How to Drive a Relay with a MOSFET

It is very common application to drive a relay with a MOSFET. From household applications to automotive are using this circuit. There are some aspects to consider like the stress on the MOSFET, the level of driving voltage to guarantee MOSFET saturation, the level of the actual voltage applied to the relay coil if enough to meet the requirement and

mosfet reverse battery protection

MOSFET Reverse Battery Protection

You may not know how to use MOSFET as reverse battery protection. The most common method is using a diode. However, diode voltage drop is high and this will creat issue in low voltage circuits. That is the reason many use MOSFET as reverse battery protection due to its very low on state voltage drop.


How to Know if MOSFET is Defective

Below are the guides on how to know if MOSFET is defective. These are the most common techniques that can be used to check if MOSFET is defective. Step #1 on How to Know if MOSFET is Defective :Diode Check The first thing we will try on how to know if MOSFET is defective is to check the diode drop.

MOSFET and BJT Comparisson

MOSFET Advantages Over BJT in Switching Converters

Way back several years ago, power supply designers and engineers are continuously searching for innovation. Long time ago what is available is only the linear type power supply. A linear power supply will consume a lot of power in order to provide regulation. This huge power consumption sacrifices the efficiency of the power supply. Try to imagine if you are


Designing MOSFET Switch – Comprehensive

MOSFET is not well discussed in the undergrads; much more how to designing MOSFET switch. MOSFET stands for metal oxide semiconductor field effect transistor. Actually it is easier than BJT if we are talking a switch circuit. Nowadays MOSFET is very popular in circuit designs. Such in automotive, power supply and general electronics as a low side and high side