by creating two circuit loops
Class-D amplification is where the amplifiers act as electronic switches.
In a microprocessor, field-effect transistors behave as electrically-controlled switches.
when loads act as switches
amplifiers operated with Common emmitter configuration for bipolar transistors , will give both voltage & current gain . Though equivalent fet & mosfet circuit topologies exist , these amplifiers operate more on signal voltage on input & the signal current is negligible compared to a bipolar transistor.
The knee point voltage of a CT is the voltage at the "knee" of a I-V characteristic (if you increase voltage, and plot this voltage with respect to the current flow, you will see a logorithmic type response). The knee is usually specified as 10% distortion (ie, the voltage is 10% less than you would expect relative to the current flow). beyond the knee point, the CT is considered in saturation. This applies to amplifiers / transistors as well as CTs. Transistors used as ampifiers are operated in the "linear region", or the region below the knee point of that particular transistors I-V characteristic.
Transistors,diode,vacume tubes and amplifiers
Power transistors are transistors that are used in high-power amplifiers and power supplies.
Class-D amplification is where the amplifiers act as electronic switches.
The primary reason that NPN transistors are used more often than PNP transistors is that they usually operate faster (at higher frequencies) because the mobility of the current carriers in NPN transistors (electrons) is much higher than that of the current carriers in PNP transistors (holes).
no, the emitter base junction should be foward for both npn and pnp to act as amplifiers.
Nowadays, transistors are mainly used.
In a microprocessor, field-effect transistors behave as electrically-controlled switches.
Norm Dye has written: 'Radio frequency transistors' -- subject(s): Power transistors, Radio frequency Amplifiers, Transistor amplifiers, Transistor radio transmitters
Transistors,diode,vacume tubes and amplifiers
They are semiconductors and their electrical properties can be very precisely controlled by adding dopant impurities to create a wide variety of components integrated into one chip. Transistors of various types created by this doping process can act as switches or amplifiers depending on the other components integrated around them and connected to them.
Transistors are used in any electrical somponent including amplifiers, remote controls etc.
chips