The difference between a BJT, or bipolar junction transistor, and an FET, or field effect transistor, lies in its control and polarity; BJT is bipolar and FET is unipolar. A BJT is primarily controlled by current, while an FET is mainly controlled by voltage.Know More
A BJT relies on two different charge carriers, hole and electron for its conduction level. An FET relies on one charge carrier, either hole or electron for its conduction level. An n-channel FET has electron as its charge carrier. Hole is the charge carrier for a p-channel FET. BJTs can be npn or pnp transistors.
Other differences between a BJT and an FET are in terms of temperature stability and size. Normally, an FET is smaller with a more stable temperature than a BJT.Learn more about Electricity
The difference between a cell and a battery is that a cell is a single unit that converts chemical energy into electrical energy, and a battery is a collection of cells. According to About.com expert Mary Bellis, each cell contains two electrodes and an electrolyte, a substance that reacts chemically with each electrode, generating an electrical current. Aggregating cells into a battery increases the electrical voltage they produce.Full Answer >
While both kVA and kW are units of measure, kVA is a kilo volt amperes and kW is a kilowatt. Both the kVA and the kW are units used to express power.Full Answer >
A faradic current is an alternating, asymmetric current that stimulates muscles throughout its nerve, according to the University of Buffalo. A galvanic current is a term mostly used in medicine meaning a direct current of steady flow.Full Answer >
A blackout is the result of a total power outage, and a brownout is a reduction in the output of energy by an electric provider. Brownouts are sometimes intentionally produced in an effort to avoid a blackout while problems with system voltage are corrected.Full Answer >