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@harshad-ukH5ww • Aug 1, 2011
LM7812 is Suitable to your requirement.shrutzhow do i design a 12V voltage regulator circuit using ic with current rating upto 45mA?
which ic is most appropriate for this?
@shrutz-u8EnEU • Aug 1, 2011
@narayana-z4W16q • Aug 1, 2011
hey why can't you use some resistance in shunt so current will be decreasedshrutzi tried to implement the circuit using the ic LM 7812 and was getting 12V but the current was exceeding 60mA.... so how can the current be reduced? is there any alternative to this or the design needs to be modified? if so please suggest the way....
@shrutz-u8EnEU • Aug 1, 2011
@ramani-VR4O43 • Aug 1, 2011
Do you want a constant voltage or current? You cannot have both. At 45 ma and 12 volts the circuit resistance will be 266.7 ohms. If your resistance is less than this you will get a higher current.shrutzbut then power loss will be more..... isnt there any alternative ic for this purpose?
@harshad-ukH5ww • Aug 1, 2011
Have a look at above Reply, Let us know what you need constant Voltage or Current?bioramaniDo you want a constant voltage or current? You cannot have both. At 45 ma and 12 volts the circuit resistance will be 266.7 ohms. If your resistance is less than this you will get a higher current.
@shrutz-u8EnEU • Aug 3, 2011
@ramani-VR4O43 • Aug 3, 2011
@harshad-ukH5ww • Aug 3, 2011
@narayana-z4W16q • Aug 4, 2011
@shrutz-u8EnEU • Aug 7, 2011
@harshad-ukH5ww • Aug 8, 2011
Do you want to charge that Battery? If you are applying more current then it will charge up in short time if less then it will take more time. remember voltage should be higher then Battery voltage.shrutzhey please can anyone tell me about the input current range required for 12v lead acid battery?
@narayana-z4W16q • Aug 8, 2011
but here appears one thing when the voltage is higher rather charging in short time it damages the battery as per my knowledgegodfatherDo you want to charge that Battery? If you are applying more current then it will charge up in short time if less then it will take more time. remember voltage should be higher then Battery voltage.
@shrutz-u8EnEU • Aug 8, 2011
@ramani-VR4O43 • Aug 8, 2011
Lead acid battery charging current is 10% of the Amp hour capacity of the battery. A 100 amp hour battery needs 10 amps charging current.shrutzhey please can anyone tell me about the input current range required for 12v lead acid battery?
@shrutz-u8EnEU • Aug 9, 2011
