I have an Arduino Uno and would like to check the frequency, voltage and current of a triangle wave. The problem is its at a higher voltage of about 1400v DC. Are there any sensors that can directly work with this voltage level? Even if it just returned a Vavg of 700V that would help too. Would a current sensor properly average the current like a cheap analog ammeter would? The current range will be in the few hundreds of mA's. Anyone know how I might be able to read the frequency?
Heres the waveform I need to obtain as much info as possible for in real time: