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    Flyback + Cap charging time, help

    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...
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    Woo-Woo MOSFET switch question

    Hi, i am just learning how to use MOSFET as a switch. I am watching this video So in the video, Vdd is 9V and Vin is +5V using a separate power source. Now this is confusing me. In BJT base has to be 0.6V above emitter. How does this translate to MOSFET? In other words, if Vdd was not 9V but...
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