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  • How to properly drive an N-Channel mosfet with an ESP32
    From this YT video I learned that above certain loads for a P type mosfet the circuit has to change but I am using an N type so it should be fine Also that after certain frequencies the mosfet will behave differently if the off time is high enough to interfere with the next on cycle, but I am using the default frequency for the ESP32 which as
  • When is a MOSFET more appropriate as a switch than a BJT?
    For an N-channel MOSFET (NMOS), for instance, which can switch current from Drain to Source, the body diode goes in the opposite direction, pointing from Source to Drain So, feel free to take advantage of this body diode when necessary, or just use the MOSFET as a diode directly
  • How to stabilize an op-amp with a MOSFET in the feedback loop
    The voltage reference at the top is about 3-5V lower than the supply voltages to the op-amp In the current circuit implementation I have a different MOSFET ZVP2106, which gives higher current and the sense resistor dropped to 50 3 Ohm
  • Reverse Voltage Protection with a P-channel MOSFET
    The way I see it, I can either connect the Drain-pin to the Input Voltage, or the Source-pin to the Input Voltage Does it matter which way I connect the P-channel MOSFET, or is the protection symmetric about the drain-source channel and all that matters is that the D-S channel is in series with the input voltage?
  • MOSFET symbol - what is the correct symbol - Electrical Engineering . . .
    I've been on this site now a couple of months and I notice various symbols used for MOSFETs What is the preferred symbol for an N Channel MOSFET and why?
  • operational amplifier - OP Amp controlling a Power Mosfet - Electrical . . .
    Also, when driving a MOSFET like this, it's usual to turn the op-amp into an integrator so that the excessive capacitance of the MOSFET's gate-source does not cause the circuit to become unstable However, of all the chips that are available, the LM324 is probably one of the least likely to be problematic in this respect
  • How does this MOSFET-based Schmitt trigger work?
    This circuit is an inverting NMOS Schmitt trigger I have to admit, it took me a long time to figure out that this odd-looking diagram was actually showing the famous Otto Schmitt circuit Once I turned Q3 by 90 degrees counterclockwise, everything made sense What exactly does Q3 do and how does this circuit work? As you probably know, the classic Schmitt trigger consists of two source
  • Do MOSFETs have a diode built into them?
    For single MOSFET circuits driving an inductive load, the body-diode will NOT work as a replacement for a flyback diode as it conducts in the wrong direction Consider for example an N-channel MOSFET as a low-side driver for a solenoid When the MOSFET turns off, the voltage spike at the drain will be positive
  • Back to back P channel MOSFET as a switch [closed]
    This a P-channel back to back MOSFET configuration switch Assuming at point A, 12V is present, which is the mosfets are gonna switch Now the question is, why are those two gate resistors used?,
  • MOSFET as a switch? - Electrical Engineering Stack Exchange
    An N-channel MOSFET, as Kurt suggests, only works if it's either on the low end, or if you use a bootstrap charge-pump circuit to boost the voltage into the gate above the 12V source voltage





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