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Why current leads in capaciter?
Capacitors resist a change in voltage. It takes current to effect a voltage change, resulting in the current "leading" the voltage. Similarly, inductors resist a change in current. It takes voltage to effect a current change, resulting in the current "lagging" the voltage.
Does voltage drop have an important effect?
A: IN transistors it is very important since they themselves are voltage amplifiers
What is the effect of an RL circuit in half wave rectifier?
The effect of an RL circuit in half wave rectifier is that the voltage output wave forms for current and voltage will be modified .
When are electromagnets used to increase or decrease the voltage of electric currents?
Electromagnets are never used to increase or decrease the voltage in a circuit. These magnets in conjunction with a rotating device (an armature) can create a voltage but the do not have any effect on a voltage.
What is reverse piezoelectric effect?
The Piezo-Electric effect is when an electrical voltage induces a movement in certain solid crystals, ceramics, bone, etc. It also is the reverse effect, where movement or strain of that material induces an electrical voltage. The small piezo disc in the back of your alarm watch is one example, generating a tone from an AC signal. Another example of the reverse effect is the starter on your gas grill, generating thousands of volts from the snap action of the impact from the trigger hammer.
When excessive voltage is applied to a capacitor it will break down What factor of the capacitor has the greatest effect on breakdown voltage?
The dielectric material between the plates.
What can electric current produce?
Voltage. Or, if you prefer, electromotive force (emf). What creates voltage? Electromagnetic action. Electrochemical action. Piezoelectric effect. Photoelectric effect. Thermoelectric effect. Contact electrification (static electricity). What was left out? BREAKDOWN produce in a crystal
What an electric current can produce?
Voltage. Or, if you prefer, electromotive force (emf). What creates voltage? Electromagnetic action. Electrochemical action. Piezoelectric effect. Photoelectric effect. Thermoelectric effect. Contact electrification (static electricity). What was left out? BREAKDOWN produce in a crystal
Why zener breakdown and avalanche breakdown increases with temperature?
effect of temperature on zener & avalanche breakdown
Why you use capacitor with voltage regulator ic 7805?
in ic 7805 their is two capacitor is used one of them is used for the settling/transient time and another is used to provide inductive effect....
What is tunneling effect in zener diode?
In a Zener diode, tunneling effect occurs when charge carriers are able to pass through the thin depletion region by quantum mechanical tunneling. This allows the diode to start conducting at lower voltages than normally expected. The tunneling effect in Zener diodes is responsible for their ability to regulate voltage by maintaining a constant breakdown voltage.
What is the effect of surge arrester on increase the voltage in medium voltage circuits?
What is the effect of surge arrested on increase the voltage in medium voltage circuits?
Can a zener diode be used as rectifier diode?
Yes it can be done. Usually, this type of diode is called zener shunt voltage regulator or shunt references; it can be a 2 or 3-terminal device. Two terminal devices rely only on the zener b2b tunneling quantum breakdown effect for generating a fixed voltage drop. Three terminal devices work in closed loop: you put a voltage divider at the output and feed the divided voltage to the additional "control terminal", so that a closed loop is used to compensate temperature and load variations. You can check LM4041 datasheet as an example.
Why zener diodes are heavily doped?
Zener diodes are heavily doped to create a narrow depletion region, allowing them to operate in the reverse breakdown region where they exhibit the Zener effect. This effect causes the diode to conduct in reverse bias at a specific voltage, ideal for voltage regulation applications.
Difference between avalanche and zener breakdown?
A: There is no difference except for a zener its breakdown is known and predictable. Avalanche breakdown is not predictable and usually happens at hi voltage and because of it if the current is not limited it self destroy the device
What is the effect of diode voltage drop as the output voltage?
The effect of diode voltage drop as the output voltage is that the input voltage will not be totally transferred to the output because power loss in the diode . The output voltage will then be given by: vout=(vin)-(the diode voltage drop).
What effect does low impedance have on voltage regulation?
raised voltage output
