eem2am
Banned
i use CMB0207 Melf resistor of value 22 Ohms (1W) as an inrush resistor in a 240V offline SMPS.
Resistor datasheet
https://www.vishay.com/docs/28755/cmb0207.pdf
the DC Bus caps that will cause the inrush are two 1u5 400V film capacitors of negligible ESR.
Caps are MKT series (B32523Q6155) 1.5uF, 400V
-On page 15 of this datasheet.......
**broken link removed**
so it is an RC circuit with...
R = 22 Ohms
C = 3uF
Step input voltage = 340V. (mains peak)
will this resistor be able to handle this inrush situation?
Resistor datasheet
https://www.vishay.com/docs/28755/cmb0207.pdf
the DC Bus caps that will cause the inrush are two 1u5 400V film capacitors of negligible ESR.
Caps are MKT series (B32523Q6155) 1.5uF, 400V
-On page 15 of this datasheet.......
**broken link removed**
so it is an RC circuit with...
R = 22 Ohms
C = 3uF
Step input voltage = 340V. (mains peak)
will this resistor be able to handle this inrush situation?