A2. For amplification to take place, one needs three terminals; an input, an output, and a control signal.
This indicates the original " valve" naming; after a mechanical valve, where a small effort on a (hydraulic) valve may be used to control a larger effort of the controlled fluid.
A1. If u meant why diode can't be used as an amplifier diode is used as a rectifier..
it converts ac current to dc and there is an inbuilt voltage drop... so it can't be used as an amplifier
Never. It is impossible to use diodes for amplification.
yes it can. i cant believe you didn't know that.
the diode is forward bias ANSWER: A bypass diode is used to bypass circuitry as soon as the diode is forward bias by 0.6 volts The use it to bypass to prevent damage to the circuitry
In a cascade amplifier, two identical or non identical amplifiers are cascaded ,i.e., connected in series through a capacitor. They are mostly common emitter amplifiers that are cascaded together.The final gain of the cascaded amplifier is the product of the first amplifier's gain and the second amplifier's gain. However, the bandwidth of the cascaded version becomes lesser than the individual gains.
silicon diode is preferred more when compared with germanium diode because in silicon diode the operating voltage is 0.7v where as in germanium diode the operating voltage is 0.3v , germanium is temperature sensitive so it can be easily destroyed by increasing temperature hence silicon diode is preferred more
The voltage across a Silicon Diode junction varies 0.00011 volts per degree Kelvin. Connect the diode to a high gain amplifier and the output of the amplifier to a DVM using an appopriate voltage scale.
superdiode consist of diode and amplifier circuit.it is used for the rectification of small signals
Never. It is impossible to use diodes for amplification.
Diodes are not amplifiers.
The zener diode is neither a voltage amplifier nor a current limiting device but can be used in oscillator circuits to supply a constant output voltage.
A: YES but not directly. for instance a discrete differential amplifier one side need to be a transistor to recover gain but the other transistor can be a diode since in real time that is the operative base to emitter current difference. .
Charles Thomas Key has written: 'IMPATT diode amplifier'
The use of the pn diode is for rectification. It can also be used as a switch.
no we not use resistance in place of diode.
yes it can. i cant believe you didn't know that.
Backward diode
A diode is not an amplifier. It is a rectifier with asymmetrical voltage breakdown voltages. Usually the forward voltage is around 0.6V to 0.7V (silicon), and the reverse voltage is smaller than breakdown voltage, which is much higher. A transistor can be used as an amplifier, by taking into account the fact that the voltage breakdown curves vary, usually collector-emitter, as a function of some other current, usually base-emitter, but this depends on the class of the amplifier and whether or not the transistor is driven into saturation.