Good day folks. I'm going to need to build an H-bridge to run some electric car windows (won't go into details as to WHY I need an H-bridge for that just yet, so let's just pretend it's a normal motor) and I'd like some advice on this. First off, the design: I know what H-bridges do and how they operate, but I ran into a bit of confusion when I came across this schematic.
Most other schematics show an H-bridge built out of 2 N-channel FETs and 2 P-channel FETs, however this one is all N-channels (all the arrows on the symbols are pointing inwards), so that's basically my first question: would such a thing work ? My basic electronics knowledge taught me that N-channels are dropped between the negative rail and the load, whereas P-channels are dropped between the positive rail and the load, so will those N-channels work between the load +12v as well like the schematic depicts them ? :| The transistors I'm going to use are IRF3710 only because I found 4 of them in my junk drawer (datasheet here). Also, I can't tell for sure how much power a car window motor actually draws. They have 30A fuses in the fuse box of my vehicle, so I can imagine they pull quite some amps, so I hope the 40A worst temperature scenario rating of the IRF transistors seems to cut it.
Most other schematics show an H-bridge built out of 2 N-channel FETs and 2 P-channel FETs, however this one is all N-channels (all the arrows on the symbols are pointing inwards), so that's basically my first question: would such a thing work ? My basic electronics knowledge taught me that N-channels are dropped between the negative rail and the load, whereas P-channels are dropped between the positive rail and the load, so will those N-channels work between the load +12v as well like the schematic depicts them ? :| The transistors I'm going to use are IRF3710 only because I found 4 of them in my junk drawer (datasheet here). Also, I can't tell for sure how much power a car window motor actually draws. They have 30A fuses in the fuse box of my vehicle, so I can imagine they pull quite some amps, so I hope the 40A worst temperature scenario rating of the IRF transistors seems to cut it.
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