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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
What rechargeable battery has not memory?
Lithium-Ion (li-ion) batteries have no memory, new laptops use these
What are self-commutated voltage source inverters?
A self commutated is one which the means of communication is included with in the inverter itself.This is the case for circuits including electronic poer switches with turn off capability.
What is the meaning of rated power frequency withstand voltage?
The r.m.s of sinusoidal power frequency voltage that the equipment can withstand during tests under specified conditions and for a specified time
What role smart materials play in the construction of stealth aircrafts?
They Sold Tinned Egg For £8.34 actually it was £8.36!!!!
urmm no achillii they were £8.35!!! booo yaaaa!!!
The coils have constant voltage to them, each a branch of 1 or 2 coil power wires. the coil "fires" by alternately grounding and ungrounding the negative terminal of the coil. with the key in the "on" position (engine off) there should be constant power (battery voltage) to the positive terminals of the plugs of every coil. If you attach a test light to the positive coil terminal and probe the negative coil terminal on any of the coil plugs, then crank the motor, you should see the testlight flash. If the light stays on there is a short on the coil ground(bad wiring or the computer is keeping it on). If the light doesn't go on at all, the coil ground is open (broken wire or a driver in the computer burnt). If the light does flash and there is power on the positive side, the coil itself is probably bad.
A spreadsheet is a grid that is filled in with information. Most commonly, they're used to keep track of finances. The Microsoft program "Excel" will help you make spreadsheets, as will "Corel Word Perfect".
Why is the move The Wayward Bus 1957 staring Jayne Mansfield so hard to find?
No accident, sorry Jayne, the film was not that popular. it was adapted from the Novel by John Steinbeck. Steinbeck- who had seen what TV-Land did to ( the Grapes of Wrath_ inverting the tragic aspects to make a silly South-western sitcom ( Beverly Hillbillies)- well, he did not like the screen adaptation. Also there was a totally unrelated ( in plot content- though it might have involved a Bus Terminal)- film called Bus Stop. It was also a play- I understand both Jayne and Marilyn Monroe were in adaptations of the Bus Stop. Confusion of the very similar titles ( Wayward Bus, and Bus Stop) well some traffic congestion in filmland. Mr. Steinbeck was a Nobel Laureate and well, did not like how H-wood treated his usually serious novels.
Why don't magnets lose their pulling power over time?
they actually do loose their magnetism but it takes about 20 years
It is a game for the playstation and playstation2 video game systems. Dance Dance Revolution 2. It comes with a pad with arrows marked on it. The video game plays music and shows the pattern you are to follow with your feet on the dance pad. You earn points by keeping up with the dance moves. Personally I suck at it.
What happen to a bridge diode rectifier if one of the diodes is defected?
you have to have direct current to charge any battery
alternating current is constantly changing polarity in pulses back and forth
so when it sends electrons into a battery to charge it it alternates polarity and removes the charge from the battery
direct current never changes polarity it is a constant supply of power If one diode is removed or the defect in one of the diodes is a break in the circuit as apposed to the default allowing power to flow either way then you would get half wave rectification which is direct current in pulses it is not constant it would charge your battery but is inefficient use of your alternator as you would only be getting half the normal charge
If the faulty diode allows current to flow in both directions then you would get half wave rectification in one direction and a short circuit in the opposite pulse.I believe this would damage the alternator windings but i have no proof of this
half wave rectification has been used in the past but is not common as diodes are so cheap nowadays and because the alternator using half wave rectification was very inefficient
Which will normally have the larger resistance a voltmeter or an ammeter?
A voltmeter has the large resistance.The voltage across any component can be measured if & only if the terminals of that component will be open and this will we can acheiv if we connect the high resistance voltmeter across the open terminals of that component to measure the voltage.
Who founded Cypress Semiconductor?
Silicon Valley-based semiconductor design and manufacturing company Cypress semi corp was started in 1982 by T. J. Rodgers with several other people at the firm of Advanced Micro Devices. in 1986, with support from VC Sevin Rosen Cypress went public
I would imagine that reversing the leads would rectify that. (No pun intended.)
two or more processes are reading or writing some shared data and the final result depends on who runs precisely when, are called race condition.
What is the difference between a flip-flop and a latch?
flip flop:
-> it work's on the basis of clock pulses.
-> it is a edge trigerred , it mean that the output and the next state input changes when there is a change in clock pulse whether it may a +ve or -ve clock pulse.
latch;
-> it is based on enable function input
-> it is a level trigerred , it mean that the output of present state and input of the next state depends on the level that is binary input 1 or 0.
Both the flip-flop and latch are Sequential circuits....
- Flip flops are edge-triggered devices whereas latches are level triggered devices.
- latch does not have clock signal whereas flip flop does.
- Flip flop has two values while latch has only one value.
A: A flip-flop can be set reset and pass date with a clock a latch is a two state switch of or on
A flip flop will follow a clock a latch will remain status quo until it is unlatch. basically one does not use flip flop for latches and viceversa. both can be flip and latched by signals.
Will a circuit work if it has a breAk in it?
No because for electricity to go around in the circuit it has to be closed.ok here's how I learned it the wires to the electricity is is like the rollercoaster track to the car so if the circuit isn't closed or the rollercoaster track has a giant gap either the electricity won't go through or the people will fall
A: Since you know the current flow you need the voltage drop for this particular led at 20ma. All LED require a current and voltage to operate properly assuming a voltage drop of 2v then for a 12v source it becomes 12-2=10v 10v/.02=500 ohms in series to limit the current is required
Give the operating voltage of LED?
A; a LED can have a voltage of 1.8v to 5 or higher voltage whites and red are usually in the low voltage while green and blue are int he range of higher voltage
Explain the need for power consumption in CMOS circuits?
Even though it would seem that CMOS circuits require nearly zero power, that is only true when they are not doing anything, i.e. when the clock speed to zero.
When a conductor changes state, such as going from zero volts to five volts, it requires a shift in potential energy. If the conductor has capacitance, that shift requires current. Current times voltage is power. Power times time is energy. Even though the capacitance is very, very small, and the time is very, very short, energy is required to effect the change. Add to that the fact that you want to make this change very, very quickly, and that means you need more current - yes, for a shorter time - but you still need to look at power. Add up the millions and millions of conductors in a high end chip, and you see why they consume a lot of power and why they get hot - especially when you push the clock speeds.
A measurement of opposition to electric current flow in a component or circuit.
If the word unconnected was changed to uninsulated then this type of scenario would be known as a short circuit.
