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FAQ

i want to make a bulb on and off at intervals of say half an hour. readymade timers available in shops(india) costs much and does not support shorter intervals like half an hour. any cheaper electronic circuit which can do this control? from where can i get the circuit or its diagram?

Depending on your skills, a CMOS 555 timer chip could probably drive a solid state switch (triac) for this interval although a more reliable timing, especially if you want exactly a 50% duty cycle, by feeding the timer output into a counter, so that the 555 cycles say 32 times (once a minute about) for each change of state of the selected output. Smaller cycle times are more stable.

I have all my electrical equipment hooked up to 1 HDTV, that is sky, ps3 and computer. Today i noticed that when i change the input mode while booting my computer there is an option next to RGB. This option is either PC or DTV depending on which one i select, what is this? and also which is better?

The two choices are PC Personal Computer or DTV Digital TV. Depending on what you're doing will determine the mode of operation. When in TV mode you use the TV controls to set the width and aspect ration of the display. When you're using the PC the graphics card will normally set the width and aspect ration. Ever notice that when you change resolution on a normal PC monitor that 640X480 uses just as much screen as when it's set to 1072X768. The graphics card adjusts the size. DTV mode will have the internal controls in your TV controlling the size and PC will have the graphics card in the PC controlling it. As I'm writing this another possibility came to mind. You may have an ATSC tuner (digital tuner) built into your HDTV. The TV may simply be asking you which source you want it to look at. In other words do you want to continue watching TV using the internal tuner or switch to looking at the PC information that is now available. Your best bet is to pick up the owners manual and read the section that tells you about hooking up your computer to the monitor. I'm sure that will explain what your asking for.

I have an electrical equipment(Its quite old. aybe about 25 years old)These are the ratings:Input : AC 120 V 60 HzOutput : DC9V - 850mAI live in SIngapore which has a power input of 240VMy step down transformer/converter specsMaximum power it can convert is 230 watts

Your existing transformer/converter will work just fine. Even if it's only 25% efficient your adapter will be pulling just 36 watts. Your transformer is good for over six times that. So you're ok. You want the transformer to have a capacity of at least 20% over the actual load, but more capacity is perfectly ok. Of course, you could also replace your power adapter with one that takes 240V input. That would be a lot more convenient. In the US such adapters normally cost less than 10 USD.

20 ft. off the ground,miles of steel rail supporting it, thousand's of gallons of diesel, electrical equipment all around.

Safe. You are surrounded by metal which forms a pretty good Faraday cage. The loco is well grounded via the rails. Apart from the bang of thunder you might not even notice the lightning. The Diesel fuel is in a steel container under the loco and even better shielded than you are.

After being around him I noticed and so did he that lights turn off as he passes them, and every time he would come in my bedroom my light bulbs would blow out. Sometimes when we kiss he shocks my lips a little and doesn't notice it.Okay don't think I'm weird but I was researching such unusual phenomena and I noticed people mentioning alien abductions and that people who were abducted and DON'T remember it (because nobody does) will have a weird relationship with electrical devices, including disrupting the connection by being around them.Anyone want to talk about such things? Interesting.

Some how for God knows only the reason I moved into a house in Concord Ohio with a Witch Family. In the dead of day the old lady came walking up to me wearing sun glasses and had a presence I'll never forget. So, go tell the government that! Had to get away. Gee, girls are cute?

I want to get into a field that involves fixing electrical equipment. I have always loved taking apart things like my Xbox/Playstation/cell phone so I could fixing them when they broke and I would like to further this into a career. What type of field should I study in order to pursue this goal? I am a student at the University of Arizona, so if you know of any programs there that would help a lot.

None, depending on how or where you work. If you work for yourself you don't need any degree at all. You need to be an electronics service engineer. You have to be able to do the job. That's more important than having a piece of paper that says you got good grades and showed up or class. (I would argue this is true for most fields) You can get a degree in electronics engineering at many schools. It would be very helpful to find work at a company specializing in service of these things. Nobody repairs cell phones, it just isn't worth doing.

If a landlord is renting out an old home and the tenant suffers regular damage to his or her electrical equipment, would the landlord be responsible for having the building wiring updated so that such damage does not continue to occur on a regular basis? What if the cost of such repairs far exceeds the rent that the tenant would be paying? Would the tenant be legally able to break a lease without paying fines in this type of situation?

If there are NO grounds, as you say, in the building, then anything metal that you touch would be electrified. You would be electricuted. So I find it hard to believe there are no grounds. Depending on the type of equipment you are talking about, make sure that you have the correct ampage. You cant run a 220 electrical appliance on a 110 line. All you are going to do is blow fuses or your equipment. You could also start a fire. As to the answer, Landlord is completely correct. As long as the home meets city code and passes inspections (required in MI for all landlords), then no, the landlord does not have to update the building wiring. I have 13 homes in 4 different cities in MI that I rent out, they are inspected every year or 18 months by law, and if the electrical is not up to code, then noone can live there due to the danger of fire, until it is brought up to code. And the inspectors are hard on landlords when it comes to repairs. Finish out your lease and then move if you are so unhappy. But NO, you cant break your lease because of this.

hi, i am in my final year electrical engineering can any one provide me the latest booming seminar topics.

see this website engineering.electrical-equipment.