arrange your battery bank in parallel' (add a Power mosfets or just use better mosfet likewise change your Xformer to handle huge current) to increase the output of the MS-wave inverter.

Hope it helps you....

juan dela cruz
Penniless INVENTOR

Edited by - JUAN DELA CRUZ on Jun 15 2008 02:09:13 AM
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kivdenn
Nobel Prize Winner

Uganda
535 Posts

Posted - Jun 16 2008 :  07:02:37 AM  Show Profile  Reply with Quote
quote:
Originally posted by audioguru

Juan's circuit can be completely re-designed to work from 24V or 48V.


Please help me and show me how to do it because I have always tried to do it but the fets blow on each power on. thanks
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steven
New Member

China
1 Posts

Posted - Jun 17 2008 :  11:46:22 AM  Show Profile  Reply with Quote
hi,i have a question wanna to ask upstairs,what's the friquency(it seems only 0.5Hz)?what do you wanna to use for? your input fuse is 5A,but your switching transistor is 3055*2? How many Watt do u wanna to output? i am engineer for power supply, i think i can help u to complet this case.
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pebe
Nobel Prize Winner

United Kingdom
1078 Posts

Posted - Jun 17 2008 :  12:47:50 PM  Show Profile  Reply with Quote
quote:
Originally posted by steven

hi,i have a question wanna to ask upstairs,what's the friquency(it seems only 0.5Hz)?what do you wanna to use for? your input fuse is 5A,but your switching transistor is 3055*2? How many Watt do u wanna to output? i am engineer for power supply, i think i can help u to complet this case.

Which circuit are you asking about?
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kivdenn
Nobel Prize Winner

Uganda
535 Posts

Posted - Jun 18 2008 :  04:45:00 AM  Show Profile  Reply with Quote
I think he means my 24V/48V inverter circuit. The frequency is 50Hz and the output is determined by the transformer size.Dennis
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kivdenn
Nobel Prize Winner

Uganda
535 Posts

Posted - Jun 19 2008 :  04:05:22 AM  Show Profile  Reply with Quote
Hullo Juan this modified sine wave inverter has failed to run my fridge yet the fridge is rated 83Watts and the inverter is producing over 1000VA because it it using a 30Amp transformer and 8 mosfets of 50amps each paraleled on each chanel of the oscilator. Why?
Dennis
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JUAN DELA CRUZ
Mad Scientist

Philippines
476 Posts

Posted - Jun 21 2008 :  03:50:28 AM  Show Profile  Reply with Quote
[quote]Originally posted by kivdenn

Hullo Juan this modified sine wave inverter has failed to run my fridge yet the fridge is rated 83Watts

Hi Dennis...
What M.S-wave inverter are you refering with????.....
........my M.S.-wave Inverter???


and the inverter is producing over 1000VA because it it using a 30Amp transformer and 8 mosfets of 50amps each paraleled on each chanel of the oscilator. Why?

My M.S-wave INVERTER was rated '500W OUTPUT' only not 1000W. It uses '1000W' transformer from old microwave oven. I remove the secondary winding (rated 2000V) & rewound it for my primary winding w/ centapped (rated 12V-0V-12V/ 105Amperes using #3 AWG magnetic wire).
I used 'two pairs' of IRFZ44 Mosfet to obtain 500W output.
You can increase its output power by using better Power mosfets, but,
........ be sure to use batteries (paralled) & transformer(high rated power in WATTs) that can handle your desires 'Huge output'.


..Your Fridge has a motor that needs 'high current' to start.
That's why it didn't run it 'coz its output is limited for only 500W.

juan dela cruz
Penniless INVENTOR

Edited by - JUAN DELA CRUZ on Jun 21 2008 03:52:05 AM
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j12
Apprentece

Pakistan
10 Posts

Posted - Jul 02 2008 :  1:37:37 PM  Show Profile  Click to see j12's MSN Messenger address  Send j12 a Yahoo! Message  Reply with Quote
can any 1 tell me if we r not conecting the t1 step up transformer what was the reading of the reading of circuit and what was rga right conection of 2n3055 i am confuced to conecting, or what was the right way to use the microwave transformer in this circuit
plzz help me

john
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j12
Apprentece

Pakistan
10 Posts

Posted - Jul 02 2008 :  1:38:59 PM  Show Profile  Click to see j12's MSN Messenger address  Send j12 a Yahoo! Message  Reply with Quote
can any 1 tell me if we r not conecting the t1 step up transformer what was the reading of the reading of circuit and what was rga right conection of 2n3055 i am confuced to conecting, or what was the right way to use the microwave transformer in this circuit
plzz help me

john
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audioguru
Nobel Prize Winner

Canada
4214 Posts

Posted - Jul 02 2008 :  6:23:10 PM  Show Profile  Reply with Quote
Hi John J12,
Which inverter circuit are you making?
The original project on this site with only two 2N3055 transistors does not work. A rewound microwave oven transformer won't make it work better.
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j12
Apprentece

Pakistan
10 Posts

Posted - Jul 03 2008 :  06:46:37 AM  Show Profile  Click to see j12's MSN Messenger address  Send j12 a Yahoo! Message  Reply with Quote
hi 2
i am talking about
12V to 120V Inverter


john
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