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Electronics Engineering
Electronics Engineering is a branch of engineering that deals with practical applications of electronic components, devices, systems, or equipment. Electronics are devices that operate on low voltage sources, as in electron tubes, transistors, integrated circuits, and printed circuit boards and use electricity as part of its driving force.
24,372 Questions
Why is non inverting summing amplifier using op amp not used?
It is not true. The non-inverting summing amplifier is used all the time. It is an excellent Analog Signal Processing circuit. As an example, the bipolar to unipolar converter can be designed with a non-inverting summing amplifier.
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39 volt for maximun and 9 volts minimun
What is frequency response of a diode?
The frequency response is nothing but how fast the diode is responding for the given amount of voltage from source. The resulting waveform will be in the frequency domain representation system.
What is the functions of resistor?
It slows down the speed of the electrons , which are all passing through the resistor
What is the potential difference neede to send 2a through a 5 ohms resistor?
V=I*R -- Potential (Voltage, V) = Current (Amperage, I) * Resistance (Ohms)
2A*5Ohms = 10V
When is a capacitor like a 0.001 resistor?
A capacitor is like a 0.001 ohm resistor when the capacitive reactance is 0.001 ohms.
Capacitive reactance, in ohms, is defined as -1 divided by 2 pi f C, where f is frequency in hertz, C is capacitance in farads, and the -1 means that current leads voltage.
Plugging in 60 Hz, and solving for C, you get 2.65 farads. That is a very large capacitor. At 6000 Hz, you get 26.5 millifards, which is still very large. At 6 MHz, you get 26.5 microfards, but at 6 MHz, you need to consider parasitic inductance.
What is a pure sine wave inverter?
The sine wave is a mathematical function that describes a smooth repetitive oscillation. An Inverter is an electronic device that converts power from one voltage to another.
A pure sine wave inverter is a device that produces a smooth and consistent flow of electricity in the required voltage.
The benefits of a pure sine wave inverter are that the device requiring the electricity from the inverter will not suffer from surges and lows in power output and as such the connected device will perform a lot better.
What is the difference between a DIAC and a TRIAC?
A DIAC is simply a diode that breaks down at predictable voltage.
A TRIAC is a 3 terminal device that will conduct whether the anode is at a positive or a negative potential, controlled by a gate.
Another answer
They are AC versions of the SCR and diode respectively. Do you need more details?
What is reduced level excavation?
The ground which lies between the topsoil and earth's crust is known as the subsoil and comprises particles of weathered rock of various shapes and sizes. It is usually necessary to provide a level surface from which construction may take place, and this level may be lower than the top of the subsoil. In such cases, excavation into the subsoil is required to reduce the level of the ground. The volume of subsoil to be excavated, together with the nature of the material, will determine the type of machine and methods to be used.
Design and implementation of a buffer circuit using operational amplifier?
design and implementation of a buffer circuit using operational amplifier
Compute the reactance of a 2.50 uF capacitor at the frequency of 600?
Do it yourself. The equation is Xc = 1 / (2 pi f C). Be sure to convert microfarads to farards, first!
What does CBE stand for in transistors?
CBE, in transistors, stands for Collector-Base-Emitter. It is a designation that allows you to determine which lead is which. Each transistor has its own designation. Some might be BCE, for instance.
How do you determine if a transistor is leaky?
Ico is IC current with base open at least that is one of the leaks there more all with one terminal open. measuring is tough because of the current levels best bet curve tracer but very costly
120 v
The collector voltage is not necessarily approximately zero when a transistor has a collector-emitter short. It depends on whether or not there is an emitter resistor.
A typical collector-emitter circuit has two resistors, one in the collector and one in the emitter. One or both of them might be zero, i.e. not present, depending on design requirements. The collector-emitter junction represents a third resistor, the value of which is dependent on base-emitter vs collector-emitter current ratios and hFe.
If the collector-emitter junction is shorted, then this circuit degrades to a simple voltage divider, or single resistor, and the collector-emitter voltage differential will be approximately zero. Simply calculate the voltage based on the one or two resistances.
Results could be different than calculated, if the resistors are small in camparision to the shorted impedance, and it could be different depending on the base to emitter or collector relationship in that fault state, though the latter case is usually negligible due to the relatively high resistances of the base bias circuit.
What happen if the number of loops in the primary and secondary coils in a transformer are the same?
If the number of turns in the primary is the same as the secondary, this would be an isolation transformer. Primary and secondary voltages should match (minus the inherent transformer losses), as should the current.
A resistor is used to limit current flow through a capacitor.
If you did not use the resistor, you could potentially create large currents through the capacitor, damaging it. Capacitors do have current limit ratings - check the specification sheet for the capacitor.
Also, in the case of an electrolytic capacitor, if it is generally in a discharged state then it is necessary from time to time to reform it. That process involved slowly charging it, i.e. through a resistor, and then letting it discharge by itself with no or little load. The resistor protects both the capacitor and the voltage source in the case that the capacitor might be shorted.
What are common efficiencies for transformers?
Transformer utilization factor is the ration of power delivered to the load and ac rating of the transformer secondary.
What is diode average resistance?
an average resistance of a diode is the mean average of its statistical values gather with extensive experiments with a plot data resistance average.
What are the Advantages and disadvantages of cyclic redundancy check?
Advantages: CRC is simple to implement in binary hardware, Mathematical analysis of CRC is very simple, and it is good at detecting common errors caused by noise in transmission.
Disadvantages: CRC is not suitable for protecting against intentional alteration of data, and overflow of data is possible in CRC.
Impedance is a vector sum using the formula Z = square root (XL2 + R2); where Z = impedance, XL = inductive reactance, and R = resistance. Therefor the formula for a circuit where XL = 64ohm's and R = 36ohm's is Z = square root(642 + 322); Z = 71.6ohms.
