Dear Sir/Madam,
I want to have a very simple circuit, one 5050 3V SMD LED and one CR2032 battery cell, according to the datasheet
5050 LED http://ncled.koreasme.com/eng/download/solleds/5050-3Chip-specification_WHITE(6500K).pdf
Vf: 3.0 ~ 3.4V (0.1V Sorting)
If: 60mA
CR2032 https://html.alldatasheet.com/html-pdf/95177/SONY/CR2032/80/1/CR2032.html
Nominal Volage 3V
If connecting the LED and battery in series, an experienced engineer asks me to add 1 Ohm resistor between the LED and battery to protect the LED by limiting the current pass through the LED. According to the Ohm's Law, ( Vs - Vled ) / I = R, (3 - 3) / 0.06 = 0, what is the theory behind adding the 1 Ohm resistor?
Best regards,
Kelvin.
I want to have a very simple circuit, one 5050 3V SMD LED and one CR2032 battery cell, according to the datasheet
5050 LED http://ncled.koreasme.com/eng/download/solleds/5050-3Chip-specification_WHITE(6500K).pdf
Vf: 3.0 ~ 3.4V (0.1V Sorting)
If: 60mA
CR2032 https://html.alldatasheet.com/html-pdf/95177/SONY/CR2032/80/1/CR2032.html
Nominal Volage 3V
If connecting the LED and battery in series, an experienced engineer asks me to add 1 Ohm resistor between the LED and battery to protect the LED by limiting the current pass through the LED. According to the Ohm's Law, ( Vs - Vled ) / I = R, (3 - 3) / 0.06 = 0, what is the theory behind adding the 1 Ohm resistor?
Best regards,
Kelvin.