How do we calculate the value of fusible resistor used in the input side of a capacitive power supply. The supply produces an output voltage of 5V DC. I want to add the fusible resistor (RT1) to protect the diode (1N4007) in the circuit from surge current . The data sheet of 1N4007 specifies that the diode can withstand a peak forward surge current of 30A for a period of 8.3 ms . How do I calculate the value of fusible resistor from this data.
put on hold as too broad by Marcus Müller, Sparky256, Bimpelrekkie, StainlessSteelRat, John Birckhead Feb 19 at 20:55
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