Hi,
I have use TV flyback transformer to generate a voltage to DC 1.5KV.
I need to measure the high voltage, but my meter only allow 1000V, so I has use 2x 5.1Mohm resistor to divide the voltage down by half.
By don't consider accuracy, and my meter input impedance, I manage to measure it , show reading of about 600V. (a rough indication.)
But when there is arching effect of the high voltage, my meter show overload, look like it is >1000V (on meter), over the meter measurement range.
Questions:
1. Is a 1.5kV source, when arching/corona effect, the voltage will go very high >1.5KV?
2. Or there is problem in my driver circuit?
I am using PIC MCU (16F877A) PWM to drive MOSFET -> Flyback transformer.
Every time when there is arching, the PIC MCU will reset by itself.
How to prevent it reset? I have even add cap, 0.1uF, RC filter, LC filter to the 5V power supply, no matter how, there is still noise that attack the PIC MCU, especially at MCLR pin.
Thank you,
I have use TV flyback transformer to generate a voltage to DC 1.5KV.
I need to measure the high voltage, but my meter only allow 1000V, so I has use 2x 5.1Mohm resistor to divide the voltage down by half.
By don't consider accuracy, and my meter input impedance, I manage to measure it , show reading of about 600V. (a rough indication.)
But when there is arching effect of the high voltage, my meter show overload, look like it is >1000V (on meter), over the meter measurement range.
Questions:
1. Is a 1.5kV source, when arching/corona effect, the voltage will go very high >1.5KV?
2. Or there is problem in my driver circuit?
I am using PIC MCU (16F877A) PWM to drive MOSFET -> Flyback transformer.
Every time when there is arching, the PIC MCU will reset by itself.
How to prevent it reset? I have even add cap, 0.1uF, RC filter, LC filter to the 5V power supply, no matter how, there is still noise that attack the PIC MCU, especially at MCLR pin.
Thank you,