Why BJT is used instead of MOSFET?
BJT consumes more power as it is a current controlled device,it results in less efficient than mosfet. Because high wastage of current during switching results in more power consumption and less efficient in switching purpose. MOSFET is efficient because its output depends on the input voltage and not input current.
What can I use instead of a transistor?
Micro electrical mechanical (MEMS) relays might actually become a serious competitor to transistors. If you can make them small enough, they can switch pretty fast, certainly fast enough to replace the transistors in many applicaticons like low power MCUs where speed is not a priority.
Can a JFET be used as a substitute for MOSFET?
If the transistor becomes very hot, then the problem can be hidden both inside the transistor itself or inside the elements of its binding. Transistor type – different transistor types can be used in real devices: JFET or MOSFET. Electrical polarity – field effect transistors can be forward or reversed conduction (P- or N-channel).
Can you substitute a MOSFET transistor for an analog?
For most of MOSFET transistors it is enough to find an analog which is similar in its parameters. Often it is impossible to substitute the defective MOSFET transistor with the same one. In this case, in order to find an analog, it is necessary to do the following:
What should I do if my MOSFET is out of date?
If you’re trying to build a new circuit based on an old schematic and it references a no longer available part, then you should be able to find a new part that is “close enough” and adjust its gate bias and drain-source current to match your application.
When is it good to use N MOSFET and when do you use P?
As a switch, the simplest use of an N-channel MOSFET is as a ‘low-side’ switch, a switch that’s inserted into the negative/ground-return of the circuit being powered. Conversely, a P-channel MOSFET makes a good high-side switch, inserted in series with the positive/’supply’ to the circuit being powered.