T
treez
Guest
Hello,
Our contractor has decided that we can save money on our offline 240VAC lighting product by changing the 47R resistor in the attached (partial) schematic to a non-pulse-rated 47R, 1210 resistor.
At the moment, we use a pulse rated 47R, 1210 resistor as follows…..
SG73-RT series pulse rated resistor.
https://www.koaspeer.com/catimages/Products/SG73-RT/SG73-RT.pdf
The Power pulse seen by this 47R is also attached. (..this is worst case, ie , when the mains is applied to the product at the instant of 240VAC mains peak)
Do you think such a general, non-pulse-rated resistor will have reliability problems in this situation?
The product would be switched on once per day
(LT spice simulation of the switch-ON transient attached)
Our contractor has decided that we can save money on our offline 240VAC lighting product by changing the 47R resistor in the attached (partial) schematic to a non-pulse-rated 47R, 1210 resistor.
At the moment, we use a pulse rated 47R, 1210 resistor as follows…..
SG73-RT series pulse rated resistor.
https://www.koaspeer.com/catimages/Products/SG73-RT/SG73-RT.pdf
The Power pulse seen by this 47R is also attached. (..this is worst case, ie , when the mains is applied to the product at the instant of 240VAC mains peak)
Do you think such a general, non-pulse-rated resistor will have reliability problems in this situation?
The product would be switched on once per day
(LT spice simulation of the switch-ON transient attached)