Can you help me figure out how long it takes for a let's say 100W flyback outputting full wave rectified 5000V pulsed DC at 20mA to fully charge a 1uF cap?
For simplicity of things we can assume a pure DC 5kV source that can output 20mA max.
I am using 20mA cause that is approximate output current of the flyback according to my calculation.
We can't just use a RC constant to calculate the charging time here. If we did we would multiply capacitance and resistance of the secondary as so 0.000001F * 100Ohm =0.0001s.
According to time constant cap would fully charge in 5T, that is, 0.0005s, but this assumes current of 50A is available!
Yet, only few dozen milliamps is available. So i roughly estimate it would take about 1 second for it to fully charge.
Am i making a mistake somewhere, i hope i do, cause i would love it to charge faster.
Maybe some of you can simulate this.
For simplicity of things we can assume a pure DC 5kV source that can output 20mA max.
I am using 20mA cause that is approximate output current of the flyback according to my calculation.
We can't just use a RC constant to calculate the charging time here. If we did we would multiply capacitance and resistance of the secondary as so 0.000001F * 100Ohm =0.0001s.
According to time constant cap would fully charge in 5T, that is, 0.0005s, but this assumes current of 50A is available!
Yet, only few dozen milliamps is available. So i roughly estimate it would take about 1 second for it to fully charge.
Am i making a mistake somewhere, i hope i do, cause i would love it to charge faster.
Maybe some of you can simulate this.