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What is a PUT thyristor?
put (programmable unijunction transistor) he Programmable Unijunction Transistor behaves much like a unijunction transist or (UJT), but is "programmable" via external resistors (that is, you can use two resistors to set a PUT's peak voltage). Note that the name is a bit of a misnomer -- as a thyristor, it is a four layer device, unlike a true unijuncti on transistor which has but two layers. Like other thyristors, a PUT looks much like a junction transistor with a fourth layer and therefore a total of three P- N junctions. Meanwhile, a third terminal, the gate (G), makes a PUT function like a hybrid of transistor and diode: PUT symbolPUT cross-section PUTs are not often used in BEAM; they're essentially special-purpose devices in electronics, used for lightingcontrol, motor speed control and othervariable power applications. In combination with an SCR they can, though, makea mean solar engine. In a pinch, you can build up something much like a PUT from discrete transist ors wired as a complementaryfeedback Here, as soon as any current flows in either transistor, this current becomes base current for the other transistor, and both transistors turn on hard. This means you can only build up this circuit using low-leakage transistors ('though this should be the case with any decent- quality modern transistor ).
Why photodiode works only in reverse bias not in forward bias?
The fractional change due to intensity on minority charge carriers is more than on majority charge carriers. When light is directly polarized it acts like a normal diode but when reverse polarized its current depends on the brightness (intensity of incident light).
Basic construction of zener diode?
A zener diode has a heavily doped p-n junction allowing electrons to tunnel from the valence band of the p-type material to the conduction band of the n-type material, such that the reverse voltage is "clamped" to a known value, called the zener voltage.
Why was there a name change on Roseanne?
Do you mean Davids name bacause it was David in the script but he was playing another character in another show but in his reappearance the show was cancelled. Roseanne makes a joke about it in the series and its ment as a JOKE.
Who makes more computers IBM or General Motors?
IBM. GM does not manufacture computers. The ECU's in their vehicles are manufactured by another company.
How many diode makes one transistor?
When investigated with an ohm-meter, a transistor resembles two diodes connected "back-to-back". But you can't make a transistor by connecting two diodes back-to-back.
What element makes transistor?
A transistor is mainly composed of silicon and germanium
How do LEDs work?
L.E.D. Stands for Light Emitting Diode so it is a Diode that makes light...
Do you believe that every species is connected to one another?
Every species is connected to one another and they have varied relationships. The interconnectivity of the species is what makes the ecosystem functional.
Why diode logic gate is not suitable for cascading operation?
the pullup or pull down resistance in the diode logic gate makes it a high output resistance device.If u try to drive another diode logic gate with it the output voltage of the first gate will be affected by the resistance in the second gate.A diode logic gate should always drive a high input resistance input.
Where are the power transistor located?
This question makes no sense. Please clarify.
What element makes up a transistor?
Silicon and Germanium are often seen in transistors.
What is a laser diode?
It's what makes the light !
Does a pn junction diode emit light?
I don't think that the pn junction diode can emit light. Maybe it does, but a 'plastic' that covering the diode makes the light cannot be seen. Besides, you won't see it glow as it connect to the power source, right?
Is forward voltage drop of schottky diode more than tunnel diode?
Yes, the forward voltage drop of a Schottky diode is usually more than the forward voltage drop of a tunnel diode. A Schottky diode voltage drop is between approximately 0.15 to 0.45 volt. The interesting thing that makes a tunnel diode different from other diodes is its "negative resistance region" with a "peak current" around 0.06 volt and a "valley current" around 0.30 volt.
When a PNP transistor is connected in a circuit in the manner shown in Figu 52 his?
This question makes no sense. If more information had been given - concerning at least some details about "the manner shown in Figure 52" - then someone might have been able to give a better answer than this one...
Is there a spiritual symbolism connected to a roadrunner who visits and sits at your windowsill for a couple of hours every morning?
Depends on how it makes you feel one way or another.
