Hello all,
I need a bit of help, first my delma.
I have 15KV AC being rectified to about 21KV DC {Full Bridge}. I need to measure the current and voltage of the output across a load, this needs to be constant monitoring as well. Basically building an HV power supply with panel meters to optimally adjust the voltage and current into a load. {plasma}
I can do a voltage measurement with a 1000:1 resistive probe parallel to the output and a small 0 to 50v digital meter, this works quite well. The problem arrises however when I want to read the current. In Circuitmaker 2K I simulated a circuit using a 1K resistor for resolution inline with the HV. Worked in simulation, yet made the meter in real life go boom.
I have considered the safest would be a clamp on style current measurement prior to the rectifier bridge, but I am a little lost on how to design such a measurement device. It would need to be able to read a 0 to 200ma scale with about a 1ma resolution +/- 5% is tolerable. Any direction pointing would be greatly appreciated.
Jim
I need a bit of help, first my delma.
I have 15KV AC being rectified to about 21KV DC {Full Bridge}. I need to measure the current and voltage of the output across a load, this needs to be constant monitoring as well. Basically building an HV power supply with panel meters to optimally adjust the voltage and current into a load. {plasma}
I can do a voltage measurement with a 1000:1 resistive probe parallel to the output and a small 0 to 50v digital meter, this works quite well. The problem arrises however when I want to read the current. In Circuitmaker 2K I simulated a circuit using a 1K resistor for resolution inline with the HV. Worked in simulation, yet made the meter in real life go boom.
I have considered the safest would be a clamp on style current measurement prior to the rectifier bridge, but I am a little lost on how to design such a measurement device. It would need to be able to read a 0 to 200ma scale with about a 1ma resolution +/- 5% is tolerable. Any direction pointing would be greatly appreciated.
Jim