HVPS: Difference between revisions
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(Created page with "{{navup |previous=Xray_Photo_Setup |up=Xray |next=HV_Probe}} The power supply for this project is based around an [http://www.amazing1.com/high-voltage-power-supply-and-charg...") |
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In order to measure the very high voltages used in this project, I had to build a custom voltage probe. The schematic is simple, two 500Mohm 20kV rated resistors in series, with a 0-50uA DC panel meter to ground. According to ohm's law, 0-50kV/1Gohm = 0-50uA. Thus, the 0-50uA panel meter now reads in kV, and was relabeled as such. The two resistors were put inside an acrylic 0.5" diameter tube, which was capped with hot glue and filled with mineral oil to prevent flashovers. The entire tube was then wrapped with heat-shrink tubing to reduce the chance of damage to the fragile acrylic tube. | |||
Latest revision as of 22:21, 7 August 2015
In order to measure the very high voltages used in this project, I had to build a custom voltage probe. The schematic is simple, two 500Mohm 20kV rated resistors in series, with a 0-50uA DC panel meter to ground. According to ohm's law, 0-50kV/1Gohm = 0-50uA. Thus, the 0-50uA panel meter now reads in kV, and was relabeled as such. The two resistors were put inside an acrylic 0.5" diameter tube, which was capped with hot glue and filled with mineral oil to prevent flashovers. The entire tube was then wrapped with heat-shrink tubing to reduce the chance of damage to the fragile acrylic tube.