Application for Leased Circuit
... The following additional equipment/attachments are required _________________________ I/We desire to have General Manager ___________________________________________ as the controlling and billing authority. ...
... The following additional equipment/attachments are required _________________________ I/We desire to have General Manager ___________________________________________ as the controlling and billing authority. ...
2300_Homework_06
... 4. The device in Figure 1 can be modeled with a voltage source in series with a resistance. The current and voltage for the device are related as shown in the plot in Figure 2. The device has been connected in a circuit shown in Figure 3. Find iX. PEQWS Module 4 Problem 4 A iT in [mA] ...
... 4. The device in Figure 1 can be modeled with a voltage source in series with a resistance. The current and voltage for the device are related as shown in the plot in Figure 2. The device has been connected in a circuit shown in Figure 3. Find iX. PEQWS Module 4 Problem 4 A iT in [mA] ...
Pre-Lab Work and Quiz - facstaff.bucknell.edu
... Your task is to design and test an attenuator circuit like the one shown in Figure 3. The bench-top function generator, which has an output resistance Rg of 50 , will serve as the AC signal source. The generator voltage vg should be no more than approximately 100 mVpk to ensure that the signal curr ...
... Your task is to design and test an attenuator circuit like the one shown in Figure 3. The bench-top function generator, which has an output resistance Rg of 50 , will serve as the AC signal source. The generator voltage vg should be no more than approximately 100 mVpk to ensure that the signal curr ...
Series Resonance
... frequency for the series resonant circuit on the same set of axes, we obtain the curves shown in Fig.20.17. Note that the VR curve has the same shape as the I curve and a peak value equal to the magnitude of the input voltage E. The VC curve build up slowly at first from a value equal to the input v ...
... frequency for the series resonant circuit on the same set of axes, we obtain the curves shown in Fig.20.17. Note that the VR curve has the same shape as the I curve and a peak value equal to the magnitude of the input voltage E. The VC curve build up slowly at first from a value equal to the input v ...
W6NL Mods for the TS-930
... on Isla San Cristobal, I undertook to obtain and refurbish a number of 930s, but we were disappointed by the lack of reliability we experienced. The problems we observed included 1) Several radios experienced outright power supply failure, and one had a difficult-to-trace low frequency oscillation i ...
... on Isla San Cristobal, I undertook to obtain and refurbish a number of 930s, but we were disappointed by the lack of reliability we experienced. The problems we observed included 1) Several radios experienced outright power supply failure, and one had a difficult-to-trace low frequency oscillation i ...
A.1. EL1001 Introduction to Electric Circuit
... electrical engineering through the skills of basic knowledge in electrical engineering : Electric Circuit Analysis. The content covers DC circuits and one-phase and three-phase AC circuits. Electric circuit system includes energy and information aspects, thus examples of the aspects should be provid ...
... electrical engineering through the skills of basic knowledge in electrical engineering : Electric Circuit Analysis. The content covers DC circuits and one-phase and three-phase AC circuits. Electric circuit system includes energy and information aspects, thus examples of the aspects should be provid ...
Amateur Radio Technician Class Element 2 Course Presentation
... Digital circuits called a synthesizer control the receive and transmit frequencies. ...
... Digital circuits called a synthesizer control the receive and transmit frequencies. ...
using the sa605/615 if processor ic
... bandwidth. The circuit of figure 5 illustrates one approach to use L/C based filters in conjunction with the SA605 to produce a IF of 21.4MHz with 1.5MHz of BW. In addition a TTL oscillator is fed to the OSC (pin 4) of the SA605 so as to enable the mixer to down covert a incoming RF @ 85.4 MHz to 21 ...
... bandwidth. The circuit of figure 5 illustrates one approach to use L/C based filters in conjunction with the SA605 to produce a IF of 21.4MHz with 1.5MHz of BW. In addition a TTL oscillator is fed to the OSC (pin 4) of the SA605 so as to enable the mixer to down covert a incoming RF @ 85.4 MHz to 21 ...
Crystal radio
A crystal radio receiver, also called a crystal set or cat's whisker receiver, is a very simple radio receiver, popular in the early days of radio. It needs no other power source but that received solely from the power of radio waves received by a wire antenna. It gets its name from its most important component, known as a crystal detector, originally made from a piece of crystalline mineral such as galena. This component is now called a diode.Crystal radios are the simplest type of radio receiver and can be made with a few inexpensive parts, such as a wire for an antenna, a coil of copper wire for adjustment, a capacitor, a crystal detector, and earphones. They are distinct from ordinary radios as they are passive receivers, while other radios use a separate source of electric power such as a battery or the mains power to amplify the weak radio signal so as to make it louder. Thus, crystal sets produce rather weak sound and must be listened to with sensitive earphones, and can only receive stations within a limited range.The rectifying property of crystals was discovered in 1874 by Karl Ferdinand Braun, and crystal detectors were developed and applied to radio receivers in 1904 by Jagadish Chandra Bose, G. W. Pickard and others.Crystal radios were the first widely used type of radio receiver, and the main type used during the wireless telegraphy era. Sold and homemade by the millions, the inexpensive and reliable crystal radio was a major driving force in the introduction of radio to the public, contributing to the development of radio as an entertainment medium around 1920.After about 1920, crystal sets were superseded by the first amplifying receivers, which used vacuum tubes (Audions), and became obsolete for commercial use. They, however, continued to be built by hobbyists, youth groups, and the Boy Scouts as a way of learning about the technology of radio. Today they are still sold as educational devices, and there are groups of enthusiasts devoted to their construction who hold competitions comparing the performance of their home-built designs.Crystal radios receive amplitude modulated (AM) signals, and can be designed to receive almost any radio frequency band, but most receive the AM broadcast band. A few receive shortwave bands, but strong signals are required. The first crystal sets received wireless telegraphy signals broadcast by spark-gap transmitters at frequencies as low as 20 kHz.