0
As close to virtually zero volts as is possible: the current will very small but there will be current.
This depends on two things: the material that is used to make the diode, and whether the voltage is applied in a forward or reverse direction to the diode. A typical silicon diode will pass forward current above 0.6 V and pass no reverse current until a much higher voltage is applied (check the rated peak inverse voltage PIV)
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What is a zener diod?
A Zener diode is a type of diode that sends current in the forward way like a normal diode, but also in the reverse direction if there is voltage that is larger than the breakdown voltage which is also known as "Zener voltage". The apparatus was named after Clarence Zener, who discovered this electrical property.
What is the difference between diode and resistors?
the resistance of a diode is .4 ohms is made of tantalum or .7 ohms if made of silicon. ANSWER: THE RESISTANCE OF A DIODE IS SIMPLY V/I the impedance however is defines by Boltzmann constant
How do you find the current rating of a zener diode if the power rating is 500mw and a voltage rating of 10v?
A zener diode with a rating of 500 mW will pass 50 mA at 10 V. (Power = voltage times current)Note: The question appears mis stated, in that it states a rating of 500 MW, not 500 mW. To my knowledge, there is no zener with a rating of 500 MW.
Why full eave rectifier rectifies negative half cycle?
the rectifier is Mainly used to convert the Ac current into DC current .In rectifier there are two diodes or (4 Diode In full wave bridge rectifier )are use is to conduct the current one is connected in forward bias(i.eD1) and the other is connected in reveres bias(i.eD2). As we know that the diode is conduct the current throw it When it is connected in forward bias . now when the voltage is applied to the circuit the the AC Current is start to flow throw circuit and in Positive half cycle of Ac current the Diode is Allow the current Pass throw it and during the Negative half cycle the Diode D2 is allow the current pass throw it and in these way the rectifier rectifies positive As Well As the negative half cycle
How does pn junction diode can be used as an electronic switch?
A diode allows current to flow in only one direction. If the current is flowing, the diode has a low resistance and it behaves like a wire or a switch in the on position. If the voltage across the diode is reversed, no current flows and the diode has a very high resistance. It behaves like a switch in the off position. DC voltages are used to switch the diode on or off. The signal that is being switched is usually an AC audio or radio signal. Capacitors block DC but pass AC signals. By combining diodes and capacitors, the AC and DC signals are kept separate and the switch can be built.
What is the condition that prevent the current to pass across diode?
if the voltage across the diode is less than the cut-in voltage of that particular diode .
What is the job of a diode?
A diode is used primarily as a Rectifier
What is meant by static and dynamic resistance?
static resistance: This is measured when diode id forward biased and input is a D.C signal. The ratio of voltage applied to the current flowing through diode gives static resistance Dynamic resistance : this is measured when input is A.C signal. since A.C signal varies continuously the resistance offered also changes continuously. the ratio of change in voltage to change in current gives dynamic resistance.
P-n junction diode?
A PN Junction Diode is one of the least complex Semiconductor Devices around, and which has the normal for passing current in one and only heading just. Be that as it may, dissimilar to a resistor, a diode does not carry on directly regarding the connected voltage as the diode has an exponential current-voltage ( I-V ) relationship and thusly we can not portrayed its operation by just utilizing a comparison. ex: Ohm's law.
What is a zener diod?
A Zener diode is a type of diode that sends current in the forward way like a normal diode, but also in the reverse direction if there is voltage that is larger than the breakdown voltage which is also known as "Zener voltage". The apparatus was named after Clarence Zener, who discovered this electrical property.
What is break down voltage?
A rectifier diode normally allows current to pass in one direction (the forward direction), and almost no current in the opposite direction (the "reverse" direction). The diode is designed to work up to a certain voltage; if more than a certain voltage is applied in the reverse direction, it will "break down", and suddenly a large current will flow. This can irreparably damage the rectifier diode, unless it is of a type specifically designed to operate in the breakdown region - i.e., a Zener diode.
Why do you put a diode across a relay coil?
If the current through a coil is interrupted, the coil generates a high voltage (such as in the old car ignition coils). The diode provides a path for the current to decay naturally, thus avoiding the high voltage.
What is Zener diode function?
Zener diodes are widely used as voltage references and as shunt regulators to regulate the voltage across small circuits. When connected in parallel with a variable voltage source so that it is reverse biased, aZener diode conducts when the voltage reaches the diode's reverse breakdown voltage.
What is the difference between diode and resistors?
the resistance of a diode is .4 ohms is made of tantalum or .7 ohms if made of silicon. ANSWER: THE RESISTANCE OF A DIODE IS SIMPLY V/I the impedance however is defines by Boltzmann constant
How the magnitude of voltage and current will behave if you double the RC-ciRCuit input frequency?
If you double the the RC circuit input frequence, the magnitude of voltage and current depends on whether or not the RC circuit is configured low-pass or high-pass, and on whether or not the original frquency is close to the knee frequency (the -3db point). The question has insufficient information to be answered completely.
How do you find the current rating of a zener diode if the power rating is 500mw and a voltage rating of 10v?
A zener diode with a rating of 500 mW will pass 50 mA at 10 V. (Power = voltage times current)Note: The question appears mis stated, in that it states a rating of 500 MW, not 500 mW. To my knowledge, there is no zener with a rating of 500 MW.
What is the purpose is of a diode?
The purpose of a diode is to allow electric current to pass in one direction while blocking electric current in the opposite direction. It is for this reason that diode is usually referred as the check valve.
