How to make Simple Homemade Touch Switch using MOSFET 🙄
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In this Video, I go over how to connect an N-Channel MOSFET to a circuit for it to function as an electronic switch.
MOSFETs are voltage-controlled devices. This means that a voltage applied to the gate controls whether the transistor switches on or off. When an N-channel (enhancement-type) MOSFET has no voltage at its gate, it is OFF and no current conducts across from drain to source; thus, the load connected to the MOSFET will not turn on. When there is sufficient voltage at the gate, the MOSFET is on and current conducts across from the drain to the source to power on the load. Know the distinction between a voltage-controlled device and a current-controlled device. MOSFETs are voltage-controlled. This means that only voltage has to be applied to the gate for it turn on. It does not need current. Therefore, when we are wiring up the N-channel MOSFET, we simply connect the voltage source to the gate terminal. No resistor is necessary, as would be the case for a bipolar junction transistor, which is current-controlled. We simply connect a positive voltage to the gate terminal without an external resistor. Therefore, with a MOSFET, biasing the circuit is actually a little simpler than with BJTs.
Thankyou
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The Clock (instrumental) by RYYZN / ryyzn
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Title: The Clock (instrumental) by RYYZN
Genre and Mood: Hip Hop & Rap + Sad
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