I was under the impression to switch on the P-channel, sinking it to gnd/LOW would switch it on? Or the problem being switching it off!Use an NPN transistor to switch the P-FET then?
It was just a price matter. The P channel was cheaper.
Quote from: Blu-Vector on Oct 10, 2013, 08:58 pmIt was just a price matter. The P channel was cheaper. Then you are not looking at mosfets with similar specifications. N-channel mosfets are generally cheaper than similar P-channel mosfets.
So maybe i'm looking wrong, i pay 16€ shipped for a pack of 100 p-mosfets like those with -5v Vgs , 25amp, 30volt. I pay almost the double for thre N kind with same specifics.
I'm looking for Vgs 5v , not more not less. Almost 15amp , and obv at least 12v am i looking wrong? Could someone tell me the near-right specs? The resistence of the coil is 7ohm
Noob question alert:If a Vgs mosfet is rated Vgs = (+/-) 10 , it means it will be activated by the range -10 , 0 / 0, +10 , or it need the min and max value of -10 / +10?
I think you'll find that the +/- is used to denote "approximately" rather than "logic + and logic -" - but I might be wrongWhen I was a student (more years ago than I care to remember) we used a "wiggly equals" sign to denote approximation ?
Can you link to the packs of mosfets? Or at least provide the part numbers? It may be that the P-channel ones are in SMD packages and the N-channel ones are in TO220, which tends to cost more.
This is the code of the mosfet:NTD25P03LT4G it's not an SMD.