Svein said:
A p-channel MOSFET turns on when the gate is negative relative to the source. You need to invert the driving signal.Raisintoe said:
I do not think the optocoupler is able to drive the PMOS gate as far down as necessary. You need to amplify and invert the output of the optocoupler.Raisintoe said:
Svein said:
A MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a type of transistor that is commonly used in electronic devices. It acts as a switch to control the flow of electrical current and is important because it allows for efficient and precise control of electronic circuits.
Some common issues that can arise with MOSFETs include overheating, breakdown due to excessive voltage, and short circuits. These issues can cause the MOSFET to fail and disrupt the proper functioning of the electronic device.
An 180 Ohm resistor can help solve MOSFET issues by limiting the amount of current flowing through the MOSFET. This can prevent overheating and protect the MOSFET from damage. Additionally, the resistor can act as a buffer to reduce the effects of voltage spikes, helping to prolong the lifespan of the MOSFET.
Other methods for solving MOSFET issues include adding heat sinks, using a higher voltage MOSFET, and implementing proper circuit design and layout techniques. It is also important to ensure that the MOSFET is not being overdriven and to properly test and troubleshoot the circuit.
While it is impossible to completely prevent MOSFET issues, proper circuit design, layout, and testing can help minimize the chances of encountering problems. Additionally, using high-quality components and implementing safety measures such as fuses can also help prevent MOSFET issues.