An uninterruptible power supply, also uninterruptible power source, UPS or battery / flywheel backup, is an electrical apparatus that provides emergency power to a load when the input power source, typically the utility mains, fails.A UPS differs from an auxiliary or emergency power system or standby generator in that it will provide instantaneous or near-instantaneous protection from input power interruptions by means of one or more attached batteries...

How to Reduce Voltage with Resistors resistor voltage dividerSay if you have a main power supply that is supplying a voltage that is much higher than you may need for a particular part of a circuit, such as for a chip in the circuit. Maybe the circuit is run off of a 9-volt battery but the chip in the circuit only needs 3V.How can this voltage be reduced?It turns out, there are many ways of doing so, and one of the easiest and cheapest ways of doing so is...

Theory Potato juice contains many water soluble chemicals that may cause a chemical reaction with one or both of our electrodes. So we may get some electricity from that. Material:For this experiment we use:    A fresh potato    Copper Electrode    Zinc Electrode    A Digital or Analog Multimeter to measure Voltage or Current of produced electricity.    Alligator clips/ Leads...

Materials needed  Copper wire or any conductor of  Cardboard Screw driver  Bolt and nut Cable for extention  Transformer  Procedure  This antenna spins to orient a pattern of wires, known as an array in engineerspeak, toward broadcasting towers. Rabbit ears and some other older antennas can't receive high-­frequency digital TV transmissions (but if you have an old antenna, try it). To assemble this DIY design, get...

How to wire a intermediate switch? How do you wire a intermediate switch iv got 3 door ways 2 enter a room, all with I switch at each door way all to operate the same light.  BEST ANSWER First and foremost make sure that you have pre-notified your local authority building control department and paid their fee so that you can undertake DIY electrical work in your home - failure to notify and get consent for part P electrical work can put...

PROPERT IES OF MAGNET     1. Magnets attract objects of iron, cobalt and nickel.    2. The force of attraction of a magnet is greater at its poles than in the middle.    3. Like poles of two magnets repel each other.    4. Opposite poles of two magnets attracts each other.    5. If a bar magnet is suspended by a thread and if it is free to rotate, its...

The way energy from fuel gets transformed into electricity forms the working of a power plant. In a thermal power plant a steamturbine is rotated with help of high pressure and high temperature steam and this rotation is transferred to a generator to produce electricity. In the nuclear plant field, steam generatorrefers to a specific type of large heat exchanger used in a pressurized...