modified 9 years ago

Voltage Division

00:30:43

V2 = Vt(R2/(R1+R2))
3.33 = 5(2000/(1000+2000))

published 9 years ago

2ctiby

9 years ago

Yes....it is a valuable principle to keep handy. Be sure to describe all the bits carefully though. For instance, in maths multiplication and division is traditionally done before addition and subtraction, so you need another set of brackets to declare those parts that are to be added. Also...some people may be left wrongly thinking that V1 refers to the voltage across the top resistor rather than it being the Vt total supply across both, so this looks a bit more descriptive: V2 = Vt (R2/(R1+R2))

2ctiby

9 years ago

It would be nice if one day EC were to give us a text facility so that we could label resistors etc.

revsin

9 years ago

Thanks for the heads up on my oversight, I'm middle aged with a poor math education. Wasn't that good in math back in the day and just got worse with age so I'm guilty as charged!

2ctiby

9 years ago

I am heading past middle age and failure is my middle name so keep on encouraging others with your useful snippets and hold tight when unkind comments try to hurt you.

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