Ppt on point contact diode symbol

DESIGN OF ELECTRONIC SYSTEMS Course Code : 11-EC201 DEPARTMENT OF ELECTRONICS & COMPUTER ENGINEERING.

between the p- and n-type material The point at which the barrier becomes zero (the flat-/diodes Special diodes, such as varactors (diodes with variable capacity), tunnel diodes or Schottky diodes Types of diodes Operation In The Reverse Breakdown Region- ZENER Diodes Circuit symbol for a zener diodeModel for the zener diode. The diode/contact is ohmic. Schottky diode turns on at lower voltage than pn junction diode, has significantly reduced internal charge storage under forward bias. Schottky Barrier Diode/


1 2010 Element 2 Technician Class Question Pool by W4ZH Jeff Smith Valid July 1, 2010 Through June 30, 2014.

by the control operator 50 T1E05 What is an amateur station control point? A.The location of the station’s transmitting antenna B.The location/symbol 232 T6C06 What is component 6 in figure T2? A.Resistor B.Capacitor C.Regulator IC D.Transistor 233 T6C07 What is component 8 in figure T2? A.Resistor B.Inductor C.Regulator IC D.Light emitting diode/All of these choices are correct 322 T8C03 What popular operating activity involves contacting as many stations as possible during a specified period of time? A./


© 1997-2004 R.LevinePage 1 Electronics Review B EETS8304/TC715-N SMU/NTU Lecture Scheduled Jan. 27, 2004 Electronic Devices (print slides only, no notes.

are classified in reference books according to their “electro-negativity” or “contact potential” or “ionization potential” measured in volts This affects other situations when/ Ideal voltmeter measures diode’s voltage, but no current flows through the voltmeter. Real voltmeters allow very small current flow. Anode (top) of diode symbol is the conventional positive/) on the junction –The reverse “leakage” current (from origin to point C) is almost constant over most of the negative voltage range. Reverse/


1 2010 Element 2 Technician Class Question Pool by W4ZH Jeff Smith Valid July 1, 2010 Through June 30, 2014.

by the control operator 50 T1E05 What is an amateur station control point? A.The location of the station’s transmitting antenna B.The location/symbol 232 T6C06 What is component 6 in figure T2? A.Resistor B.Capacitor C.Regulator IC D.Transistor 233 T6C07 What is component 8 in figure T2? A.Resistor B.Inductor C.Regulator IC D.Light emitting diode/All of these choices are correct 322 T8C03 What popular operating activity involves contacting as many stations as possible during a specified period of time? A./


The 20th centurys greatest engineering achievements

the medium was ready for takeoff. Broadcasting, rather than point-to-point communication, was clearly the future, and the term "wireless"/ Thomas Kurtz develop the BASIC (Beginners All-Purpose Symbolic Instruction Code) programming language specifically for the schools /atop it. As the industry evolves, the diameter of contact lenses gradually shrinks. Witold Kwaśnicki (INE, UWr/conducting organic polymers. These are developed into light-emitting diodes (LEDs), solar cells, and displays on mobile telephones./


DESIGN OF ELECTRONIC SYSTEMS Course Code : 11-EC201 DEPARTMENT OF ELECTRONICS & COMPUTER ENGINEERING.

between the p- and n-type material The point at which the barrier becomes zero (the flat-/diodes Special diodes, such as varactors (diodes with variable capacity), tunnel diodes or Schottky diodes Types of diodes Operation In The Reverse Breakdown Region- ZENER Diodes Circuit symbol for a zener diodeModel for the zener diode. The diode/contact is ohmic. Schottky diode turns on at lower voltage than pn junction diode, has significantly reduced internal charge storage under forward bias. Schottky Barrier Diode/


1 Bipolar Junction Transistor (BJT) ( 08 H ): PNP and NPN transistors–current components in BJT – BJT static characteristics (Input and Output) 1H– Early.

(Exactly as for dynamic resistance, small variations about a Q point, in our discussion of diodes.) The forward bias between the base and emitter injects electrons from/ ); same as electron part of emitter current, – I EN 4 = electron supplied by base contact for recombination with holes lost, – I BR (= 1) 3 = thermally generated e & h/ - College of Sciences - Al-Imam Muhammad Ibn Saud Islamic University - Riyadh Sept. 2012. 59 JFET SYMBOL –FETs are 3 terminal devices  Drain ( D )  Source ( S )  Gate ( G/


Electronics The fifth and Sixth Lectures Seventh week 21 - 24/ 12/ 1436 هـ أ / سمر السلمي.

 pn Junction’s Symbol Symbol of diode as in the first figure, triangle base is p-type and triangle head is n-type.  pn Junctions’ types Light Emitting Diode LED Photodiode Zener Diode. Avalanche Diode Tunnel Diode Scottky Diode Varactor Diode Laser Diode PIN Diode…etc =  pn Junction/each other in the diode??  Will Fermi level be in the same place to two types or will be separated at adhesion point?  will conduction and valence bands in the diode at the same place?  The Contact Potential and Energy /


Introduction To Electricity  To understand electricity properly we must start by finding out what it really is. This means we must use our imagination.

of the rate of flow of charge past a fixed point. Next > Nature of Resistance When a current flows through/can be written as: The unit of resistance is the ohm, symbol , named after the scientist who first discovered the relationship between / inducing a electrical current in it. Rectifier assembly: A diode rectifier bridge.This changes AC current to DC current. Brush/ Relay Components Windings Soft iron core 1 3 Moving contact (Armature) Fixed contact 2 4 Return spring Relay switches high currents, but/


Contacts Gordon Lipscy – Wayne Lu – Charlie Boncelet, PhD -

of the movement of the holes which is opposite the direction of electron flow. The symbol for a diode has an arrow head pointed in the direction of conventional current. Electron current flows in the opposite direction. Lab 1/heart), shock/burns, downed wires, insulation breakdown from moisture, contamination or abrasion (frayed cords), outlets, portable appliances, contact resistance (burns/fires in the wall). Household AC SAFETY FEATURES National Electrical Code is the Law. Breakers/Fuses Polarized /


Prof. Iqbal A. Khan, EED, UQU Course Code: 802311 Course Name: Electronic Devices By Prof. Iqbal Ahmad Khan Department of Electrical Engineering Faculty.

DIODE-LED: LED are semiconductor p-n junctions that under forward bias conditions can emit radiation by electroluminescence in the UV, visible or infrared regions of the electromagnetic spectrum. The qaunta of light energy released is approximately proportional to the band gap of the semiconductor. P-n junction Electrical Contacts Schematic Symbols/vertical field component which in turn makes channel less deep. At some point, electrons are traveling as fast as possible through the channel (“velocity /


Y11 Revision. The course The iGCSE course is structured as topics … Y11 Electricity Magnets and Currents Electrons and electronics Atoms and Radioactivity.

one ampere (A) flows when a charge of one coulomb (C) passes a point in an electric circuit in one second In metallic conductors (e.g. copper wire)/Concepts Diode Current only flows through a diode in one direction. (Shown by the arrow on its symbol) The diode has a very high resistance in the reverse direction. A light emitting diode (/ A simple circuit breaker Current normally flows between terminals A and B through the contact and the electromagnet. When the current in a circuit increases, the strength of/


Electrical Circuits / Electronics

Supplies Components - Resistors Fixed Resistor Symbol Resistors are basic components in electrical /Parallel Circuits There are two important points to remember about resistors in parallel./contacts in any other switch do. Relays The relay is a very useful device because it is the vital link between microelectronics and high-energy systems that require substantial amounts of current. The relay is perhaps the most commonly used switch for driving devices that demand large currents. Relays – Protection Diode/


Technician License Class

causing electrons to flow. I = Current Intensity Number of electrons flowing past a point in a given period of time. R = Resistance Opposition to flow of electrons/. Relays. An electrically-controlled switch. A set of switch contacts connected to an electromagnet. Components Circuit Gatekeepers. Indicators and displays/symbol T6C06 -- What is component 6 in figure T2? Resistor Capacitor Regulator IC Transistor T6C07 -- What is component 8 in figure T2? Resistor Inductor Regulator IC Light emitting diode/


Technician License Class Chapter 3 Electricity, Components and Circuits.

causing electrons to flow.  I = Current Intensity  Number of electrons flowing past a point in a given period of time.  R = Resistance  Opposition to flow of /Relays. An electrically-controlled switch. A set of switch contacts connected to an electromagnet. Components  Circuit Gatekeepers. Indicators /symbol T6C06 -- What is component 6 in figure T2? A.Resistor B.Capacitor C.Regulator IC D.Transistor T6C07 -- What is component 8 in figure T2? A.Resistor B.Inductor C.Regulator IC D.Light emitting diode/


Welcome to AfterSalesTraining. R 356 Foundation Electrics Type Instructor Name Here.

Potential Difference Between the Positive & Negative Charges Within a Battery Symbol used to Denote Voltage V = Volts Resistance Restriction of the/or Diode Armature Contacts Relays Testing Relays Is Winding OK ? Do the Heavy Duty Contacts Operate ? Energise Winding (9 Volt battery) Resistance Check of Heavy Duty Contacts Should /Manual RAVE ERLElectrical Reference Library Contains : Introduction Fuse Details Earth Points & Headers Description & Operation Connector Applicability Connector Details Rover /


The Learning Cycle “The 5 E’s” of an inquiry-based lesson Initiate ApplyClarify Question Evaluate.

securely into the socket. (But not too much. Students often keep turning the bulb more than is necessary to make contact.) Test the circuit again to see if the bulb will light. Problem-Solving Techniques To fix a circuit tester that doesn/Look at your diode. Notice that there is a colored band on ONE end of the diode. Diode Symbol In your Science Notebook draw the symbol for a diode. Draw a circuit diagram that includes your circuit tester, the switch, and the diode. The diode is always pointed in the /


Cross-sectional view of single wafer capacitive microphone

Electroluminescence First production 1968 Electronic symbol Pin configuration anode and cathode Parts of an LED LED A light-emitting diode (LED) is a semiconductor /contact.) Due to the use of charge injection in powering most diode lasers, this class of lasers is sometimes termed "injection lasers," or "injection laser diode" (ILD). As diode/ optical cavity. The forward current level is also increased, to the point where the current density reaches a critical level where .carrier population inversion/


1 Lecture 2  Circuit Elements (i).  Resistors (Linear)  Ohm’s Law  Open and Short circuit  Resistors (Nonlinear)  Independent sources  Thevenin.

the linear properties, but it changes with time t Let us consider for example a linear time varying resistor with sliding contact of the potentiometer that is moved back or forth by servomotor so that the characteristic at time t is given by 16/ diode, which characteristic is symmetric with respect to the origin; whenever the point (v,i) is on the characteristic, so is the point (-v,-i). Clearly, all linear resistors are bilateral but most of nonlinear are not. Fig.2.11 Symbol for an ideal diode and/


Operator Generic Fundamentals Plant Drawings

of pump symbols, depending on motive media used: Hydraulic Pneumatic ELO 2.6 Pumps Basic symbol for pump is circle containing one or more arrow heads indicating the direction(s) of flow with points of arrows in contact with circle/Diagrams - Component Blocks    ELO 3.8 Electronic Drawings and Schematics Symbols Knowledge Check What electronic component is represented by the following symbol? Diode Light emitting diode Silicon controlled rectifier Zener diode Correct answer is B. Correct answer is: B ELO 3.8 /


Prof. Iqbal A. Khan, EED, UQU Course Code: 802311 Course Name: Electronic Devices By Prof. Iqbal Ahmad Khan Department of Electrical Engineering Faculty.

tapped connection, (C). Now each diode conducts in turn when its Anode terminal is positive with respect to the center point C as shown in Figure. The output/DIODE-LED: LED are semiconductor p-n junctions that under forward bias conditions can emit radiation by electroluminescence in the UV, visible or infrared regions of the electromagnetic spectrum. The qaunta of light energy released is approximately proportional to the band gap of the semiconductor. P-n junction Electrical Contacts Schematic Symbols/


Chapter10 Fundamentals of Integrated Circuit Fabrication Dr.Debashis De Associate Professor West Bengal University of Technology.

10-14 Testing for Reliability 10-15 Packaging Protection 10-16 IC Symbols 10-17 Fabrication Steps for Different Circuits 10-18 Real-Life Applications / IC SCALE OF INTEGRATION:  Historically, the first semiconductor IC chips held one diode/transistor. Advancement of technology enabled us to add more and more transistors.  /Steps of Fabrication of the Transistor Circuit: Step VII: Metal interconnections for different contact points are used, as shown in Fig. 10-21(h). Metallization is performed /


Gary Plimer 2013 Electrical Circuits / Electronics Electricity is one of the most important forms of energy available to man. It affects everyone’s lives.

2013 Components - Resistors Fixed Resistor Symbol Resistors are basic components in electrical/ There are two important points to remember about resistors in/contacts in any other switch do. Gary Plimer 2013 Relays The relay is a very useful device because it is the vital link between microelectronics and high-energy systems that require substantial amounts of current. The relay is perhaps the most commonly used switch for driving devices that demand large currents. Gary Plimer 2013 Relays – Protection Diode/


Dr. N. RAMACHANDRAN, NITC1 2 METAL JOINING Even the simplest object is an assembly of components Complex ones - greater number of parts- subassemblies.

the Government of Poland, the AWS Historic Welded Structure Award. Welding symbols are established by the American Welding Society General Electric experiments with "Controlled/ of the single crystal structure. 2002  From Linde Gas in Germany, a Diode laser using process gases and "active-gas components" is investigated to enhance the / two intimate contact surfaces High pressure waves- thousands of MPa created- To weld dissimilar metals, thick to thin, high difference in Melting Point metals. Not/


THS Automotive Technology Electrical Circuits Lesson 1: Components of an Electrical Circuit Components of an Electrical Circuit.

contact point and disrupt circuit operation. The circuit breaker is a thermally operated device. A bimetal strip keeps contact points on the circuit breaker closed. When the bimetal strip cools, it contracts and closes the contacts/5 volts to 2 volts, which is much higher than a diode. As in a diode, the LED allows current flow only in one direction. The/NOTE: Logic circuits are represented by logic symbols to aid in the understanding of the circuit. These logic symbols are used to show the internal circuits /


ElectronicsCRO 1 Cathode Ray Oscilloscope (CRO) Structure of CRO Vertical deflection of the spot Next Slide Horizontal deflection of the spot Common patterns.

not lighted) Electronics Next Slide Electronic Device 1 Light emitting diode (LED) and its symbol are shown below: symbol Electronics Click Back to Electronic Device 1 A LED emits light/Electronic Device 1 Different kinds of potential dividers are shown below: Sliding contact Potential divider circuit which contains a variable resistor. Potential divider circuit which/the thermistor is very large compared with the resistance of the variable resistor. Point A is said to be at high potential (+) since the p.d./


1 Transferred Electron Devices TEDs are made of compound semiconductors such as GaAs. They exhibit periodic fluctuations of current due to negative resistance.

(intrinsic ) region, through which generated holes must drift in moving to N+ contact. It consists of two regions: In all the structures (Si, GaAs and /diode symbol for circuit diagrams The Gunn diode symbol used in circuit diagrams varies. Often a standard diode is seen in the diagram, however this form of Gunn diode symbol does not indicate the fact that the Gunn diode is not a PN junction. Instead another symbol showing two filled in triangles with points touching is used as shown below. Gunn diode symbol/


ECSE-6230 Semiconductor Devices and Models I Lecture 3

Medici: md3200 (or medici) file-maximum 3,200 grid points md10000 file - 10,000 maximum grid points md20000 file - 20,000 maximum grid points For example: md3200 diode.inp Suggested Procedure for Simulation Define structure and save to/Device Structure (cont.) Set up contact and interface characteristics CONTACT Resistance lumped Metal Metal work-function Barrier lowering Surface recombination velocity 2. Simulate Device Specify physical models Specify method of solution SYMBOLIC METHOD Set up file for /


IPC-T-50 TERMS AND DEFINITIONS

33.1437 A shaped metallized‑ceramic form used as an intermediate carrier for diode or transistor die that has been especially adapted for leadless surface mounting. Leadless/a product. Registration Mark 22.1315 A stylized pattern (symbol) that is used as a reference point for registration. Regression Analysis 91.1241 The use of / 92.1538 The electrical resistance of an insulating material between a pair of contacts, conductors or grounding devices in various combinations, that is determined under specified /


Heng Chan; Mohawk College

Contact It’s based on a simple metal- semiconductor interface. There is no p-n junction but a depletion region exists. Current is by majority carriers; therefore, very low in capacitance. Semi- conductor Layer SiO2 Dielectric Substrate Metal Electrode Applications: detectors, mixers, and switches. Heng Chan; Mohawk College Varactor Diode Varactors operate under reverse-bias conditions. Cj Co Circuit Symbol/ a dipole or horn antenna use for point-to-point and satellite communications Heng Chan; Mohawk College/


Technician Class License Test Questions Effective July 1, 2010 PowerPoint by Kimberly Gan KA9NQK October, 2008 (updated March, 2011)

eligibility, designation of control operator, privileges and duties, control point, local, automatic and remote control, location of control operator /C. C. D. D. T6B – Semiconductors; basic principles of diodes and transistors T6B01 (D) What class of electronic components is capable/C. C. D. D. T6C12 (A) What do the symbols on an electrical circuit schematic diagram represent? A. Electrical components B./ T8B04 (B) Which amateur stations may make contact with an amateur station on the International Space /


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T1A - Amateur Radio Service: purpose and permissible use of the Amateur Radio Service; operator/primary station license grant; where FCC rules are codified;

eligibility; designation of control operator; privileges and duties; control point; local, automatic and remote control; location of control operator /an amateur radio station? A.For logging contacts and contact information B.For sending and/or receiving/Semiconductors: basic principles and applications of solid state devices; diodes and transistors T6B01 (D) What class of electronic /figure T3? A. Antenna T6C12 (A) What do the symbols on an electrical circuit schematic diagram represent? A. Electrical /


Electronic Devices & Circuits Khurram Bughio Lecturer Electrical Engineering, MUCET.

, MUCET Diode Model Diode A diode is a single pn junction device with conductive contacts and wire leads connected to each region, as shown in Figure. One part of the diode is an n-type semiconductor and the other part is a p-type semiconductor. The n region is called the cathode and the p region is called the anode. The "arrow" in the symbol points in/


17/09/2015 Unit 2 – Physics for your Future (EdExcel)

Controlling and Using Electric Current 17/09/2015 Circuit Symbols VA Battery Cell Fuse Resistor LDR Voltmeter Ammeter Variable resistor Diode Switch Bulb Thermistor 17/09/2015 Basic ideas…/ differences… “Distance” is how far you have gone, “displacement” is how far you are from a point and can be positive or negative: Start 1 metre -1 metre Distance = Displacement = Distance = Displacement /If the ball has a mass of 0.5kg and his foot is in contact with the ball for 0.1s calculate: 1)The change in momentum of/


04/10/2015 AQA Additional Science W Richards Physics 2 A slideshow that covers the entire AQA 2006 Syllabus Physics 2 Module.

the air resistance will be big enough to _______ the skydiver’s weight. At this point the forces are balanced so his speed becomes ________ - this is called TERMINAL VELOCITY Words/ If the ball has a mass of 0.5kg and his foot is in contact with the ball for 0.1s calculate: 1)The change in momentum of the/1) Fuel pipes 2) Hospitals 04/10/2015 Circuit Symbols VA Battery Cell Fuse Resistor LDR Voltmeter Ammeter Variable resistor Diode Switch Bulb Thermistor 04/10/2015 Electric Current Electric current/


TECHNICIAN QUESTION POOL Shasta-Tehama Amateur Radio Emergency Service.

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PHOTODIODE Description A photodiode is an electronic component that can detect light by converting light into either current or voltage depending on the.

series resistance of the photodiode (RS) is comprised of the resistance of the undepleted region of the diode and the contact resistance. RS is usually of the order of 10 ohms but can be up to a few hundred ohms in small area/current flowing in the other direction from the cathode to the anode and no light is created in this direction. The arrow in the symbol points in the opposite direction as electron flow because it was based on conventional current flow before the discovery of electrons. In other words /


07/06/2016 AQA Additional Science W Richards Physics 2 A slideshow that covers the entire AQA 2006 Syllabus Physics 2 Module.

the air resistance will be big enough to _______ the skydiver’s weight. At this point the forces are balanced so his speed becomes ________ - this is called TERMINAL VELOCITY Words/ If the ball has a mass of 0.5kg and his foot is in contact with the ball for 0.1s calculate: 1)The change in momentum of the/1) Fuel pipes 2) Hospitals 07/06/2016 Circuit Symbols VA Battery Cell Fuse Resistor LDR Voltmeter Ammeter Variable resistor Diode Switch Bulb Thermistor 07/06/2016 Electric Current Electric current/


14/06/2016 Unit 2 – Physics for your Future (EdExcel)

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14/06/2016 AQA Additional Science Physics 2 14/06/2016 Distance, Speed and Time Speed = distance (in metres) time (in seconds) D TS 1)Seb walks 200 metres.

the air resistance will be big enough to _______ the skydiver’s weight. At this point the forces are balanced so his speed becomes ________ - this is called TERMINAL VELOCITY Words/ If the ball has a mass of 0.5kg and his foot is in contact with the ball for 0.1s calculate: 1)The change in momentum of the/1) Fuel pipes 2) Hospitals 14/06/2016 Circuit Symbols VA Battery Cell Fuse Resistor LDR Voltmeter Ammeter Variable resistor Diode Switch Bulb Thermistor 14/06/2016 Electric Current Electric current/


14/06/2016 AQA Additional Science Physics 2 A slideshow that covers the entire AQA 2012 Syllabus Physics 2 Module.

the air resistance will be big enough to _______ the skydiver’s weight. At this point the forces are balanced so his speed becomes ________ - this is called TERMINAL VELOCITY Words/ If the ball has a mass of 0.5kg and his foot is in contact with the ball for 0.1s calculate: 1)The change in momentum of the/1) Fuel pipes 2) Hospitals 14/06/2016 Circuit Symbols VA Battery Cell Fuse Resistor LDR Voltmeter Ammeter Variable resistor Diode Switch Bulb Thermistor 14/06/2016 Electric Current Electric current/


HAM CRAM AMATEUR RADIO TECHNICIAN LICENSE REVIEW COURSE

current decreases. The E, I product (watts) is not changed. Component Symbols Active Component Functions Diodes let current flow in one direction. Used to rectify, convert AC to DC/ 144.0 to 144.1 MHz - CW only. 1.25 meters, 219 to 220 MHz - Point/Point CW & Data only. Technician HF Privileges 3675 to 3725 kHz - 80 meter band - CW only/meters) & UHF (70 cm.) frequencies. Any Technician licensed HAM can contact it. International space station contact good for about 4 to 6 min. The building and launch of most/


1 EE40 Summer 2010 Hug EE40 Lecture 18 Josh Hug 8/06/2010.

in the quasi-neutral regions, they recombine with majority carriers (supplied by the metal contacts) “injection” of minority carriers Under reverse bias, the potential barrier is increased, so/V) 66 EE40 Summer 2010 Hug Making a pn Junction Diode Schematic diagram p-type n-type IDID + V D – Circuit symbol Physical structure: (an example) p-type Si n-type / for better answers –If somehow we aren’t done at this point, I’ll do a quick diode problem 75 EE40 Summer 2010 Hug Extra Slides 76 EE40 Summer 2010/


03 - Actuators and Sensors

momentary cam action on the contact plungers. Key Operated Selector Switch Schematic Symbols   Key operated Selector switch 2 position 2 contacts Illuminated Pushbuttons Module 1: Push/ Module 3: Inductive Proximity Detectors The difference between the On and Off points is called hysteresis or differential travel. The amount of target travel required/ source Light detector Lenses Output switching device Light Source A light emitting diode (LED) is a solid-state semiconductor that emits light when current is/


5: Electric Current 5.1 Electric potential difference, current and resistance.

current Demo: The shuttling ball This demonstration shows that… One coulomb passes a point in a circuit when a current of one amp flows for one second. /length of resistance wire) split into two parts by a sliding contact as shown in diagram ‘a’ opposite. In order to save /a potential divider. 11.Draw figure 2c on page 70 (circuit symbol) and explain how a potential divider can be used to control/case the pd across the resistor and the current through the diode. 6.Try the summary questions on page 69 5.5/


Electronics Basic guide for beginners. Basic Concepts.

Current Electric current is the amount of electrons, or charge, moving past a point every second. It is basically the speed of electron flow. The faster the /light emitting diode and the wavy lines represent the resistor -- both of which will be discussed in the components section. Note the "R1" next to the resistor symbol and "/. It simply connects and disconnect a circuit. This section gives an overview of the contact configurations. There are 3 commonly used configurations: SPST, SPDT, and DPDT. SPST =/


ELECTRICAL ENGINEERING Ch 14 p 457. An Evolution of electronics The beginning...

wires). Eg. switches & pushbuttons Please Write Pole = # of contact points it can open/close at once  Single-pole = opens/closes one contact at a time (unipolar)  Double-pole = opens/closes two contacts at a time (bipolar) Types of Switches Please Write Throw = /changes AC to DC) 4. LED = light emitting diode Visually tells you what way the current is flowing. Emits a lot of light with low voltage. Please Write Component Symbol Function DIODE LED Capacitor Protect circuits, guide current flow & rectify /


© 2007 Ideal Industries www.idealindustries.com 1 of 69 Basics of Digital Meters- Utility Applications Basics of Digital Meters Utility Applications.

testing –Good Accuracy and Resolution Added Features –NCV (Non-contact Voltage –Current © 2007 Ideal Industries www.idealindustries.com 24 /displayed Resolution determines how many digits after the decimal point –Higher resolution = more decimal places displayed 200V /  Ohms Measure of the resistance to electron flow Diode Device used to control direction of electron flow ) /Manual or Auto-ranging Displays –Range and Resolution –Icon Symbols –Numerical System Break Basic Measurement –DC Volts& AC /


HAM CRAM AMATEUR RADIO TECHNICIAN LICENSE REVIEW COURSE BEST WHEN IMMEDIATELY FOLLOWED BY THE EXAM Revised for post 1 July 2014 Exams Version Revision.

current decreases. The E, I product (watts) is not changed. Component Symbols Active Component Functions Diodes let current flow in one direction. Used to rectify, convert AC to DC/ 144.0 to 144.1 MHz - CW only. 1.25 meters, 219 to 220 MHz - Point/Point CW & Data only. Technician HF Privileges 3675 to 3725 kHz - 80 meter band - CW only/meters) & UHF (70 cm.) frequencies. Any Technician licensed HAM can contact it. International space station contact good for about 4 to 6 min. The building and launch of most/


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