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Sir,
problem is solved i change the capaciter value ups is smooth working thanks for every thing.I send a scr charger circut . I have a problem this circut charging current limiting,i used copper shunt ,shunt leangth 13".please tell what is the actual problem
Sir,
sorry for the delay. I am trying your suggestion and some problem i remove the 9th pin to 1st pin connect resistor(R6) and load the ups the output is vibrating and a huge noice then i try solder the 47k resister(R6) 9th pin to 1st pin and try on ups no noice and smooth running any...
Sir,
Tanks for your replay . I am using this circut for ups aplication and i used resister R1 100E.Gate resister value 22E.but slow start capaciter value you advice 4.7uf to 22uf this value make slow stat mains to ups on changeover time
sir,
I have a problem my converter board and ic used osilater ic sg3525.this circut pwm regulation not properly working and change over time output volt shoot what is the problem please help me
SIR,
I have a problem my scr battery charging please help me.i used charging circut attach this mail.my problem is ,battery charging voltage setting is ok but ampear control is not properiy working .I tried this circut 24v ups, sett battery charging voltage no load condition 28v,it is ok...
sir,
I aleardy used ir2110 ic for mosfet driving.But i have a doubt ,i used 3 mosfet per channel,how amplify 2110 gate drive (6nos mosfet per channel) .please help me
how design 500va/12v(Primary volt-230v,secondry volt-12v-0-12v,frequancy 50z) inverter transformer design help?
1, how calculate primary current?
2, how calculate core area?
3, how calculate core loss?
4, how calculate secondry current?
please help me ? I am waiting your valid replay.
sir,
I am new in pic programming.I am using pic 16f877a crystel-20mhz and connected led portb (this is out put).i am using timer0 delay for led on off (RB7,RB6 connected led).iam using mplab icd3 for programming.This my timer0 first program please help me
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