hi
in a pcb circuit of welding machine
i have three resistances smd 4.7 ohm burnt in series with std2nb80t4 also burnt
with hole on the middle
this mosfet is connected on primary of an transformer and it seems take dc voltage
how can i calculate the watts of smd resistances to be sure i have choice the right value
can i take from an older pcb smd resistance with the same size?
is right ?
in a pcb circuit of welding machine
i have three resistances smd 4.7 ohm burnt in series with std2nb80t4 also burnt
with hole on the middle
this mosfet is connected on primary of an transformer and it seems take dc voltage
how can i calculate the watts of smd resistances to be sure i have choice the right value
can i take from an older pcb smd resistance with the same size?
is right ?
Comment