Related Understanding how food water footprints work Full drought coverage Select items from the menu to create your plate: Protein Starch Fruits/vegetables Drink Give me a random plate (Commercial U.S. average) Fruits and vegetables: 0 gallons Drink: 0 gallons Starch: 0 gallons Protein: 0 gallons.
The ampere (SI unit symbol: A), often shortened to amp, is the SI unit of electric current (dimension symbol: I) and is one of the seven SI base units.
Best Answer: The 'h' (lower-case) stands for 'hybrid model'. Transistor amplifiers may be modeled as 2-port devices with 1 port being the 'input' and the other port the 'output'. Any 'black box' 2-port device has sets of parameters that can be used to describe the electrical characteristics of what's inside the box. One type of these parameters is called the hybrid set, or h parameters. For the common-emitter bi-polar junction transistor amplifier h21 is called hfe. 'h' is for hybrid, 'f' is for 'orward, 'e' is for common Emitter. The difference between hFE and hfe is: FE is for a fixed DC bias and a fixed DC current gain (and that must be specified for each value of hFE).