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Electronics Engineering

~32800 answered questions
Parent Category: 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.
Simple is just to know two formulas Ohm's Law V = IR Power P = IV From those you can calculate voltage, amps, watts, ohms V = Voltage (volts) I = Current (amps or amperes) R = Resistance (ohm's) P = Power (watts) Just solve for what you are missing. Voltage times amps being drawn shows wa…
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You cannot. It must be taken out of the circuit and then tested on its own. That's not 100% true because, if it has wires at its ends, you can cut through one wire with an appropriate tool and then test the capacitor "out of circuit". If the capacitor is ok you can then re-join the two cut wire end…
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%DETAILS% Answer Hey John==On the intake close to the EGR there is a solonoid that has wires and vac lines going to it. Make sure the wires are connected and not shorted. GoodluckJoe
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Hey Justin==If you would state the kind and year of car you have it would be easier but some cars have fuseable links and some are in the fuse boxes under the hood and some are at the starter. Good luckJoe
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Answer my 1994 s10 has manual mirrors, windows and doorlocks but when i removed the door panels to replace the outside mirrors (AGAIN!) I saw that I am already wired for the electric stuff, i just have to pay more $$ for the electrical version of the part and plug it in! try going on ebay, most …
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Without knowing what you have for a regulator, I can't say this will help. I did one last spring for a friend on his old antique boat. It is a 6v system which we changed to 8v (positive ground at that).This regulator is on a generator, not alternator, probably same as you, basically a small metal bo…
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A diode is a one way valve for electricity. It will allow current to flow in one direction but not in the opposite direction.
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Any voltage that is fed into or "applied" to an electrical circuit is referred to as an "applied voltage".
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Diodes allow current to flow in one direction only thus changing the alternating current produced inside the "alternator", to direct current which is required by your car's electrical system.Think of them as check valves for liquids.Denis
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These recommendations depend on the height and size of the room, the season, and the activity taking place in the room. Keep in mind that warm air rises to the top and cold air settles on the bottom. Air settles in layers from warm at the top to cold at the bottom, if left alone at equilibrium. Cei…
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The way I have 110VAC/60Hz is to take 12DC power supply and 12DC to 110AC 60Hz converter, designed for car use and can be found in the netshops. The way that industry used to do this is to run a motor-generator combination. The motor is matched to and runs from the available power supply while the…
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Technology, current at the time of US electrification, locked the US into 110, then 120 volt outlets. Europe's electrification came later, and proceeded in response to advanced technology. The US was too deep into the 110/120 volt infrastructure to upgrade. The US has remained in this situation ever…
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Absolutely.As long as the converter (or any power source) is rated at the same voltage, with more current than the device needs. Sometimes, a device may have a higher initial current surge than it's operating current, keep this in mind. Some converters do a good job handling momentary surge, some do…
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With direct current, the charge flow is distributed throughout the cross-sectional area of a conductor. With alternating current, the charge flow tends to flow towards the surface of a conductor due to what is called the 'skin effect'. The higher the frequency, the greater the skin effect. In fact,…
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Circuit breakers can often trip when a light bulb fails just at the point when you switch on the light. The reason it happens is that, in normal use, the bulb's filament gets thinner and thinner and more and more brittle over time. Eventually it is about to fail - also known as "burn out" - but it …
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Amperage, or current, is a measure of the amount of electrons moving in a circuit. Voltage is a measure of how much force those electrons are under. In a circuit, say a light and switch in your home when the light is on there there is a voltage across the filament of the bulb that is pushing amper…
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If the meter was set for "current" (amps) and the leads were connected to the current input, you hope it will read 0. -- It should blow the fuse inside. If the meter is set for volts AC, it should read anywhere between 108 and 132 volts. If the meter is set for volts DC, it should read close to ze…
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Definetely, in 23 yrs I have never had a case that would allow the wire/breaker to remain.
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Three-phase motors will run on single-phase power. What they WON'T do is start. There is no easy way to re-wire such a large motor to run on a single phase. Properly sized capacitors and a special relay is sometimes used on sewage lift stations (poopie stations is what we call them) to run the 3-ph…
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Less expensive - Several miles of optical cable can be made cheaper than equivalent lengths of copper wire. This saves your provider (cable TV, Internet) and you money. Thinner - Optical fibers can be drawn to smaller diameters than copper wire. Higher carrying capacity - Because optical fibers are …
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Complementary Metal Oxide Semiconductor.In computing the term CMOS is often used to mean the non-volatile memory that stores motherboard BIOS information. This was called the CMOS RAM or just the CMOS because it usually used a low-power CMOS memory chip, powered by a small battery. The term remains …
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here r many ways 1. Use controllers with IP interface and connected to a hub. You can control via your web browser. 2. by PC parallel portAlso check out this website called http://www.x10.comI bought some stuff from them a while ago. its pretty cool.
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IPC means Inter Process Communication. Two processes can communicate with each other using these Mechanism. They can use shared memory ,Pipes FIFO's Semaphore,Signals.They can send signals and they can kill each other.They can stop the process by sending the signal.They can share data using Shared …
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History of the Walkie Talkie A walkie-talkie is a hand-held portable, bi-directional radio transceiver. The first walkie-talkies were developed for military use. Major characteristics include a half-duplex channel (only one radio transmits at a time, though any number can listen) and a push-to-ta…
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A wide array of robotics components and devices are available at robohaat.com
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Simply set the multi meter on DC voltage, which is denoted by a line with dotted lines under it. Then place the red lead on the positive side of the bulb and the black lead on the negative side. If you do this incorrectly it will be a negative number but the same number if the leads are reversed.If …
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I found a web site that explains how to do it: (1st link) It seems to make sense, but I have not tried it yet. That is for single phase induction motor here is for three phase motor (2nd link) I tested both links and it works perfectly.
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Answer This question makes no sense. Please clarify and check your terminology. <<>> With 15 HP of power it would be worth having a capacitor bank to correct the power factor if: (i) your load contains a large percentage of appliances with a poor power factor e.g. induction motors …
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Answer TTL is less sensitive to static-discharge failure and less expensive. It is also faster. Answer There is a condition called "latch up" that can happen with CMOS circuits if an overvoltage is applied during operation, so you have to design the input/output buffers to suit the operating …
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Proper Answer http://en.wikipedia.org/wiki/GPS#Navigation_signals That might help
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Satellite television suppliers use a number of technologies, most all of which in some way relate to the electronics industry. The video signal is sent up and down in a digital format, and it is digitally encrypted on the uplink and decrypted by the downlink receiver on your end. All of this could b…
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A circuit works through a series of components mainly resistors, capacitors, and IC's. There are different types of IC's the main groups are AND, OR, NOR, & NAND. Those are just the basics you first learn about when dealing with electronics. These IC's work from what we call the binary code whi…
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In electrical circuits series and parallel are two basic ways of wiring components. The naming comes after the method of attaching components, i.e. one after the other, or next to each other. As a demonstration, consider a very simple circuit consisting of two light bulbs and one 9V battery. If a wi…
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Voltage can be measured using the difference between the potentiel between two ends of wire or by using a volt-meter.You can easily measure volt by volt or multimeter but remember voltage always measure across the components but in parallel
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Answer Hi-pot and megger tests are common to check the insulation on transformers, motors, refrigeration compressors, etc. They help check the condition of equipment to avoid a future falure. High votage test are conducted in current transformers by shorting the seconday and earth,can apply 3 ti…
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Answer All electrical power for the car is produced by the alternator: the battery only provides the current to start the car and is a backup when the alternator quits doing it's job. If you have a power problem to the headlights, it is usually the fuses or burned out bulbs. First check the fuses. T…
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Ignition Amplifier? If you mean the Ignition Amplifier - it's a small rectangular Electronic part attached to the inner wing behind the battery - Bosch Part - about �50 to replace, they seem to go wrong at around 10/14 years - easy plug in replacement but use the heat sink conducting paste supp…
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Having gone through this same problem, No Help From Two different dealer ships, I was able to identify the problem and correct it quite easily. It appears the system, climate control, must have sufficient coolant to operate. I initially added a can of coolant and noticed no change, same as describe…
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Code 51 also refers to the throttle position sensor. You need to test the sensor - a factory repair manual will give the procedure and specs for testing.
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Yes you can - in principle, and in many cases. As long as the form factor of the new capacitor is the same as the form factor of the former capacitor, and as long as the maximum voltage of the new capacitor is higher than the max voltage of the former capacitor, you can often replace a lower-rated w…
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Answer 1 piece rear main seal and the mounting location for the fuel pump is blocked off. May have bosses cast in lifter vally for hydrolic roller cam on the newer block
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Engineering technicians use the principles and theories of science, engineering, and mathematics to solve technical problems in a variety of engineering fields. Engineering technicians generally have 2 year associates degrees. A lot of techs just install or help engineers with the hands-on start-up…
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IT wouldn't do much good. Air conditioners work by MOVING heat from one side to the other. When a window unit is running the heat is sent outside and cool air is blown inside. The water is only there because moisture condenses from air when the air cools.
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ERMS = 0.707 times Epeak = .707 times 17 volts = 12 volts RMS Erms = Epeak / Sqrt (2)(Note I'll be using different notation so, E = V) The above is derived from using. v = VMsin ωt ...... Eq1Where ω = 2πf (angular frequency) & VM is amplitude & π (pi radians) and VRMS = √[1/2π ʃ2…
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A microphone is a device that converts acoustical pressure waves (or sound, which is mechanical energy) into electrical energy or signals. All microphones have a diaphragm, membrane, or other mechanical element in them that vibrates sympathetically in response to the arriving acoustic wave fronts. T…
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A very important note There is no such thing as a 120 volt 50 Hz service! (But see >> Correction! << below.) Various countries around the world use 230 - 240 volts at 50 Hz as their standard national single-phase service - not 120 volts - so the two further answers which were given earl…
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In an integrated circuit, electronic components such as resistors, capacitors, diodes, and transistors are formed directly onto the surface of a silicon crystal. The process of manufacturing an integrated circuit will make more sense if one first understands some of the basics of how these component…
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There's not enough information in the question to provide a definite answer. It is like asking "How long does it take to get from point A to point B?" The answer depends on other factors i.e. How far is it and what is your average speed? How much voltage is needed for a 100 watt light bulb? The answ…
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Answer A zener diode, a transistor, a rectifier diode, and a few resistors. A 10.5V zener diode will conduct until the voltage across it drops to below 10.5. If the relay is small enough, a zener diode is all you need. However, more than likely the current draw of the coil would burn the zener ou…
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TTL Logic To know about the advantages of TTL logic family, one should have a basic idea about RTL, DTL etc. Diode logic (DL) uses diodes to implement logical functions like AND and OR. But the disadvantage is that it can not perform NOT operation. As AND and OR are not complete functions by them…
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In a very general way, it can be said, that electronic things work, by the successful manipulation of the flow of electrons, to achieve a desired result. Electronics is the precise control of electricity to benefit us in numerous way, such as in the use of television, cell phones, digital cameras, …
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I recently changed the battery on my 97 Camry. Afterwards the radio had no sound and the display was normal (like it always was), I checked the fuses, and even removed the radio from the dash, as I wanted it to go into the security mode, but it was fine except that I could not get any sound. A few d…
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In physical science, a electronic device may be a device that selects one in every of many analog or digital input signals and forwards the chosen input into one line. A electronic device of 2 or N number inputs has n choose lines, that ar wont to choose that input line to send to the output. Multip…
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Jack Kilby of Texas Instruments and Robert Noyce of Fairchild Semiconductor working independently of each other invented the first integrated circuit.
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Remove the door panels and lubricate everything that moves. Fixes 95% of them!
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bank 2 sensor 1 would be the sensor on the back manifold closes to the engine.
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The DVD player was invented in 1996 in Japan, by Sony.
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A rectifier converts from AC to DC power by blocking one half of the AC current. A full-wave bridge rectifier is actually 4 rectifiers combined in such a way that it reverses the blocked half of the power, allowing it to flow through.A standard power supply consists of a transformer (for voltage cha…
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German Christian Huelsmeyer was the first to discover the effect of radar in 1904, but radar as we know it was invented and the acronym established in 1935 by three British scientists, Sir Robert Watson-Watt, A F Wilkins and H E Wimperis along with Sir Henry Tizard discovered its use putting it to e…
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digital electronics is nothing but dealing 0's and 1's.. digital stand for digit. basically it has two states "1" as true and "0" false. This also known as machine language since computers simply understand these two states true or false. the machine then makes decision based on the program premise …
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No! The concept of three phase alternating electricity refers to the relational phase differential of three alternating current single phase sine waves, each displaced 120 degrees of phase angle from the other. <><><><><><><> Addetion: still the is a three…
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Answer There are two kinds of transistor: Bipolar Junction Transistors (BJTs) and Field Effect Transistors (FETs). These two transistors work in two different ways. However, both types of transistors are based on the fact that when a voltage is applied to impure semiconductor such as Silicon, it …
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Most motion detectors work on the principle of the Doppler effect. It's applied to the transmission of an ultrasonic signal and the comparison of the return or echo to what was transmitted. Any difference is caused by Doppler effect. Something was moving toward or away from the transmitter of the de…
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Becoming a Forensic ScientistYou will need at a minimum a Bachelors degree in a science such as chemistry, biology, or physics. Your coursework should ideally include microscopy, statistics, and lab work. A masters of forensics would give you better opportunities in the laboratory. You must go out i…
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Depending on what is wrong with. I would start by plugging in the AC power cord, and take it from there.
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Outlets and power (110V outlets and 120V outlets are practically the same for this discussion. I will refer to them as 120V. Same with 220V/240V outlets.) For your 120V source I assume you plan to use a standard US 120V 15A outlet. This outlet can provide a maximum of 15A at 120V. This me…
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Answer The easiest way is to connect it directly to the battery. Make sure the polarity matches up. (-ve to -ve, and +ve to +ve). Because it is 1F, it will take some time to charge. (probably a minute or two.)In that way, the capacitor will charge to whatever the voltage of the battery. But won't be…
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Vague question This is a vague question. Which transistor, and what is the make of the FM trasmitter? What do you really want to do, design an FM transmitter or repair an existing one?
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Stepping down AC voltage To step down 12 VAC to 3 VAC, you could use a step-down transformer with a winding ratio of 4:1 between primary and secondary. Stepping Down DC Voltage There are a number of ways one can step down 12 VDC to 3 VDC, but they basically fall into three categories: Unregulated…
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Answer I personally use my computer for things like that...i make my screen flash when i get an email...but all you really need is to put a mic by the speaker, capture the sound, then make a script or something that when the sound is playing, the screen changes base colors (i.e.:reverse red and w…
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Remote 7 segment display ideaIt is possible only with another means of transmission of which infra red or bluetooth is most propably the easiest and better known. The problem arises, that you will need a transmitter and a receiver, for which you will need quite a few complicated circuits. Bluetooth …
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The voltage spec'd on these units is pretty loose and the valves are desiged to cope with that range. For example, the 750 mv unit at : http://www.honeywellcentral.com/product/0-85267-87879-1.html is rated 600mv to750mv open circuit. Measured in circuit, the output could be even lower than 600mv …
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Answer A dynamo is a device that converts physical energy (water turning a wheel, steam driving a piston, etc.) into electrical energy. It is also known as a generator.
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Soldering SilverNo, it isn't hot enough. IT DEPENDS, if two silver plates are overlapped and then soldered with say electical (Tin/Lead) ie Resin cored solder then YES. But if two silver rods or bars or sheet are to be joined end to end etc then NO. The criteria is STRENGTH of the joining material a…
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Answer The fact that the engine was replaced should not be an issue. Here is my assesment based on your question; either the ac system has a smaller capacity (smaller compressor, condenser, receiver dryer), and for that reason while driving you get a higher flow of freon thru the system compared …
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your orafice tube filter is clogged. they are normally located in the a/c line,sometimes it's made into the line itself.is the system fully charged w/ freon?
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Electronic Controlled Deer Feeder The easiest approach is to use a 555 timer. See the related links to learn all about the 555. Then build one of their circuits, and adjust the two resistor values (connected to pins 6 and 7, and then 7 to 8.) and adjust the capacitor until you get the timing you…
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Is it 110/220 or just 220? There is a difference and also is it single phase or 3 phase? <><><> Generally, NO. On the other hand, a few motors were designed to be "convertible," in that their original windings were designed to work on multiple voltages by altering the wiring at t…
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A "ground" in electric or electronic circuits, is a theoretical entity that is at zero volts everywhere. The Earth itself is often used as an approximation to this, and sometimes grounds are called "Earth" connections. There is only one ideal ground. However, in electric and electronic engineering,…
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Various countries claim to have been the first to have invented it, and in the 1930s a number of countries were working on radar for military purposes. Robert Watson-Watts (1892-1973) is widely regarded as the inventor of a large-scale practical system, which he patented in April 1935 (British paten…
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1. You need to buy a R-134a recharging tool and at least one cannister of R-134a. You can find this in any auto parts store and even Wal-Mart. These come as a package and usually cost about $20 for the tool and 19 ounce can. Additional 12 ounce cans are about $6-$9. (In some locations around the cou…
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You may have difficulty doing that with both AM and FM because the antenna wavelenth is considerably out of range . Since you asked how to ELECTRONICALY cut down the signal... There are often trimmers on the tuning capacitor on AM and FM recievers that you could tweek but be careful because there …
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Answer This is something that your utility company needs to know about. One reason is you probably are not getting enough amperage to service your house. If the incomming voltage is abnormally low you need to have this checked out. About the question, it would depend if your amperage increased. …
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In electronics, printed circuit boards, or PCBs, are used to mechanically support and electrically connect electronic components using conductive pathways, or traces, etched from copper sheets laminated onto a non-conductive substrate. Alternative names are printed wiring board or PWB or etched wiri…
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First, consider an upgrade. Older monitors used 54mhz 5 watt transmitters that had limited range. Newer monitors use the 800-900 mhz band, which have better range, but can run into interference from cordless phones and other wireless devices. The simplest way to improve the range of radio frequenc…
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The formula for a simple DC voltage drop across a cable is: VDrop = Vmeasured at the input of cable - Vmeasured at the output of cable This formula may seem simplistic however keep in mind that the sensitivity, accuracy and resolution of measuring instrument instrument is what is really important.…
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Voltage 169sin(37*) = 101.7067389 (round to 101.7) *=degrees (function found on TI Calculators under "Angle") you can not do like that generally VpSIN(Wt
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It depends on the device, power consumption and physical environment. Computer equipment: Generally happier when left powered on with the exception of the hard drive and monitor (both of which have sleep modes available). The hard drive has moving parts that will eventually wear out if left running…
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Diodes In diodes there are two types of current namely diffusion and drift current. Former one is due to concentration gradient of majority carriers (hole in p side n electron in n-side). Due to this difference of concentration of carriers majority carrier start to diffuse in other side. The amou…
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make sure you have vaccum to the transducer, i believe there will be 2 hoses coming from the throttle body. make sure that the metal line that connects to the bottom of the transducer is not clogged with carbon. if you have vaccum and that line is clear, take the hose that goes to the egr vsv soleno…
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well, it is most likely due to the fact that computer monitors run at much higher resolutions than televisions. most non high def tv's run at 480i, meaning that in one flash, it writes every other line at 640x480 resolution, then once its done with writing every other line, it goes back and writes t…
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Because Alternating Current is the standard form of electricity available, devices which operate on Direct Current, such as a Liquid Crystal Display, have a converter, which converts the AC into the appropriate voltage of DC.
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its a cycle of events in which information from one step controls or affects a previous step
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Answer This means Changing the source from which the power comes from. In computers this my mean battery power or power from a 110 volt outlet.
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An analog signal has a sine wave form and a binary signal has a block "wave" form. The binary signal is either on or off ("up" or "down"), and never anything in between. analog: http://img99.imageshack.us/img99/7723sineuk6.jpg binary: http://img154.imageshack.us/img154/1894binarypb6.png
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The first radio receiver/transmitter to be nicknamed "Walkie-Talkie" was the backpacked Motorola SCR-300, created by an engineering team in 1940 at the Galvin Manufacturing Company (forerunner of Motorola). The team consisted of Dan Noble, who conceived of the design using FM technology, Henryk Magn…
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Try Advance adapters. They make an adapter for everything. I think this one may bolt right up, but I still run the 4 cyl. on mine. NO No.
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I look for a job that can help me grow with knowledge and challenge me to do my best. I also look for a job that has the ability for me to grow with the company and have potential room for advancement
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