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What else can I help you with?
Is fwd break over voltage is greater than reverse breakdown voltage i.e VboVbr?
forward breakover voltage is slightly smaller than reverse breakdown voltage
What is the primary difference between a zener diode and PN-junction Diode?
ZENER DIODE IS MADE TO REVERSE BREAK OVER AT A CERTAIN VOLTAGE the break over knee is not exactly sharp especially in low voltage zeners. and p-n means positive and negative junction
What is the reason for putting a voltage rating on resistors?
Due to the physical construction and size of the resistor, at a certain voltage, the insulation will break down and the applied voltage will arc over. This is generally bad. Operating the resistor within its voltage rating will prevent this failure mode.
Why antiparallel SCR are preferred over TRIAC?
For power control of inductive load.They can be successfully used for resistive load as well.
What is a thyrector diode?
A Thyrector is essentially two zener diodes connected back-to-back in opposing polarity which means it will not conduct until an over-voltage above its break-down voltage rating occurs. This is used to trap voltage spikes and suppress them.
How do you define Repetitive Peak off-state Voltage VDRM?
If the MT2 voltage exceeds VDRM such as might occur during severe and abnormal mains transient conditions, MT2-MT1 leakage will reach a point where the triac will spontaneously break over into conduction.
Is fwd break over voltage is greater than reverse breakdown voltage i.e VboVbr?
forward breakover voltage is slightly smaller than reverse breakdown voltage
What is the primary difference between a zener diode and PN-junction Diode?
ZENER DIODE IS MADE TO REVERSE BREAK OVER AT A CERTAIN VOLTAGE the break over knee is not exactly sharp especially in low voltage zeners. and p-n means positive and negative junction
Which voltage is greater in thyristor whether forward break over or reverse breakdown voltage?
It is stated that one of the voltage is greater in thyristor whether it be forward breakover or reverse breakdown voltage. It is also stated that the greater of the 2 voltages in thyristor is the forward breakover voltage.
What is the reason for putting a voltage rating on resistors?
Due to the physical construction and size of the resistor, at a certain voltage, the insulation will break down and the applied voltage will arc over. This is generally bad. Operating the resistor within its voltage rating will prevent this failure mode.
Why antiparallel SCR are preferred over TRIAC?
For power control of inductive load.They can be successfully used for resistive load as well.
What is a thyrector diode?
A Thyrector is essentially two zener diodes connected back-to-back in opposing polarity which means it will not conduct until an over-voltage above its break-down voltage rating occurs. This is used to trap voltage spikes and suppress them.
What is medium and high voltage?
Medium voltage is over 1000 v, high voltage is over 45 kV.
Which is better adding coils or upping the voltage to improve an electromagnet?
Upping the voltage is the easiest method to do but you have to be careful of the insulation rating of the wire in the electromagnet coil. As the voltage goes up so does the current and the heat produced by this action. By over exceeding the voltage rating of the wire this will cause the insulation to break down and short the coil out.
Why is voltage split over a series circuit?
Voltage drop due to the resistance present in the series circuit causes voltage split over a series circuit.
Advantages of silicon over germanium?
silicon has a wider bandgap than germenium .silicon jeakage current small, easily available then Ga and break down voltage is more. knee voltage of si is 0.7and Ga is having 0.3then Si is very useful.
Operation of a triac?
A TRIAC is a three terminal device that can operate an AC load, either in On-Off mode, or in modulated mode, such as in a lamp dimmer. The three terminals are M1, M2, and Gate. The AC source and load are connected in series with M1 and M2. If the Gate is held near the voltage of M1, the device does not turn on. If the Gate voltage is towards the direction of M2, the device turns on. Once the device turns on, it stays on for the duration of that line cycle, i.e. until the voltage between M1 and M2 reverses. The actual trigger point varies depending on the specific device, so you need to look it up in the specifications for the device. Note that the positive going trigger point is often not the same magnitude as the negative going trigger point. This can cause asymmetry in the output power, leading to a DC bias that is often not desired. Most designs compensate for this by providing another TRIAC operating in DIAC mode (or just a DIAC) in series with the Gate. The DIAC is simply a TRIAC with the Gate connected to M2. This mode will trigger based on M2, rather than on Gate, and is symmetrical. Using a DIAC as the trigger for a TRIAC will balance the output waveform, minimizing DC bias. If you design the controlling circuit so that the trigger point in the cycle is adjustable, you get a variable voltage switch, i.e. dimmer, that can be used for various things. The advantage of this over a rheostat, is that the TRIAC is fully conducting when it is turned on, so the power dissipated by it is relatively small, because the voltage differential is small, whereas a rheostat would need to dissipate at least half the expected power of the load.
