what is ZigBee

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ZigBee   1 Introduction Wireless technologies that exist now days are able to transfer data without cable and are low cost but still there is need of a technology that can transfer data both cheaply and efficiently. There must be a technology that don’t consume too much power and don’t need expensive maintenance. For all of these...

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What is 7805

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7805 Operation: The 7805 takes in a voltage between 7 and 30 volts and regulates it down to exactly 5 volts. The first capacitor takes out any ripple coming from the transformer so that the 7805 is receiving a smooth input voltage, and the second capacitor acts as a load balances to ensure consistent output from the 7805. Transmitter circuitry...

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Tunnel Diode

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Tunnel Diode  A tunnel diode or Esaki diode is a type of semiconductor diode which is capable of very fast operation, well into the microwave frequency region, by using the quantum mechanical effect called tunneling. It was invented in August 1957 by Leo Esaki when he was with Tokyo Tsushin Kogyo, now known as Sony. In 1973 he received...

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PLC BASED   AUTOMATIC BOTTLE FILLING CONTROL SYSTEM  PLC Based Bottle Filling System  is a small home based filling machine. Prior to this Project, there were many problems faced in the home based filling plant. The main problem was that the filling plant filled only same size of bottles. for example for filling 250 ml bottle, a conveyor system is required while for filling 500 ml bottles, another separate conveyor system is required which greatly increases the cost of filling...

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FET's, Field Effect Transistors

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FET’S: FET’S is Field-effect transistors. It’s a voltage control electronics device. It has 3 terminals. 1: Gate        2: Drain        3: Source It’s has 2 configurations’  1: N-channel 2: P-channel N-channel...

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test web fkfffkdjfkldjflk fjkdsfjkdlfj fjdkfdjf hdjfdjf jkfgjkfjg fhgkjfjclick here for next ...

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Oscilloscope Definition of Oscilloscope : Oscilloscope is an electrical Instrument through which we can observe and measure the different wave forms and graphically behavior of Electrical Circuits.There are two types of Oscilloscope one is Analog and second is Digital.In Analog Oscilloscope we need to perform mathematical calculations to measure the actual values of Wave form.In Digital Oscilloscope we no need to perform any Mathematical calculation to measure the actual values of wave form.Today...

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PART3 Bootstrap Capacitor Design: From the application notes of the HIP4081, we studied that the bootstrap capacitor must be greater than the ten times of the gate to source capacitance of the MOSFET used in the bridge. Qgs = 12.3 nC  Vgs(min)= 2volt  Cgs = Qgs/Vgs = 12.3/2 = 6.15 nF  So bootstrap capacitor > 61.5...

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part2 block diagram of UPS  AC TO DC CONVERSION Type of chargers: i). Ferro-Resonant Charger They are very bulky because of low frequency magnetic control system in it. They are slowly recharged. Their magnetic field may disturb other components of the equipment. ii). Linear Charger They also use low frequency transformer...

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HIGH FREQUENCY SINE WAVE UPS In conventional inverters which are now a day’s commonly used in Pakistan, consumer faces many problems relating to their performance. The foremost problem is their efficiency which is in between 85% to 90%. The efficiency mainly depends upon the switching frequency of the transformer which is used in DC/AC inverter. The...

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