I am having a hard time figuring out why i need a 2nd resistor to measure resistance from a thermosister. ok so if we change the resistance of a 12 volt supply we end up varying the current. so in order to read it as volts we need to ad a resistor co the change we get is in volts not in current. how…

voltage divider for temp sensor

system April 6, 2014, 8:41pm 3

ok how do we know witch resistor to use..? what is the math associated with it?

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