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.
Backward diode
Diode is a two terminal semicon. Diode is a Switching device
Example sentence - The little red diode can be used as a pin on a tie.
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
voltage regulation
scr is basically a three terminal device can be used as diode by leaving one terminal
its the simplest thing to do. There are three legs in a transistor, one each of collector, base and emitter. So if you need to use it as a diode, just connect either collector-base or emitter-base. Say, if you use an NPN transistor, then the base region will be the anode of diode and emitter or collector will be the cathode of the diode.
gas filled cold cathode glow discharge tubes.
you use an ohm meter
We use pn junction diode in rfctification as a rectifier becase it allows current to flow in one direction only, i.e. in forward biase only , and stop current to flow in reverse baised. thats why we use pn junction diode in rectification.
The 1N34 is a germanium signal diode, so it would be used as a detector/mixer in a.m. reception for example.