Ch03 - Computer Systems Technology Internet Site
... Radio waves are transmitted and received by using an antenna. An antenna is a copper wire or similar device that has one end up in the air and the other end connected to the ground or a grounded device. When transmitting, the radio waves are directed to strike this wire (the length of an antenna sho ...
... Radio waves are transmitted and received by using an antenna. An antenna is a copper wire or similar device that has one end up in the air and the other end connected to the ground or a grounded device. When transmitting, the radio waves are directed to strike this wire (the length of an antenna sho ...
EEE 531--Semiconductor Device Theory I
... Bipolar transistors (current gain, high level injection, current crowding and Early effect, Ebers-Moll and Gummel-Poon models, secondary effects, transient analysis, thermal effects). (Part of this covered in 532) ...
... Bipolar transistors (current gain, high level injection, current crowding and Early effect, Ebers-Moll and Gummel-Poon models, secondary effects, transient analysis, thermal effects). (Part of this covered in 532) ...
The Grimeton VLF Transmitter SAQ
... years old Ultra Long Wave station SAQ was going to be started end of August • It so happened that we were on the West Coast and could visit! ...
... years old Ultra Long Wave station SAQ was going to be started end of August • It so happened that we were on the West Coast and could visit! ...
ch2_hr1
... What happens during radio communication? • This sounds pretty simple, but it in reality is pretty complex • This complexity is one thing that makes ham radio fun…learning all about how radios work • Don’t be intimidated, you will be required to only know the basics, but you can learn as much about ...
... What happens during radio communication? • This sounds pretty simple, but it in reality is pretty complex • This complexity is one thing that makes ham radio fun…learning all about how radios work • Don’t be intimidated, you will be required to only know the basics, but you can learn as much about ...
RSP2 – Guide to using the High Z Port
... thinking from the RSP1. The reasoning here is that you seldom get a single antenna that gives optimised performance from VLF to UHF, and so the majority of people will tend to use separate antennas for HF and VHF/UHF. We chose a 1 K ohm impedance for this port, to simplify the connection to a random ...
... thinking from the RSP1. The reasoning here is that you seldom get a single antenna that gives optimised performance from VLF to UHF, and so the majority of people will tend to use separate antennas for HF and VHF/UHF. We chose a 1 K ohm impedance for this port, to simplify the connection to a random ...
Semiconductor Diodes Semiconductors
... range of 103 to 10-8 S per cm). • Typical semi-conductive materials are silicon (Si), germanium (Ge), gallium arsenide (GaAs), and silicon carbide (SiC). • Silicon, atomic number 14, is the eighth most common element by mass in the universe. ...
... range of 103 to 10-8 S per cm). • Typical semi-conductive materials are silicon (Si), germanium (Ge), gallium arsenide (GaAs), and silicon carbide (SiC). • Silicon, atomic number 14, is the eighth most common element by mass in the universe. ...
Alloys and elements
... A semiconductor is a material with electrical conductivity due to electron flow (as opposed toionic conductivity) intermediate in magnitude between that of a conductor and an insulator. This means a conductivity roughly in the range of 103 to 10−8 siemens per centimeter. Semiconductor materials are ...
... A semiconductor is a material with electrical conductivity due to electron flow (as opposed toionic conductivity) intermediate in magnitude between that of a conductor and an insulator. This means a conductivity roughly in the range of 103 to 10−8 siemens per centimeter. Semiconductor materials are ...
BTG-6 Green Laser Pointer - Engraved Green
... The BTG-6-BE green laser pointer is our standard economy model. Pocket size (134mm) for easy carry - great for presentations, briefings, general use. Matte black tube finish; engraves in vibrant gold (exposes brass casing). The Z-Bolt® BTG-6-BE ships in a gun metal travel & carry case and includes 2 ...
... The BTG-6-BE green laser pointer is our standard economy model. Pocket size (134mm) for easy carry - great for presentations, briefings, general use. Matte black tube finish; engraves in vibrant gold (exposes brass casing). The Z-Bolt® BTG-6-BE ships in a gun metal travel & carry case and includes 2 ...
Tingye Li, Doctor of Science in Engineering
... his youth in foreign countries. While in South Africa, Li studied Electrical Engineering at the University of the Witwatersrand, Johannesburg, and completed his final year in 1952, graduating with a BSc.(Eng) in Electrical Engineering, cum laude in 1953. Li then furthered his education in the USA, w ...
... his youth in foreign countries. While in South Africa, Li studied Electrical Engineering at the University of the Witwatersrand, Johannesburg, and completed his final year in 1952, graduating with a BSc.(Eng) in Electrical Engineering, cum laude in 1953. Li then furthered his education in the USA, w ...
Loop Antenna - TheToppersWay
... have small Radiation Resistances(smaller than their loss resistances) Not used in transmitting mode Responds to the magnetic field rather than the electric field. Hence eliminates Noise ...
... have small Radiation Resistances(smaller than their loss resistances) Not used in transmitting mode Responds to the magnetic field rather than the electric field. Hence eliminates Noise ...
Practical 19 Characteristics of diodes
... Diodes come in many different shapes and sizes. The ability for diodes to effectively allow current to flow in one direction through a circuit is used in many electronic circuits. Diodes are often used to prevent damage to a circuit should a reverse voltage be applied to it. They are also used in ‘r ...
... Diodes come in many different shapes and sizes. The ability for diodes to effectively allow current to flow in one direction through a circuit is used in many electronic circuits. Diodes are often used to prevent damage to a circuit should a reverse voltage be applied to it. They are also used in ‘r ...
System Block Diagram
... and the front-end module (FEM) of a mobile phone and provides superior transmit and receive chain optimization over the full 824 MHz – 2170 MHz mobile frequency range. WiSpry’s innovative tunable capacitor technology enables a completely new type of RF matching component that combines excellent RF p ...
... and the front-end module (FEM) of a mobile phone and provides superior transmit and receive chain optimization over the full 824 MHz – 2170 MHz mobile frequency range. WiSpry’s innovative tunable capacitor technology enables a completely new type of RF matching component that combines excellent RF p ...
23.5. Semiconductor Devices
... Today it is possible to combine arrays of tens of thousands of transistors, diodes, resistors, and capacitors on a tiny chip of silicon that usually measures less than a centimeter on a side. These arrays are called integrated circuits (ICs) and can be designed to perform almost any desired electron ...
... Today it is possible to combine arrays of tens of thousands of transistors, diodes, resistors, and capacitors on a tiny chip of silicon that usually measures less than a centimeter on a side. These arrays are called integrated circuits (ICs) and can be designed to perform almost any desired electron ...
Optical Phase Conductor
... Optical Phase Conductor Optical Phase Conductor (OPPC) is used as an alternative telecommunications solution when there is no existing ground wire, meaning Optical Ground Wire (OPGW) is not a viable option. The basic construction is similar to conventional OPGW, only it is designed to simulate the m ...
... Optical Phase Conductor Optical Phase Conductor (OPPC) is used as an alternative telecommunications solution when there is no existing ground wire, meaning Optical Ground Wire (OPGW) is not a viable option. The basic construction is similar to conventional OPGW, only it is designed to simulate the m ...
Antenna Inputs With Voltage Caution All of the Hi
... All of the Hi-Z Array systems use voltage over coax to supply operating power for their Hi-Z amps. The power is injected into the Antenna connectors on the controllers using normal inductors suitable for the purpose. It is certainly possible to damage these internal inductors if an intentional or un ...
... All of the Hi-Z Array systems use voltage over coax to supply operating power for their Hi-Z amps. The power is injected into the Antenna connectors on the controllers using normal inductors suitable for the purpose. It is certainly possible to damage these internal inductors if an intentional or un ...
File
... of heavily doped p and n regions separated by an intrinsic region When in reverse-bias, the pin diode acts like a nearly constant capacitance When forward-bias, it acts like a current-controlled variable ...
... of heavily doped p and n regions separated by an intrinsic region When in reverse-bias, the pin diode acts like a nearly constant capacitance When forward-bias, it acts like a current-controlled variable ...
Homework 3
... A diode laser has a 500-µm cavity length and an effective absorption coefficient α of 10 cm-1. For uncoated facets, the reflectivity at each end R is 0.32. (a) What is the optical gain at threshold? (b) If the reflectivity at once face is increased to 90%, what does the gain at threshold become? (Wi ...
... A diode laser has a 500-µm cavity length and an effective absorption coefficient α of 10 cm-1. For uncoated facets, the reflectivity at each end R is 0.32. (a) What is the optical gain at threshold? (b) If the reflectivity at once face is increased to 90%, what does the gain at threshold become? (Wi ...
E - the GMU ECE Department
... Output Pow er I sc Voc FF •Si solar cell with 15-20% efficiency dominates the market now •Theoretically, the highest efficiency (~24%) can be obtained with 1.9eV >Eg>1.2eV. Larger Eg lead to too low Isc (low light absorption); smaller Eg leads to too low Voc. •Tandem solar cells gets 35% effici ...
... Output Pow er I sc Voc FF •Si solar cell with 15-20% efficiency dominates the market now •Theoretically, the highest efficiency (~24%) can be obtained with 1.9eV >Eg>1.2eV. Larger Eg lead to too low Isc (low light absorption); smaller Eg leads to too low Voc. •Tandem solar cells gets 35% effici ...
23.5. Semiconductor Devices
... In a typical audio system, diodes are used in the power supply to create a dc voltage from the ac voltage present at the wall socket. This dc voltage is necessary so the transistors in the amplifier can perform their task of enlarging the small ac voltages originating in the compact disc player, etc ...
... In a typical audio system, diodes are used in the power supply to create a dc voltage from the ac voltage present at the wall socket. This dc voltage is necessary so the transistors in the amplifier can perform their task of enlarging the small ac voltages originating in the compact disc player, etc ...