![]() ![]() The LEDs will die.īut how do you control the electricity passing through the devices? You need a resistor. You don’t want to expose LEDs to excess power. If you want to know where the resistor goes, you must first figure out what the resistor does. ![]() ![]() The current flows from the positive to the negative. Instead, they will say ‘Anode’ to refer to the positive side and ‘Cathode’ to refer to the negative side.īut the concept is the same. The average technician won’t use the terms ‘Positive’ or ‘Negative’ to describe an LED’s polarity. Some of the experts you consult regarding the possibility of connecting the resistor to the positive or negative side may reject your question altogether because LEDs don’t have positive or negative sides.īut that is not entirely true. You don’t have to worry about destroying the LED because you wired the device poorly. This sounds annoying, but it is a good thing. Therefore, if you wire an LED backward, it won’t work. Electricity will flow through the LED in one direction, which is why polarity is so important. The current will flow through the resistor regardless of the direction. You don’t have to connect the resistor in a particular configuration for the device to perform its role. Therefore, even if you connect them backward, they will work. Resistors are unaware of a circuit’s polarity. However, the polarity doesn’t matter to the operations of the resistor. LEDs require a resistor because they don’t have enough internal resistance. Resistor On Positive Or Negative Side Of Led This guide will give you a definitive answer. Should you place the resistor on the positive or negative side of the LED? Despite what some people say, you don’t have to guess. How true is this? Does it apply to LEDs? LEDs have polarities. But the resistor doesn’t care whether the connected leg is positive or negative. The current is supposed to enter through the positive side. ![]()
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