Hi, I thought I'd drop by to share an online tool I made with you.
It basically finds the closest combinations of two parallel resistors to make any specified total value. You can choose which E series are available to select from and, as a little bonus, it will show the proportion of current through each of the two resistors.
So, if you really need a 347R resistor, and have the E24 series to hand, you can quickly discover that a 430R and 1k8 will get you to within 0.085 Ohms.
I dare say this has been done before, and very likely done better, but I made this to use at work a while ago, and found it quite handy. So, if anybody finds it useful, that's great.
Here it is anyway: http://tools.hothotfire.com/parallel_calculator
Enjoy...
It basically finds the closest combinations of two parallel resistors to make any specified total value. You can choose which E series are available to select from and, as a little bonus, it will show the proportion of current through each of the two resistors.
So, if you really need a 347R resistor, and have the E24 series to hand, you can quickly discover that a 430R and 1k8 will get you to within 0.085 Ohms.
I dare say this has been done before, and very likely done better, but I made this to use at work a while ago, and found it quite handy. So, if anybody finds it useful, that's great.
Here it is anyway: http://tools.hothotfire.com/parallel_calculator
Enjoy...
