How to Use MOSFET As a Switch

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In this instructable i am going to show how you can use mosfet as a switch

basically it has two uses

1 - as a switch

2 - as an amplifier

A COMPLETE EXPLANATION IS GIVING IN THE VIDEO AS WELL


Step 1: Selecting MOSFET

Here iam using power mosfet ir540

you can use any low power mosfet depend on the condition like 2n7000 etc

Step 2: Circuit Diagram

Impliment the above circuit on breadboard or etc

for login state you have give 5 volt signal at gate to turn on / off this can be done via voltage divider circuit with a help of a switch .....

OR

give a pwm signal from arduino / microcntroller etc to switching the mosfet,

Step 3:

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    3 Discussions

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    AdamB259

    2 years ago

    will try this ? when I require a switch like this.

    1 reply
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    afzalrehmaniAdamB259

    Reply 2 years ago

    actually the real application of this switch is controlling high voltages
    with just a 5 volt logic
    according to their datasheet
    vdd goes up to 100volt