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'''In Detail:'''<br>
The best way to get a better understanding is to have a look at the principle of voltage divider.<br>
[[Datei:voltagedividerVoltage-divider-shunt.jpgpng]]<br>
In a voltage divider the current is always the same.<br>
[[Datei:I_total.gif]]<br>
[[Datei:r_total_shunt.gif]]<br>
[[Datei:ratio_r_shunt.gif]]<br>
[[Datei:vdrop_shuntv_drop_shunt.gif]]<br>
-> This tells us that we have to choose the resistor as small as possible so that we don’t drag to much voltage from the load.
This table displays how the resistance value of the shunt (R2) R_shunt drains power if it is too high.
Also you can see how small the voltage drop gets if the resistance is to low, what makes it hard to measure.
! I (total)
! U (total)
! R1 R_load! R_shunt! U (load)! R2 U (shunt)! U1! U2! P(lost)
|-
| 0,25A
| 0.1
| 4.975V
| 0.25V025V
| 0.00625W
|}
