I`m connecting to the optocoupler ILQ615 throught resistor network 2.2kohn 1/4W ( i know should be 1/2W.
supply 4 x 28V.
with all 4 inputs ON that resistor gets up 70degC.
Instead i would like to put maybe 2 or 3 1/4W resistors in series to split the load and heat generated.
3x 680 ohm 1/4w in series will do? or maybe 2x 1k 1/2w?
Any advice greatly appreciated.