I think you mean 'diode valve'! A 'valve' is the British term for what Americans call 'tubes' or, more accurately, 'vacuum tubes'. So, a 'diode valve' is a thermionic valve generally used as a rectifier, much in the same way that a semiconducting diode is used, these days.
Evolve Revolve Envolve
two(2) re- volve
To roll, as in words such as reVOLVE which is to go around.
Yes, Minccino evolves with a Shiny Stone into Cincinno.
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
zener resistance of a zener diode is the resistance of the zener diode but which is the resistance of a diode
A light Emitting Diode.... Light Resistat Diode ...
Laser diode