Wire Symbols Electrical Wire Conductor of electrical current Connected Wires Connected crossing Not Connected Wires Wires are not connected Switch Symbols and Relay Symbols SPST Toggle Switch Disconnects current when open SPDT Toggle Switch Selects between two connections Pushbutton Switch (N.O) Momentary switch - normally open Pushbutton Switch (N.C) Momentary switch - normally closed DIP Switch DIP switch is used for onboard configuration SPST Relay Relay open
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PRINTED CIRCUITS COMPONENTS FOR A JIT FACTORY Mr. Carl Burger‚ supply manager at Acacia Company‚ is faced with a problem of researching several electronic components for a new graphic plotter‚ manufactured in a just-in-time environment. Acacia Company is a major producer of graphic plotters‚ renowned for top-quality and innovative products. The newest unit in the product line is the 440A‚ a relatively inexpensive eight-pen‚ A-size (8½” x 11”) plotter‚ designed for use with personal computers
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c. series clamper d. shunt clamper e. all of above Fig.1. 4. The maximum reverse bias potential that can be applied to a Zener diode before it enters the Zener region is called the: a. threshold voltage b. peak inverse voltage c. barrier voltage d. depletion voltage e. none of the above 5. In the Zener region‚ the current can increase a lot and the voltage across the diode _________. a. can increase a lot b. is almost constant c. is almost constant d. can increase a lot e. none of the
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nightlight circuit. Upon first glance we noticed all the components‚ the zener diode‚ 3 resistors‚ a capacitor‚ 4 diodes‚ a photocell‚ an LED light‚ and something we thought was a transistor. We knew the first thing to do was to identify all of the components and find out the rating for them. We had to use the microscope to determine the identifying numbers on the zener diode‚ the capacitor‚ and the‚ assumed‚ transistor. The zener diode read 1N5242B‚ the capacitor read 334J‚ and the transistor read 9014C.
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Diodes a diode is a two-terminal electronic component with asymmetric conductance‚ it has low (ideally zero) resistance to current flow in one direction‚ and high (ideally infinite) resistance in the other. A semiconductor diode‚ the most common type today‚ is a crystalline piece of semiconductor material with a p–n junction connected to two electrical terminals. A vacuum tube diode has two electrodes‚ a plate (anode) and aheated cathode. Semiconductor diodes were
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AUTOMATIC RAILWAY SIGNAL A PROJECT REPORT Submitted by VAHALUWALA SUHEL R. SHETH HARSHIL R. PATEL KASHYAP A. TANDEL JAY S. TANDEL RAJ B. In fulfillment for the award of the degree of BACHELOR OF ENGINEERING in ELECTRICAL ENGINEERING Mahatma Gandhi Institute Of Technical Education And Research Center‚ NAVSARI Gujarat Technological University‚ Ahmedabad May‚ 2012 ELECTRICAL ENGINEERING DEPARTMENT 2012 Certificate This is to certify that the dissertation entitled
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Test Item File Electronic Devices and Circuit Theory‚ 9e (Boylestad) Chapter 1: Semiconductor Diodes 1) An intrinsic semiconductor is one that is as pure as present-day technology can make it. 2) Electrons are the minority carriers in an n-type material. 3) Holes are the majority carriers in a p-type material. 4) The quantum-Volt (qV) is the unit of measurement for electron energy. 5) A free electron has a higher energy state than any that are bound to their nucleus.
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Devices Switching of bipolar devices 10 lectures – 5 classes Dr. K. Fobelets k.fobelets@imperial.ac.uk Taken from www.necel.com/process/en/ux6b_90nm_bicmos.html The course aims: (1) To review the operation of diodes and bipolar junction transistors. (2) To extend knowledge on bipolar devices to include the influence of recombination. (3) To investigate the physical mechanisms underlying the delays and speed limitations of the devices. (4) To extract equivalent
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INVISIBLE BROKEN WIRE DETECTOR 1 1. INTRODUCTION In our day to day life we are dealing with electricity as well as so many electrical equipments. In this electrical equipment the household appliances play a major role. So the fault occurring with them is also a major problem. Generally the fault seen is the breaking of wire inside the two layer or three layer cables or the short circuit between them. Portable loads such as video cameras‚ halogen flood lights‚ electrical irons‚ hand drill
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could not replace the germanium diode‚ and that the crystal radio ware efficient as a normal store bought radio. On experiment two the crystal radio had like 3 stations. The sound was very clear and loud. Also‚ the bobby pin method did not work. There were lots of hypothesis that did not support the results. Some hypothesis that did not support was that the safety pin could replace the germanium diode. The safety pin wasn’t suitable to replace the germanium diode. One of the rejected hypotheses
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