Its very basic question i know, however, i was curious as to what size resistor would we need for specific schematic. I'm not sure how to test whether i need a resitor around 100 Ohms or 1M Ohms. How do i test what resistor i need? I know i need to know the voltage that will be running thru the circuit but how can i check to see if i need a big resistor or small value resistor.
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R=V/I
If you know the voltage V and the current I, you calculate R. Or calculate V or I if you know the 2 other parameters.
For more in-detail help we need to see the schematic of the respective part of your circuit and a short explanation what this part of the circuit is expected to do.
If you know the voltage V and the current I, you calculate R. Or calculate V or I if you know the 2 other parameters.
For more in-detail help we need to see the schematic of the respective part of your circuit and a short explanation what this part of the circuit is expected to do.
When I think of "size" for a resistor, I think of power rating. The value in ohms is, well, the value of the resistor.
In general you don't "know" what value is required, you calculate it. Harald is 100% correct in saying that we need to see the circuit because there are many different calculations depending on exactly what the resistor has to do.
In general you don't "know" what value is required, you calculate it. Harald is 100% correct in saying that we need to see the circuit because there are many different calculations depending on exactly what the resistor has to do.
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