cupoftea
Advanced Member level 5
This concerns TUNS500F 500W ACDC power supply (100-265VAC).
Pg 7 (top) of this...
....is calling for a 4.7-22 Ohm inrush resistor into the PFC output caps of this ACDC module (TUNS500F). The page also calls for PFC output capacitance of 390uF to 2200uF.
Do you know where this inrush resistor is getting connected?, since if in series with the AC input, we are talking inursh resistor dissipation of 88-415W at max power, 115VAC input.
If its not in the power path, then how is it doing proper inrush limitation? (no internal relay is mentioned)
TUNS500F datasheet (page 8)
Pg 7 (top) of this...
....is calling for a 4.7-22 Ohm inrush resistor into the PFC output caps of this ACDC module (TUNS500F). The page also calls for PFC output capacitance of 390uF to 2200uF.
Do you know where this inrush resistor is getting connected?, since if in series with the AC input, we are talking inursh resistor dissipation of 88-415W at max power, 115VAC input.
If its not in the power path, then how is it doing proper inrush limitation? (no internal relay is mentioned)
TUNS500F datasheet (page 8)