Capacitors - La Favre home page
... If we connect a capacitor to a battery, as depicted in the schematic to the right, electrons will collect on the plate connected to the negative side of the battery. At the same time, electrons will leave the other plate of the capacitor and travel toward the battery’s positive terminal. As a result ...
... If we connect a capacitor to a battery, as depicted in the schematic to the right, electrons will collect on the plate connected to the negative side of the battery. At the same time, electrons will leave the other plate of the capacitor and travel toward the battery’s positive terminal. As a result ...
Gamry Instruments Software Tutorials and Primers
... response (current or voltage) of the metal sample is measured as it is polarized. The response is used to develop a model of the sample's corrosion behavior. Both controlled potential (potentiostatic) and controlled current (galvanostatic) polarization is useful. When the polarization is done potent ...
... response (current or voltage) of the metal sample is measured as it is polarized. The response is used to develop a model of the sample's corrosion behavior. Both controlled potential (potentiostatic) and controlled current (galvanostatic) polarization is useful. When the polarization is done potent ...
Electrical Circuits
... Short circuit − A short circuit is a fault in the current path. A short can be: • an unwanted path between two parts of a circuit. • an unwanted path between part of a circuit and ground. • an unwanted current path inside a component. • an unwanted path between two separate circuits. Excessive curre ...
... Short circuit − A short circuit is a fault in the current path. A short can be: • an unwanted path between two parts of a circuit. • an unwanted path between part of a circuit and ground. • an unwanted current path inside a component. • an unwanted path between two separate circuits. Excessive curre ...
- Lancaster EPrints
... interstrip capacitance Cis as the one between a strip and its two immediate neighbours has problems in incorporating properly the capacitance Cg between the strip and the metal plane (GNDP). If the GNDP is grounded the four-terminal measurement by the LCR meter excludes Cg as stray capacitors to the ...
... interstrip capacitance Cis as the one between a strip and its two immediate neighbours has problems in incorporating properly the capacitance Cg between the strip and the metal plane (GNDP). If the GNDP is grounded the four-terminal measurement by the LCR meter excludes Cg as stray capacitors to the ...
Technician Question Pool Effective July, 2003
... D. Only when the music is above 1280 MHz, and the music is a live performance T1A06 (C) [97.113a4, 97.211b, 97.217] When is the transmission of codes or ciphers allowed to hide the meaning of a message transmitted by an amateur station? A. Only during contests B. Only during nationally declared emer ...
... D. Only when the music is above 1280 MHz, and the music is a live performance T1A06 (C) [97.113a4, 97.211b, 97.217] When is the transmission of codes or ciphers allowed to hide the meaning of a message transmitted by an amateur station? A. Only during contests B. Only during nationally declared emer ...
- Gyanlo.com
... • Thus, the circuit can be used for wave-shaping. • It can also be used in a completely different way, as a limiter used to protect a sensitive circuit (e.g., OPAMP, Galvanometer). • The diodes conduct only when something abnormal happens. ...
... • Thus, the circuit can be used for wave-shaping. • It can also be used in a completely different way, as a limiter used to protect a sensitive circuit (e.g., OPAMP, Galvanometer). • The diodes conduct only when something abnormal happens. ...
Chapter 1 - Transformer
... the secondary side of the transformer. If the primary voltage is positive at the dotted end of the winding with respect to the undotted end, then the secondary voltage will be positive at the dotted end also. Voltage polarities are the same with respect to the doted on each side of the core. If ...
... the secondary side of the transformer. If the primary voltage is positive at the dotted end of the winding with respect to the undotted end, then the secondary voltage will be positive at the dotted end also. Voltage polarities are the same with respect to the doted on each side of the core. If ...
Fundamentals of Electronic Circuit Design
... Purely mechanical problems are often only a subset of larger multi-domain problems faced by the designer. Particularly, the solutions of many of today’s interesting problems require expertise in both mechanical engineering and electrical engineering. DVD players, digital projectors, modern cars, mac ...
... Purely mechanical problems are often only a subset of larger multi-domain problems faced by the designer. Particularly, the solutions of many of today’s interesting problems require expertise in both mechanical engineering and electrical engineering. DVD players, digital projectors, modern cars, mac ...
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.