How Do You Trigger a Mosfet?

In order to turn on a MOSFET, a voltage higher than the rated gate threshold voltage Vth must be applied to the gate. While in a steady on or off state, the MOSFET gate drive basically consumes no power. The gate-source capacitance of a MOSFET seen by the driver output varies with its internal state.

At what voltage does a MOSFET turn on?

1) a Vgs between 3-5V will turn on the MOSFET. 2) Vgs must be greater than 5V, since that is the minimum voltage required to turn on the MOSFET.

How are MOSFETs controlled?

By applying voltage at the gate, it generates an electrical field to control the current flow through the channel between drain and source, and there is no current flow from the gate into the MOSFET.