Kerso1991 said:Hiya, I've been mucking around with a 2n7000 MOSFET and I can successfully turn it on and off, but to turn it off I either have to put the gate at 0v and wait a few seconds and it turns off itself or apply negative voltage to the gate and it'll stay off when I return it to 0v. Is this normal for MOSFETs or for even just FETs? Or is this just a dodgy MOSFET? Because as far as I know the MOSFET should turn off at 0v at the gate
Any help would be great
A MOSFET (metal-oxide-semiconductor field-effect transistor) is a type of transistor that is commonly used in electronic devices. It works by using an electric field to control the flow of current between the source and drain terminals, allowing it to act as a switch or amplifier.
The properties of a MOSFET include its ability to handle high currents, low power consumption, and fast switching speeds. It also has a high input impedance and low output impedance, making it suitable for use in a variety of applications.
A 2n7000 MOSFET turns on and off by applying a positive voltage to the gate terminal. When the voltage is applied, the electric field created by the gate attracts electrons towards the channel, allowing current to flow between the source and drain terminals. When the voltage is removed, the electric field dissipates and the MOSFET turns off.
The turning on/off of a MOSFET can be affected by factors such as the gate voltage, gate-source capacitance, and channel length. Additionally, the materials used in the MOSFET and the temperature can also impact its performance.
MOSFETs have several advantages over other transistors, including their high switching speeds, low power consumption, and ability to handle high currents. They also have a smaller size and can be easily integrated into electronic circuits. Furthermore, MOSFETs have a high input impedance, which allows for easier control and manipulation of current flow.