baileychic
Advanced Member level 3
SMPS Battery Charger using PIC18F26K22 - Transformer current calculation
I am converting 250V AC max to DC and so, max DC to SMPS transformer is 250 * 1.4142V = 354V DC
My SMPS transformer secondary output voltage is 16V and I will get 16 - 1.4 (diode drop) = 14.6V for boost charging of the battery.
I have calculated the transformer specifications.
No, my question is, is the below calculation correct for SMPS transformer primaty current rating ?
I need 10A charging current for battery so that with same SMPS battery charger I can charge 10Ah to 100Ah batteries.
Vp/Vs = Is/Ip
354V/16 = 10/Ip = 22.125
Ip = 10 / 22.125 = 0.452A
What SWG wires can I use for 10A and 0.452A transformer winding currents ?
I am converting 250V AC max to DC and so, max DC to SMPS transformer is 250 * 1.4142V = 354V DC
My SMPS transformer secondary output voltage is 16V and I will get 16 - 1.4 (diode drop) = 14.6V for boost charging of the battery.
I have calculated the transformer specifications.
No, my question is, is the below calculation correct for SMPS transformer primaty current rating ?
I need 10A charging current for battery so that with same SMPS battery charger I can charge 10Ah to 100Ah batteries.
Vp/Vs = Is/Ip
354V/16 = 10/Ip = 22.125
Ip = 10 / 22.125 = 0.452A
What SWG wires can I use for 10A and 0.452A transformer winding currents ?