FIGURE 3 From Figure 3: A diode in series with a resistor is connected across the inductor to resolve the arcing phenomena across the switch. At t 0‚ when the switch is opened‚ the diode is forward bias hence allowing current to its branch. The current‚ I in this circuit is then given by: (VL - VF ) /R ‚ where VF is the forward voltage drop of the diode. The stored energy in the inductor is dissipated as heat in the resistor. Consequently‚ there will be no more arcing or ‘sparks’
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EXPERIMENT NO. 1 INTRODUCTION TO LAB INSTRUMENTS. 1. BREADBOARD We should be familiar to the following things about a breadboard: * What is a breadboard and what is it used for? * How does it work? * Setting Up. * Limitations. What is a breadboard and what is it used for? A breadboard (or protoboard) is usually a construction base for prototyping of electronics. The term "breadboard" is commonly used to refer to a solderless breadboard (plugboard). It was designed by
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One of the main learning experiences of this lab is to learn the importance of calibrating a sensor. In most cases‚ a sensor will not have an output that is exactly what you need. An example of this is a strain gage. A stain gage gives back a voltage‚ but with that given voltage a distance can be found. Introduction: In this experiment‚ the QNET-MECHKIT was used. This board has multiple compact sensors that can be used for experiments. For this lab we will be using the strain gage to find the
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Different Types of Resistors Electrical engineering involves the study and development of different electrical technologies‚ which are used for different purposes. One device that is very common in engineering and in electrical engineering is a resistor. A resistor is nothing but a special electrical component that helps in the induction of electrical resistance in a given electrical circuit. The resistors can be made up of different elements and different materials and it depends on the applied
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At the end of the period‚ the students are expected to: 1. Identify the color coding of resistors; 2. Compute for resistance of a color-coded resistor; 3. Compute for minimum and maximum tolerance of a resistor. II. Subject Matter: Topic: Resistor Color Coding Reference: Technology and Home Economics II Luz Villanueva et. al pp. 200-203 Materials: Visual Aids Resistors Values Integration: Orderliness and Patience III. Procedure: A. Preliminary Activity Prayer
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Define the following: RESISTOR A resistor is a component of a circuit that resists the flow of electrical current. It has two terminals across which electricity must pass‚ and it is designed to drop the voltage of the current as it flows from one terminal to the other. Resistors are primarily used to create and maintain known safe currents within electrical components. Resistors are coated with paint or enamel‚ or covered in molded plastic to protect
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Diagram: Here is the schematic for the circuit: Light Dependent Resistors Light Dependent Resistors (LDR) are also called photoresistors. They are made of high resistance semiconductor material. When light hits the device‚ the photons give electrons energy. This makes them jump into the conductive band and thereby conduct electricity. A photoresistor or light-dependent resistor (LDR) or photocell is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident
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Topics in Covered Chapter 6 : Rrfor Series-Parallel 6-1 Finding Resistances Strings Parallel 6-2:Resistance in 6-3:Resistance Banks Series in Banks Strings Series-Parallel 6-4:Resistance and in @2ffi7 The McGrc*Hilt Cwanies Inc. All iskts rcm r.i.:T;11{‚9’.’:;f;.ri;-.:l’::‚t:1+ylid;:l’’fftli. ‚:a::TF.r:.!qt:’ii-.! eil. i:‚:r’.i’tl Tcpfc-s Covered In Chapf‚er 6 a: ::r; i ri:l: li’ ii i:ll ‚i t{ i t ’ ’ ’ j . t. . ’
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MEC 325/580 Lab Report CNC Machining Lab Report Date: March 18‚ 2013 Group Leader: Jian Wu Team Members: Group Number: G4 Regment No.: D Insturctor: CONTENTS 1.Objective and introduction. 2.Principles and practice. 3.Design and result. 4.Conclusion and recommendations. Appendices 1. Objective and introduction * Objectives Operate the CNC milling machine using G-codes‚ M-codes in a CNC program. * Equipment: Minitech CNC machine (Series 2) * Machine
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Microbiology-2460 Lab-003 March 31‚2008 Lab Report-Escherichia coli Abstract The purpose for this lab report was to identify and inform of an unknown bacteria that has been causing a patient to have lower abdominal and pelvic pain. To obtain the identification of this unknown bacterium‚ several biochemical tests needed to be performed in order to prescribe the correct medication to treat and cure the symptoms. Introduction In a lab today‚ I am to identify an unknown bacterium that is
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