Why was the field effect transistor invented?
Field-effect transistors were invented by Julius Edgar Lilienfeld in 1925 and by Oskar Heil in 1934, but practical devices were not able to be made until 1952 (the JFET). The MOSFET, which largely superseded the JFET and had a more profound effect on electronic development, was first proposed by Dawon Kahng in 1960.
77 ohms and 16 amps are tied together how many volts would that be?
If E=I x R then it would require 1232 volts to push 16 amps through a 77 ohm resistance.
ECL or emitter coupled logic is faster than TTL type logic because the switching transistors do NOT go into saturation in either the on or off state. The switching time from saturation in a high output to saturation in a low state like TTL requires that the junction capacitance be overcome and that the charge in the saturated junction get swept out.
ECL is sensitive to a threshold level only.
What is phase angle error of current transformer?
The angle between the expected and actual secondary current is known as phase error.
Why is low voltage used to control high voltage?
Switching High voltages requires more substantial apparatus.
High voltage electricity can arc further and therefore distances between contacts need to be larger. This has cost and size implications.
Youy dont want a massive throw switch in your tiny state of the art piece of equipment.
Also the contacts in high voltage equipment are bigger as the voltage will erode smaller contacts quickly. This also raises cost.
V = I*R
If you solved this for resistance, this means you would have:
V/I = R
You set V = .9 volts, I = 1 amp, and solve to get .9 Ohms.
Where are all the transistor parts for bully?
1 transistor you can find when you starta little help quest it will show on the mini map.
2 the next one is in the nerd hideout when yougain acess of bull town.
3 in bulltown go to the top of the town on the bridge there will be a transistor on the ground.
4 near the end of chapter 1 during help gary in the basement will be another.
5 near a mexican reastraunt go to the back jump the gate and near the back is whereit is.
6 the final transistor is in the uper right corner of bulltown it is in a little cuby.
What is the difference between power semiconductors and semiconductors?
power semiconductors
power semiconductors can drive large currents during forward bias
semiconductor
semiconductors drive small currents during forward bias
Mathematics representation of converting electrical signals into electromagnetic waves?
i think mathematics representation of converting electrical signals in to electromafnetic waves means as we know signals are represent by mathematical equation that is by function.and all signals are represent by function,so since function can have its own wave properties the same as it also have electromagnetic waves . here is my address "mebrahtomwelu@rocketmail.com"
What is the necessity for balancing wheatstone bridge?
just to find out our given unknown resistance value
or to put it another way, To find the value of the unknown resistor attached.
What voltage must be applied to a 6.4-ohm lamp filiment to develop 20 amperes of current t?
I x R = E
20 x 6.4 = 128 Volts
What is the function of the oscillator in a cw transmitter?
It is the engine of the transmission system. It determines the frequency of where the CW transmission happens. CW transmission is the most efficient form of transmission. The majoity of power in this system is used for actual transmission and not for modulating a signal.
Why input impedance is in parallel and output impedance is in series?
That is not the case. Scroll down to related links and look at "Measurement of input impedance and output impedance".
When should you not wear a wrist strap when working on your PC?
The wrist strap is used to prevent static charge buildup, which can arc from you to the PC, and potentially cause damage.
Because of this, there is no time when you should NOT wear a wrist strap. It may not be needed at all times, but it certainly doesn't cause an issue if you do.
I do not always use this; when it is warm and damp, static charge buildup is less of a problem. Also, if you are working in an area away from things that naturally help build up charge on your person (shag carpet, wool,...), it because less of an issue. But there is always some level of risk involved when working inside a computer and not having this.
How do you convert a clone motor to a alcohol motor on a racing kart?
On a race motor, to convert to alcohol, the only real thing we have to do is put all stainless steel in the carb. The brass will not hold up to the alcohol. If I recall the flame travel, or rate of combustion is slower on alcohol, so, we advanced the timing, I think, and richened, I think, the air fuel mixture. Another neat footnote, whereas you had to keep your car cool, now, you will have to keep it warm. Alcohol burns much cooler than gas, thus lowering your operating temp, leading to sluggish acceleration, and part failure.
What distinguishes a switching power supply from other power supplies?
Normal power supplies are on all the time while switching type are on and off periodically which results in precise control and improved efficiency.
For what purpose you use fourier transform in real life?
we use fourier transform to convert our signal form time domain to frequency domain.
This tells us how much a certain frequency is involve in our signal.
It also gives us many information that we cannot get from time domain.
And we can easily compare signals in frequency domain.