To create a HV voltage probe for this project we simply applied the classic “Voltage Divider” :

Where we used: Our Resistors (R1 & R2) were specialised High Voltage Resistors We selected the MOX-2-12 series as they resisted up to 20kV

Since our volt-meter only is reliable upto 2kV on its own, we needed to divide our input power by a factor of 10 to be able to read 20kV of our generator.

The values chosen were 100Mohm for R1 & 10Mohm for R2

-add photo of setup-

R2 was then placed in parallel with the standard lab Multi-metre which we measure to have had an impedance of approximatly 13Mohm (we can call it R3).

Placed in Parallel with the Multi-meter: R2'= R2*R3/R2+R3 = 5.65Mohm

Finally we have an output voltage of: V(out)=V(in)*(R2'/R2'+R1)

V(out)= V(in) *0.053

where V(out) < 2kV Therefore, we have built a very basic high-voltage probe that can measure up to 37.7kV which surpasses our initial design goal.

-add margin of error-