Saturating a N-Channel MOSFET


Posted on Feb 7, 2014

It needs 2 volts as its threshold however, that only allows a small amount of curent to flow through the transistor. How do I know how much voltage I need to make it fully on. Also, how do I determine what type of resistor to use from the 5V GPIO pin to the gate of the transistor. My other question is what do I need to look at to make sure the diode is strong enough to handle the EMF kickback. The diode I am looking


Saturating a N-Channel MOSFET
Click here to download the full size of the above Circuit.

at is from Jameco with model number 1000 VOLT 1 AMP SILICON RECTIFIER DIODE. VERY IMPORTANT: You connected a transformer directly to 7805 regulator! There is a good chance that such setup will destroy everything to the right side of the transformer. You need a rectifier, a bulk capacitor and capacitors recommended in the 7805`s datasheet for this to work correctly. If the transformer is there to represent wall-wart which outputs DC voltage, than it`s safe, but capacitors small capacitors for 7805 will still be needed for good operation. AndrejaKo Mar 8 `13 at 19:00 @jippie: There are a lot of things to discuss with this circuit, so I`d rather not split the question into lots of pieces. That will make is harder to see the whole picture. Think of this more as a design review question than specifically about the FET and a diode. Olin Lathrop Mar 8 `13 at 19:17




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Load detector Mains Switch
    Adjustable TTL clock
    Light-modulator
    8W-fworescent-lamp-inverter
    Simple Telephone Ring Tone Generator Circuit schematic with explanation
    simple-amplifier-with-c945mje340-and.html
    lm317 variable power supply circuit project
    Current and Variable Voltage Power Supply
    dc tesla coil
    Single Zone AlarmCircuit - Project
    Advanced Simulation for ESD Protection Elements
    Mods and Odds
    HEADS OR TAILS GAME CIRCUIT



    Top