Electrical coupling
... poles than on the sides: Longitudinal conduction of AP is faster than the transversal (about 3 times). ...
... poles than on the sides: Longitudinal conduction of AP is faster than the transversal (about 3 times). ...
Existing electrical power sources
... •Electromechanical generators produce alternating current •Less energy loss in transmission lines if power (P) is transmitted at higher voltages (V) and lower current(I). Lower current yields less power loss (Pl). P=IxV P l = I2 x R ...
... •Electromechanical generators produce alternating current •Less energy loss in transmission lines if power (P) is transmitted at higher voltages (V) and lower current(I). Lower current yields less power loss (Pl). P=IxV P l = I2 x R ...
Clothespin Microwave Transmitter and Receiver - Physics
... The capacitor on the transmitting antenna is slowly charged and rapidly discharges across the spark gap resulting in slow charge/rapid discharge bursts. This is an example of a “relaxation oscillator.” The charge resonating back and forth through the dipole antenna is analogous to the ringing of a b ...
... The capacitor on the transmitting antenna is slowly charged and rapidly discharges across the spark gap resulting in slow charge/rapid discharge bursts. This is an example of a “relaxation oscillator.” The charge resonating back and forth through the dipole antenna is analogous to the ringing of a b ...
A Virtual Thunderstorm: Experimenting with a Kelvin Electrostatic
... spark produced by the generator. My hypothesis was that an increase or decrease in water flow rate would have no significant effect on the DC voltage output of the generator, but would result in considerable differences between the spark times, with higher flow rates resulting in less time in betwee ...
... spark produced by the generator. My hypothesis was that an increase or decrease in water flow rate would have no significant effect on the DC voltage output of the generator, but would result in considerable differences between the spark times, with higher flow rates resulting in less time in betwee ...
PHAS2201 - Electricity and magnetism
... Maxwell’s equations (1860s) James Clerk Maxwell completes his formulation of the field equations of electromagnetism, now known as Maxwell’s equations. Hertz’s oscillating dipole experiment (1888) In 1888 Hertz generated electric waves using an electric circuit; the circuit contained a metal rod tha ...
... Maxwell’s equations (1860s) James Clerk Maxwell completes his formulation of the field equations of electromagnetism, now known as Maxwell’s equations. Hertz’s oscillating dipole experiment (1888) In 1888 Hertz generated electric waves using an electric circuit; the circuit contained a metal rod tha ...
EMPGUN1 Electromagnetic Pulse (EMP) Gun
... source that is short circuit functional by use of lossless reactive ballasting. This means that the capacitor can be charged without the use of an energy robbing resistor as only the real part of the complex current is seen by the battery supply. The modified source now supplies a current charge to ...
... source that is short circuit functional by use of lossless reactive ballasting. This means that the capacitor can be charged without the use of an energy robbing resistor as only the real part of the complex current is seen by the battery supply. The modified source now supplies a current charge to ...
Problem Set 11
... An electromagnetic wave consists of intertwined electric and magnetic fields, which jostle electrically charged particles, such as electrons and ions. We know from experience that a force does not accelerate all things the same—it is easier to push a lightweight bicycle than a heavy car, for example ...
... An electromagnetic wave consists of intertwined electric and magnetic fields, which jostle electrically charged particles, such as electrons and ions. We know from experience that a force does not accelerate all things the same—it is easier to push a lightweight bicycle than a heavy car, for example ...
WM-UR800 8 Channel UHF Wireless Microphone
... required in venues such as a KTV room, karaoke bar, restaurant, or auditorium. Provisions for rack mounting are built-in for convenience Features: Suitable for multi-room karaoke box, professional performance Supports up to 1600 individual channels to be used simultaneously Infrared frequency synchr ...
... required in venues such as a KTV room, karaoke bar, restaurant, or auditorium. Provisions for rack mounting are built-in for convenience Features: Suitable for multi-room karaoke box, professional performance Supports up to 1600 individual channels to be used simultaneously Infrared frequency synchr ...
FRS 104 Electrical System
... Interrupts the current flowing in the primary circuit of the ignition coil The collapsing current induces a high voltage in the secondary winding of the coil, causing a very high voltage to appear at the coil output for a short period—enough to arc across the electrodes of a spark plug The position ...
... Interrupts the current flowing in the primary circuit of the ignition coil The collapsing current induces a high voltage in the secondary winding of the coil, causing a very high voltage to appear at the coil output for a short period—enough to arc across the electrodes of a spark plug The position ...
Model BD-20A HIGH FREQUENCY GENERATOR OPERATING
... not cause harm, but might cause a slight discomfort, like the sensation felt when a spark jumps from the finger tip to a metal object after having walked across a carpet on a dry day. The output of the instrument is at a very low current. Also, the skin of the body has a very high resistance to the ...
... not cause harm, but might cause a slight discomfort, like the sensation felt when a spark jumps from the finger tip to a metal object after having walked across a carpet on a dry day. The output of the instrument is at a very low current. Also, the skin of the body has a very high resistance to the ...
POWER QUALITY -- An Indian Perspective
... fluctuations in Earth’s magnetic field (geomagnetic storms) --- potential difference between different points on Earth’s surface --- DC enters one transformer neutral and exits at another -half-cycle saturation of transformer cores ...
... fluctuations in Earth’s magnetic field (geomagnetic storms) --- potential difference between different points on Earth’s surface --- DC enters one transformer neutral and exits at another -half-cycle saturation of transformer cores ...
TX Miniature Triggered Spark Gaps Description and Use Application
... control the minimum cutoff voltage of the gap (see definition of cutoff voltage below). With regard to the cutoff voltage, Mode A will have a lower cutoff than Mode C and shorter delay times when operated near cutoff. Mode C can have long delay times when operated near cutoff; however the cutoff for ...
... control the minimum cutoff voltage of the gap (see definition of cutoff voltage below). With regard to the cutoff voltage, Mode A will have a lower cutoff than Mode C and shorter delay times when operated near cutoff. Mode C can have long delay times when operated near cutoff; however the cutoff for ...
产品名称 Product Name AUR9709 产品简述 Description 1.4MHz, 2A
... AUR9709 is a high efficiency step-down DC-DC voltage converter designed ideally for portable applications with battery voltage supplies. The chip operation is optimized by peak-current mode architecture with built-in synchronous power MOS switchers. It is automatically switching between the normal P ...
... AUR9709 is a high efficiency step-down DC-DC voltage converter designed ideally for portable applications with battery voltage supplies. The chip operation is optimized by peak-current mode architecture with built-in synchronous power MOS switchers. It is automatically switching between the normal P ...
Physics 4700 HOMEWORK III Due Feb 23
... frequency is f = 700 kHz. The tuner must be able to detect the AM sidebands which are located at ±5 kHz (695 kHz and 705 kHz) from the central frequency. An easy way to achieve the above is to use a series RLC circuit and take VR for the output voltage. The resonant frequency of this circuit is that ...
... frequency is f = 700 kHz. The tuner must be able to detect the AM sidebands which are located at ±5 kHz (695 kHz and 705 kHz) from the central frequency. An easy way to achieve the above is to use a series RLC circuit and take VR for the output voltage. The resonant frequency of this circuit is that ...
Physics 517/617 HOMEWORK III Due Oct 27
... frequency is f = 700 kHz. The tuner must be able to detect the AM sidebands which are located at ±5 kHz (695 kHz and 705 kHz) from the central frequency. An easy way to achieve the above is to use a series RLC circuit and take VR for the output voltage. The resonant frequency of this circuit is that ...
... frequency is f = 700 kHz. The tuner must be able to detect the AM sidebands which are located at ±5 kHz (695 kHz and 705 kHz) from the central frequency. An easy way to achieve the above is to use a series RLC circuit and take VR for the output voltage. The resonant frequency of this circuit is that ...
(with corrections indicated in lecture) MSWord file, due session 22
... c. For a machine load that is modeled as a 50 Hz voltage source of the same amplitude as the fundamental component of the terminal voltage, but lagging three degrees, behind a reactance of 0.35 Ohms at 50 Hz, find the fundamental current and the lowest nonzero current harmonic, magnitude and frequen ...
... c. For a machine load that is modeled as a 50 Hz voltage source of the same amplitude as the fundamental component of the terminal voltage, but lagging three degrees, behind a reactance of 0.35 Ohms at 50 Hz, find the fundamental current and the lowest nonzero current harmonic, magnitude and frequen ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""