It is an electronic's device which allow the passes of current in unidirection or only dc.It is used to convert ac to dc.
construction and working of semiconductor laser
It should only read one way
Because of zenar diode working in reveres bais
A diode is working when it allows current to flow in one direction (forward bias) while blocking it in the opposite direction (reverse bias). You can test its functionality using a multimeter set to the diode testing mode; a good diode will show a voltage drop (typically around 0.6 to 0.7 volts for silicon diodes) in one direction and display no conduction in the reverse direction. If it conducts in both directions or shows no conduction at all, it may be faulty.
A diode when forward biased will allow the flow of current while reverse biasing will cut off the flow of current. It is the basic building block of any semiconductor.
when electron is excited from valence band to conduction band
LED stands for light emitting diode. If it is polarized correctly, and working correctly, it will be emitting light. If it is burnt out, or voltage has been applied backwards to it, it will not.
zener diode :zener diode operates under reverse bias voltageideal diode :ideal diode operates under forward bias voltage
yes, diode can be used as rectifier diode to convert ac to dc
The read type diode are called impatt diode
A diode is used primarily as a Rectifier
Laser diode