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A normal (non zener) diode only conducts in one direction, when the anode is more positive than the cathode. This is called forward bias, and it occurs between 0.6 and 1.4 volts, depending on the specification of the diode.
In the reverse bias condition, with the cathode more positive than the anode, the diode does not conduct, except for minor leakage current, until it reaches its breakdown voltage. At that point, normal diodes1, unless current limited, will self-destruct. The reverse breakdown voltage is usually much more than the forward bias voltage, typically hundreds or thousands of volts reverse compared to around one volt forward. As a result, diodes, as used in rectifier circuits, will only conduct on the positive half-cycle of AC power.
If you want conduction in both directions, in a rectifier, you need two diodes and a center tapped transformer, or four diodes in a bridge configuration (one phase; six diodes for three phase) in order to conduct on every half line cycle.
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1Zener diodes, on the other hand are designed to conduct in a controlled fashion in the reverse bias condition due to PN junction doping that allows reverse breakdown without destruction. Zener diodes are used in regulator circuits.
What else can I help you with?
Why does the lemon provide the most voltage in a citrus power battery?
it doesnt a lime produce's more voltage than a lemon
Why power does not remains same in series circuit?
In a series circuit, the current through each element is the same current. Because the total current must flow through every element. In a parallel circuit, the voltage across each element is the same voltage. Because every element is connected individually across the power supply.
What is an example of a circuit that doesnt obey Ohms Law?
The easiest circuit that does not obey Ohm's law is a circuit that has a resistance that depends on temperature. For example, if you take a light bulb and draw a current-vs-voltage, you see that in the beginning (under low voltage) the graph is NOT a straight line, but under high voltage the graph is linear. This is because the resistance depends on temperature. the equation V=IR isn't consistent with the graph's shape.
How does a choke work in a tube light circuit?
The choke works in conjunction with a starter . When you turn on the light , voltage is applied to the choke, and when the switch opens after a few seconds, it creates a high voltage across the contacts at each end of the tube. This starts the ionization of the gas , which glows. Once ionized, it continues producing light even when the voltage applied is only 120 VAC, the power line voltage.
Dc and ac analysis of Differential amplifier?
DC Analysis: For this analysis, frequency is made zero and the voltage of the source is increased in small steps from 0V.And the output voltage is plotted. So, finally we get a Vout vs Vin curve. AC Analysis: In this analysis, we choose an AC source. We keep the Offset voltage = 0V, AC voltage or small signal voltage = 2V (You can take any voltage you wish and it doesnt matter). So, to plot the ac response or frequency response of the circuit, increase the frequency in steps and note the output voltage. from this analysis , we can find the gain of the circuit over frequency.
How does a transformer work you mean how does it reduce current and increase the voltage you have tried the math this doesnt make any sense?
A transformer has a primary (Where the AC supply voltage is applied); and a secondary where a voltage is induced by a fluctuating magnetic field in the iron core of the transformer. The secondary voltage depends on the ratio of windings between the primary and secondary. Since the transformer can't manufacture power the product of the voltage and current at the primary exceeds that in the secondary. So if the transformer steps up the voltage in the secondary, the maximum current in the secondary must decrease. Similarly if the voltage is stepped down the maximum current increases in the secondary. There are always losses in this process so the power in is always somewhat less than power out.
Do European batteries work in American devices?
Since Batteries work on DC then it doesnt matter wheter or not they are European or American, as long as you choose the right Voltage and Current for the batteries.
Current that doesnt reverse direction is called?
direct current
Why does the lemon provide the most voltage in a citrus power battery?
it doesnt a lime produce's more voltage than a lemon
What is negative coreallation?
one that doesnt correlate with whatever
Why power does not remains same in series circuit?
In a series circuit, the current through each element is the same current. Because the total current must flow through every element. In a parallel circuit, the voltage across each element is the same voltage. Because every element is connected individually across the power supply.
If the seawater is an electricity conductor why doesnt it electricute people who are swimming in the ocean?
Sea water does not conduct its own electricity, and due to its liquid form, it can not create static electricity. Leaving lighting, or downed electricity lines to provide it with an electical current, and depending on the voltage of the current, how far it travels.
How was you diagnosed with trick but partner was negative how is that?
It doesnt always affect both people. dont ask why, it just doesnt.
Why doesnt a bird standing on a high voltage wire get electrocuted?
The wires are coated in rubber.
Are there negative effects by a seismograph?
It doesnt tell exactly when an earthquake will hit.
Does science has both negative and positive?
your question doesnt make sense
Why doesnt electric fences kill?
Electric fences are designed to deliver a short, sharp shock that is uncomfortable but not life-threatening to deter animals from crossing the boundary. The current and voltage levels used are typically low and regulated to be safe for animals and humans. Additionally, the electric pulses are intermittent and not continuous, reducing the risk of sustained exposure that could lead to serious harm or death.
