Since a MOSFET is a high input impedance, voltage-controlled device, the drive circuitry
is simpler. The gate of a 10 A power MOSFET may be driven by the output of
a standard logic circuit. In contrast, if the current gain of a 10 A BJT is β = 10, then
a base current of 1 A is required for a collector current of 10 A. However, this
required input current is much larger than the output drive capability of most logic
circuits, which means that the drive circuitry for power BJTs is more complicated.