Mit Atmega belastbare USB-Spannung schalten. MOSFET?

[noiasca]

@anon1549072

Es soll Plus geschaltet werden.

High side switch

hier:

Using High side mosfet switching for high current apps

Hello, I'm trying to learn about using mosfets for high current applications and there are a few practical things I don't understand some are about why they get so hot easily if they are such wonder devices and for now what is the advantage and disadvantage of driving n channel mosfets at high and low sides (from what I understand low side switching is way more popular... here is the general High side switching circuit, could that work?: [image] Thanks for your time.

und hier:

High side switch with P-channel MOSFET

Hello, I'd like to switch 12V to an external module, I'm intended to use a high side switch. The current consumption of the module is relatively small, around 200-300mA. Basically the arduino board will be supplied through a fuse, and I'd like to switch the voltage after this fuse to the module. I found this example on the forum for high side switching with a P-channel MOSFET. Example [PFetSwitch] Wouldn't a series resistor to the gate terminal needed? [npn-pch] Without that there is not…