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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
FET stands for Field Effect Transistor.
The name FET comes because the gate current of a field effect transistor is zero and current present in the source conductor is due to an electric field produced by the substrate material placed between the gate and the source.
To answer this question the voltage of the compressor is needed.
How do you find voltage across capacitors in a serial parallel circuit?
Voltage across all parallel capacitor's is same i.e. it is equal to supply voltage, it can be measured using digital volt meter (any high input impedance volt meter).
When capacitors are in series; voltage drop depends on charge stored in the capacitor. it can be given by the formula V x V = 2 / (joules x capacitance). This voltage can also be measured using digital volt meter.
How do you use an Allen bradley counter?
You can use the Allen-Bradley counter to standardize your design.
Blondel's Theorem tells us that, to measure the total power of a three-phase load (balanced or unbalanced), we can use one less wattmeter than there are conductors supplying that load.
So the two-wattmeter method will work for anythree-phase load, provided there are only threeconductors supplying that load, e.g. three-wire delta or three-wire star (wye).
Bear in mind that wattmeter's read true power (expressed in watts) and ignores the reactive power of inductors and capacitors.
What is the cost of an ultrasound machine?
A median comparison price is $115k USD. There are many websites that offer both new, used, and refurbished units for sale. Below are some links for you to do some comparisons, and speak with your Mom to leaarn some particulars about the exact kind of machine you need to look for. Links below: www.absolutemed.com/Ultrasound-Machines www.nationalultrasound.com www.ultrasoundmachineguru.com
What is junction temperature of the transistor?
The junction temperature is limited by the relationship between temperature and life, and the characteristics of the materials composing the transistor. Furthermore, transistors use minority carriers and thus are easily affected by temperature. In particular , if the temperature rises in a reverse-biased collector-base junction, carriers are generated without relation to the signal, the operating point shifts, and in the worst case thermal runaway occurs and the transistor becomes damaged. For this reason, the circuit must be designed so as to prevent the junction temperature from rising. Transistor deterioration occurs quickly when the junction temperature rises.
In a common emitter transistor the primary purpose of a resistor connected to the emitter is to?
The emitter resistor in a common emitter configuration provides negative feedback to the transistor, reducing both its voltage gain and distortion.
Just solve the problem with the principles learnt in class.
Its a device have almost non-existent resistance , that can easily let electrical current to access in only one way. It's like two Semiconductors Cohered one Negative and one Positive. It is used to transform the current from Hesitant to Constant , and other uses.
Why the automatic frequency control function is usually not necessary in today's FM receivers?
AFC was used to provide an electronic means to stabilize the frequency of a circuit. Older receivers and transmitters used a tank circuit, made of an inductor and capacitor to select frequency. Since both the inductor and capacitor are physical objects, their sizes and properties vary with temperature, humidity, age and other factors. Also to be able to tune the frequency, at least one of them had to be deliberately made to be mechanically alterable to change it's electrical properties. These factors caused the frequency to slowly drift over time. Also, the tuning was usually accomplished in a continuously variable way, so it was difficult to confirm an exact tuning to the station which could lead to loss of sensitivity or distortion of the signal. AFC used electronic feedback to fine tune the tank circuit by a (usually) electrically tuned component.
Modern radio equipment tends to use a quartz crystal oscillator of a fixed frequency as a reference. Quartz crystals can easily be made stable in frequency to 50 parts per million. This is sufficiently accurate to not need to compare it with the frequency of the incoming signal, itself derived from a stable crystal source. The radio is usually tuned by a frequency synthesizer controlled by the crystal.
Both AFC and the frequency synthesizer method use an electrically tuned variable frequency oscillator to tune the radio. The difference is that AFC used characteristics of the received signal to measure and correct the mistuning, while frequency synthesizers compare the tuning with crystal reference. AFC cannot find the frequency you desire to tune, it only fine tunes it once you select it. The frequency synthesizer accurately tunes the radio to whatever frequency you ask it.
Why can't the resistance cannot be measured with ammeters and voltmeters?
It can be calculated by a multimeter. [aka. avometer (ampere voltage ohm meter)]. A single voltmeter or ammeter could not measure resistance because this process need calculations. That means the device must be able to measure the voltage and current at the same time.
Why the laser diode biased forwared biased?
i think in order to population inversion in depletion region. also the laser diodes must be degenerated.
Derive the output equation for differential amplifier and instrumentation amplifier?
Vo=(R2/R1)(V2-V1)
Do you need to charge your capacitor before you install it?
Yes you must charge it before hooking it up. You can charge it with a 12 volt light bulb with leads or a voltmeter.
If a voltmeter is hooked up in series it will?
It will prevent almost all current from flowing the circuit, since a voltmeter has a very high electrical resistance. Only ammeters (or milliammeters) should be wired in series between a power source and its load.
Will a lower ohm speaker produce more power?
It seems like it would the fact is for maximum power the amplifier output impedance matching the speaker impedance is the factor
Since Voltage = Amps * Ohms, as the resistance increases, it will require more voltage to maintain the same current, so higher resistance will take more power. However, if the voltage is constant, the current will decrease with more ohms, so, basically, the answer to your question is yes.
The gain of a class A, common emitter BJT amplifier, a fairly standard configuration, is defined as collector resistance divided by emitter resistance, or as hFe, whichever is less. Assuming that we are operating in a linear mode, and hFe is not a limiting factor, then the emitter resistance being greater than the collector resistance simply means that the gain is less than one.
I don't know, but I think he was a technical engineer.
What limits output of an operational amplifier?
Feed back resistance plays the vital role of controlling output of the OPAMP.
Also surrounding temperatures affects the out put of OPAMP.
ANSWER: The gain drives the output to either B+ or B- minus the saturation of the output circuitry
