voltage divider resistor placement

[arunmaran10]

Hi,
Voltage divider resistors is good to place near source, but what will be the effect if we place near destination?



Regards,
Arunmaran.

 

[ashugtiwari]

The line resistance i.e. resistance of wire from source to circuit and circuit to output is very negligible compared to the resistances of divider circuit. So, they don't affect the actual working of voltage divider. Until unless u r dealing with distribution lines of much larger lengths.

hope that helps.

 

[jiripolivka]

If you transmit only a DC voltage from a source to a load (destination), then the distance is not important. If the voltage is AC, then line will affect it as a function of AC frequency.

 

[asdf44]

It often doesn't really matter.

Though there are some things that might make it matter:
-If the signal being divided is high voltage or high current it can be advantageous to divide it down at the source before running it across your board
-If the divider is high impiedence (large R values) the resulting signal may be extra susceptible to noise or other parasitics. If that's a problem you may want to divide it down at the destination

 

[marce]

What is the voltage driving... is it a feedback input?
Or are we talking about terminators for a digital signal....
What is the source....
What is the circuit...