Hi,
I need help with these,
A L.E.D is an indicator used in electronic control systems. These indicators can be damaged if excess current passes through them.Once such device requires a current of 20mA to light brightly without being damaged ; a voltage of 2v is developed across the LED when it is illuminated.
Calculate the size of the resistor R1 that should be connected in series with the LED if the LED is to be connected to a 24v DC supply.
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I've tried dividing the voltage by the current but im not sure if this is the correct way?
Thanks for any help
I need help with these,
A L.E.D is an indicator used in electronic control systems. These indicators can be damaged if excess current passes through them.Once such device requires a current of 20mA to light brightly without being damaged ; a voltage of 2v is developed across the LED when it is illuminated.
Calculate the size of the resistor R1 that should be connected in series with the LED if the LED is to be connected to a 24v DC supply.
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I've tried dividing the voltage by the current but im not sure if this is the correct way?
Thanks for any help