High Voltage Measuring Device

Stme vm statclean technology.

High voltage measuring device.

High voltage measuring devices employ generating principle when source loading is prohibited as with van de graaff generators etc or when direct connection to the high voltage source is to be avoided. In the high energy physics world it is very common to need to measure a very low current down in the nanoamps at a very high voltage say 800vdc. For the high voltage measuring circuit an eight pin msop device was used for simplicity of connections to other devices. This is a high input impedance voltmeter with 70 gigohm input impedance.

The ltc 2990 is used to monitor system temperatures voltages and currents. Pt is a device used to step down voltage from high value primary voltage toalowvalue secondaryvoltage. To safely measure higher voltages connect a high voltage probe to an oscilloscope. Avalanche photo diodes and photomultiplier tubes as well as other detectors often require a rather large voltage bias while only consuming a tiny current.

The internal 10ppm c reference minimizes the number of supporting components and area r. And typically high voltages greater than 200 v are involved so safety from harmful voltage is critical. Using this capacitance voltage tap or voltage test point as has been suggested for a standard name for merely indicating an energized line is relatively easily done with a moderately priced high impedance sensing and indicating device. The secondary voltage is substantially proportional to the primary voltage.

The high voltage measurement circuit see the figure uses the lmc555. Measuring breakdown voltage is done by applying an increasing reverse voltage to the device until a certain test current is reached that indicates that the device is in breakdown. Homree volt test monitor flat plug ac 80 300v voltage panel volt test meter ac 110v 220v digital lcd voltmeter for rv boat camper household factory plug into outlet directly to measure voltage by homree. 2 march 2015 dr.

Low value voltage is easy to measure no need to develop high voltage measuringequipment. Through the i2c serial interface the device can be configured to measure many combinations of internal temperature remote temperature remote voltage remote current and internal vcc. Using it for accurately measuring actual voltages line to ground is more difficult because of meter loading. Capable of measuring up to dc voltage up to 5 5kv with 1 0v resolution over a range of himidity and temperature the meter measures with better than 1 accuracy without loading the power source.