What Resistor Do I Have

For most standard circuits you dont need to worry about the types of resistors you choose. One volt divided by one amp equals one ohm.

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What does the resistor do to my circuit.

What resistor do i have. Its actually a pretty boring device. For instance if you have a 4 band resistor and the colors are red orange yellow and red then you have a resistor with a value of 230000 with a tolerance or accuracy of plus or minus 2. If your schematic does not tell you the necessary power rating for the resistor and you dont know or dont want to know how to calculate it then try using a.

The tolerance of a resistor may also be represented by a gold or silver band. Power supply voltage led voltage current in amps desired resistor value in ohms. You will use ohms law time and time again when dealing with resistors.

If you add some voltage to it nothing really happens. If you have ever taken a basic electronics course in the past then they likely drilled ohms law into your head. In electronic circuits resistors are used to reduce current flow adjust signal levels to divide voltages bias active elements and terminate transmission lines among other uses.

Well maybe it gets warm but thats it. If you are dealing with current in ma convert to a by dividing by 1000 our version of the formula now looks like this. The value of a resistor is its resistance measured in ohms.

The resistor is a passive device and doesnt do anything actively to your circuit. This simple calculator uses the the same basic ohms law formula as the ohms law calculator but in a more convenient form. Ohms law the one formula to rule them all when it comes.

That means that the resistor has between 225400 and 234600 ohms. The units are such that 1 v 1 a 1. All you need to worry about is the resistance value and how much power it can take.

The simplest is by a dropping resistor. This is useful for simple devices and not more complex electronics which should use the appropriate regulated power adapter to get to the correct voltage. The resistor value would have been sufficient to reduce current flow to a value that could be safely conducted by the series device with the lowest allowable current value.

A resistor is a passive two terminal electrical component that implements electrical resistance as a circuit element.