An ideal diode:
because that the tunnel diode is a standard pn junction diode in many respect except its highly doped pn junction so it has some characteristics in the negative resistance region another that its a standard diode
Its because one of the diode gets shorted.The diode in the left lower arm in a bridge rectifier gets shorted by the ground points of both the cro and the function generator.
it is a rectify diode
Its schotlky diode. schotlky diode is metal semi conducter junction. It has fast switchng speed. The cutting voltage of schotlky diode is about 0.2 volts.
The difference in the 1N4007 diode and the 1N4007S diode is the voltage. The 1N4007S has a higher voltage but the meaning of the S is not listed.
zener diode
The Zener diode has the characteristics of a constant voltage source.
An ideal diode would match the purpose of a diode without any of the drawbacks. The purpose of a diode is to control current flow - The diode "turns on" for current flowing in one direction, and "turns off" if current wants to flow in the other direction. Ideally, there would be no voltage drop across this diode when allowing current flow, thus no power loss. When the diode is "turned off" by a negative voltage, idealy there would be no current flow (no matter how large the negative voltage).
characteristics if gunn diode
zener diode :zener diode operates under reverse bias voltageideal diode :ideal diode operates under forward bias voltage
what is the difference between reverse characteristics of zener diode and a practical diode ?
Zener diode is heavily doped pn junction diode.
our raight
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Consider ideal diode to be connected in series with resistor of 6kSilicon diode forward bias voltage = 0.7 voltsCurrent across 6k resistor = (5-0.7)/6000 amperesVoltage across {resistor + diode}=4.3 + 0.7=5vIf silicon internal resistance is 6k then voltage across diode=5vIf external resistance is 6k and diode resistance is negligible then voltage across diode=0.7v
clipper
SILICON same as any other diode but with different characteristics