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EFIS EICAS

EFIS IS THE SCREEN WHICH SHOWS INFORMATION ABOUT THE POSITION OF THE AIRCRAFT, angle, DOWN, AND ALL ON POSITION AND STATUS OF AIRCRAFT IN THIS ONE SCREEN IS SEEKING TO REPLACE ALL THE INSTRUMENTS OF THE AIRCRAFT.

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EICAS SYSTEM IS A SHOW YOU HOW THE SYSTEM IN A DISPLAY ALL THE FEATURES AND THE STATE OF THE AIR, AND EACH OF ITS VARIABLES.

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GLOBAL POSITIONING SYSTEM TCAS

SYSTEM Gloval POSITION LOCATION IS A TOOL OF SOME COORDINATES BY WHICH YOU PROVIDE A SERIES OF DATA SUCH AS:

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GPS works by triangulating SATELLITE DATA IN WHICH THEY WORK 24 satellites, 3 1 / PERFORMANCE SATELLITE AVAILABLE.

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collision avoidance systems and

TRAFFIC ALERT

works without traffic control stations tierra.Este air system is used to detect the presence of other planes that are near us, which must be equipped with "transponders" that answer the question of the radar in "C" or "S".

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FAMILY SYSTEMS TRANSDUCERS

a transducer system is best known as a sensor which fulfills the function transforms a physical phenomenon into an electrical signal and in turn can also be modified to transform a electrical signal into a physical phenomenon, eg

temperature sensor torque sensor

motion sensor

potentiometer sensor inductive sensor

field sensor

among others.

most sensors used in industry to optimize their processes and make an organized and precision of each of the processes

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MOSFETs are as FET, but with a different operation. Also activated by tension in the door and pass a drain current supplier, but its internal structure is different. It is a field-effect transistor, but built with a metal oxide layer (MOSFET = Metal Oxide Semiconductor Field Effect Transistor).

CMOS technology is an integrated circuit construction. There is the TTL, CMOS, ETL, RTL, DTL, ... CMOS technology is characterized by: - \u200b\u200bhigh voltage range (3V - 18V approx) - slow to medium - very insensitive to noise a logic family is used both for the technology (TTL family, ...) and for subtecnología (HCT família, ...). The

subtecnologías stands following the technology. Serve to tell us that the chips have extra features. Example: Family 74HSxxx 74 (TTL) Subfamily HS (High Speed \u200b\u200bShckottky) The CMOS begin 40xxx

FAMILY CLASSES MOS is derived in

PMOS (P-type MOS)

NMOS (MOS-type N)

CMOS (Complementary MOS)

BiCMOS (Bipolar CMOS)

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MOS TTL (Transistor-Transistor Logic)

With the rapid development of integrated circuits (ICs), were found new problems were and new solutions were developed. One problem with DTL circuits was taking much more space in the structure of the IC to build a transistor diode. Since the "real estate" are exceedingly important in ICs, it was desirable to find a way to avoid requiring a large number of diodes in the input. But what could be used to replace many diodes? Well, watching the DTL NAND gate at the top, you might notice that the opposing diodes are quite similar to the two junctions of a transistor. In fact, if we had an investor would have a single input diode, and it might be possible to replace the two diodes opposed by an NPN transistor to do the same job.

In fact, this works quite well. The figure above shows the resulting inverter. We can also add multiple emitters to the input transistor without worrying about the increase in the amount of space required on the chip. This allows us to build a multi-input gate in the same space as an investor. The resulting savings in real estate translates to significant savings in manufacturing costs, which in turn reduces the cost to the user of the device.

A problem shared by all logic gates with one output transistor's collector resistor is the switching speed. The transistor actively pulls down the output to logic 0, but the resistor is not active in pulling the output up to logic 1. due to unavoidable factors such as capacitance of the circuit and a characteristic of bipolar transistors called "charge storage," will take a certain amount of time the transistor to fully turn off and the output rises to a logic 1 level. This limits the frequency at which the gate can operate. Designers of commercial doors TTL IC reduced this problem by modifying the output circuit. The result was "the output circuit totem pole" used in most of the 7400/5400 series TTL ICs. The final circuit used in the majority in the standard TTL is shown in the top part. Does the number of entries may vary? a commercial package IC investors could be six, four 2-input gates, three 3-input gates, or two 4-input gates. An 8-input gate in a package is also available. But in each case, the circuit structure remains the same, differing only the number of entries.

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ECL (Emitter Coupled Logic)

can operate at frequencies above 500 Mhz.


gate propagation delay of 0.3 nanoseconds.


dissipation of 60 milliwatts per gate.

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DTL (Diode-Transistor Logic)

As stated on page diode logic, the basic problem with the gates of DL is that the logic signal deteriorate rapidly. However, working for a stage at a time, if the re-amplified signal between the doors. The Diode-Transistor Logic (DTL) achieves that goal.
The top door is a door or DL \u200b\u200bfollowed by an investor as seen in the page resistor-transistor logic. OR function is still performed by the diodes. However, regardless of the number of entries in the logic 1, is surely enough input voltage to drive the transistor into saturation. Only if all inputs are at logic 0 then the transistor will remain off. The advantage of this circuit on the equivalent of RTL is the logical OR is performed by diodes, resistors next. Therefore there is no interaction between various inputs, and any number of diodes can be used. A disadvantage of this circuit is the input resistor to the transistor. Their presence tends to slow the circuit the low state, thus limiting the rate at which the transistor can switch states.

At first glance, the NAND version shown above should eliminate this problem. Can any logical 0 input immediately pull down the base of the transistor and switch transistor off state? Well, not quite. Remember that the input voltage of 0.65 volts base for the transistor? The diodes exhibit a voltage bias very similar when conducting current. Therefore, even with all the entries in the land, the base of the transistor will be about 0.65 volts and the transistor can drive.

To solve this problem, we can add a diode in series with the base of the transistor, as shown above. Now the bias voltage is needed to polarize the transistor is 1.3 volts directly. For even more secure, we could add a second diode of the series and require 1.95 volts to drive the transistor. In this way we also make sure that temperature changes do not significantly affect circuit operation. Either way, this circuit will work as a NAND gate. In addition, we can use as many diodes in the input as we want without raising the threshold voltage. Furthermore, without the resistor in series in the input circuit, there is less effect of delayed, so the door can switch states faster and handle higher frequencies.

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RTL (resistor-transistor logic)

RTL is the acronym Resistor Transistor Logic or resistance-transistor logic. It was the first logic family to appear before the integration technology. Belongs to the category of bipolar logic families, or involve the existence of two types of carriers: electrons and holes.

This type of network, presents the phenomenon called power grab that occurs when multiple transistors are coupled directly and input characteristics differ slightly from each other. Then one of them lead before the others placed in parallel (monopolize the flow), preventing the proper functioning of the rest.

This circuit arrangement has the disadvantage that with the addition of resistance Rc increases the switching delay, having to be loaded and unloaded through the same input capacitance of transistors but on the other hand, has the advantage of increased output factor (fan -out). Therefore, in the design of these circuits is necessary compromise between output and factor switching delay. Normal values \u200b\u200bare output by a factor of 4 or 5, with a switching delay of 50 nanoseconds.
other hand, has a relatively poor noise immunity. The noise margin voltage to the logic 0 threshold voltage is about 0.5 volts, but voltage logic 1 to the threshold voltage is only about 0.2 volts.

may improve travel time by adding a capacitor in parallel with each of the resistors Rc, which would get a new logic family, to be called RCTL. However, the large number of resistors and capacitors difficult to integrate so much the technique, such as RTL, not used in modern designs but can still be found in very old equipment.

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DIODE LOGIC (DL)

A device commonly used in electronics is the diode by its many uses, in which one of them is the logic, which will be given very important use but at the same time very simple, consisting of a diode, along with a set of resistance to prevent destruction or deterioration of the diodes.

According to the diode configuration as shown in the figure, the logic levels consist of the following: Value
voltage levels 0 volts or ground its output will be 0.
voltage value at 5 volts or bias its output will be 1.

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LOGIC TYPES OF FAMILIES

• Within the logic families are:
• 
  DL (Diode Logic)


• 
  RTL (resistor-transistor logic)


• 
  DTL (Diode-Transistor Logic)


• 
  ECL (Emitter Coupled Logic)


• 
  TTL (Transistor-Transistor Logic)


• 
  MOS (Oxide Semiconductor Metal)
• 
  PMOS (P-type MOS)
  NMOS (N-type MOS)
  CMOS (Complementary MOS)
  BiCMOS (Bipolar CMOS)

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families have been logical address at one of the most important developments in history, have become the right hand of the designers of new technologies and have a wide range of functions, which can be used depending on the application required by the user, then an explanation of the classification of each types of logic families that exist and what each one and thereby come to understand the importance of families and how logical it may give a better probecho the tools we have.