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any suggestion on second line? how to do it?
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any Constant current design for existing SMPS ??? IGBT based as current regulator as the charger starts charging at 50A which is C/3 so the battery voltage rises rather faster and gets to 54V output after around 45 min of 50%...
thanks. the rectifiers already have these features built in, so its not an issue. its for personal use. its not 10KVA its 3000VA SMPS for constant current stage where voltage will be brought up to 56.4 Volts during bulk stage and when when current will fall below 10A the charger is to be...
yes thanks, but microcontroller ???? isnt it too much just for charger change ? the reason i am using this topology is that i already have two SMPS supplies, i have adjusted voltages now for two stage charging i just need to switch them in sequence, constant current first at 56.4 and when...
hi.
I am designing a 2 stage battery charger for my 48V lead acid battery 150A. The first stage would use ELTEK twin power plus rectifier set at 56.4 Volts with constant charging current around 50A (C/3). Now i need a circuit which senses the current reduced to 10A (as the batteryELTE termainal...
my Lambda power supply 12V, 120A, 1500W SMPS was used to power my 12v car amplifier used in home for subwoofer.
I attatched it to charge my Car battery 12v, not realizing the SMPS has not diode protection. the SMPS kept charging the battery when i switched off the mains.When i switched on the...
Thanks. I have a confusion when i add resistor 22Ohm between the existing output transistors (Q304 and Q 305), how do i know whats their collector current , how much is going to throught the 22 Ohm resistor and how much into the base of the the output stage ??? its a bit confusing for me that...
Hi, i have two vintage sony TAN-330 Amplifiers it has simple two stage emitter follower output, with a bias current of 70mA, it is driven by STK 3102-III , the rail voltages are +/-56 Volts, The STK is driven in class A for VAS only and providiing base current to darlington driver transistors...
probably one refirdgratror, 4 Tvs lcs, 6 fansm 20 envergy saver lights, one hour brown out regularor feature, with 48V i can make 4KW one hour if get recharge time 3-4 hours. now please help me with plan. i want to get rid of my extremely inefficient 60Hz step up 4KVA tranformer on modified...
Oh . i think perhaps u might have overlooked the design objective. long brown outs here. the objective is to make a UPS for home use, the transformerless design assumption is high efficiency coupled with cost of huge 4KVA 48vdc to 220v stepped sine inverted, thats why i proposed a high frequency...
Sunnyskyguy thanks for good reply. However i must clarify that i already have these ID500A-030 i have a source which goldmine these power mosfets, diodes, BJTS, IGBTs silicone ultra fast fuses , all high wattage and values, i know that ID500A-030 is not cheap but i have some pairs of these, i...
Well then it woiuld solve a lot of problem, all i have to get an industrial single phase 3-4KVA drive controller with probably exposed bus voltage, set its frequency to 60Hz , output 220V and put on my 48Vdc to 380vDC converter. .Seems nice
Just two questions, size of capacitor for voltage...
Thanks mtwieg, can u explain how can integrate my own DC-DC converter with it ??? i mean rectification stage and inverter stage ???
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Thanks mtwieg, can u explain how can integrate my own DC-DC converter with it ??? i mean rectification stage and inverter stage ???
ok, so i decided for 2KVA inverter, with power mosfets switching at 50KHZ, is it any practicable now ?????? 48v bank input ?????? what modification i need to do with DC VFD ac motor drives????
I already have a 3KW twin power pack plus 50A, 48V ELTEK rectifier for charging, so irony is i have 48V bank, 3KVA charger, i just neeeeeeed inverter ???????? 4KVA but very high efficiency, Question, can i use high frequny pull push conversion for dc 320V and then use any industrial type motor...
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