HID Lamp Service Guide
... In a metal halide lamp, the arc discharges through the combined vapors of mercury and certain compounds of iodine. The halide compounds help strengthen yellows, greens and blues, so the overall color rendering of metal halide lamps is green-white. Reds and oranges appear dulled. Phosphor coatings on ...
... In a metal halide lamp, the arc discharges through the combined vapors of mercury and certain compounds of iodine. The halide compounds help strengthen yellows, greens and blues, so the overall color rendering of metal halide lamps is green-white. Reds and oranges appear dulled. Phosphor coatings on ...
Circuit Analysis Demystified - one step easy a wonderful site
... it is also one of the most difficult courses that students face when attempting to learn electrical engineering. At most universities it serves as a “weed out” course, where students not “cut out” for electrical engineering are shown the exit. A friend once referred to the course as “circuit paralysi ...
... it is also one of the most difficult courses that students face when attempting to learn electrical engineering. At most universities it serves as a “weed out” course, where students not “cut out” for electrical engineering are shown the exit. A friend once referred to the course as “circuit paralysi ...
Metal halide lamps
... material allows for stable operation at high temperatures, is resistant to sudden changes in temperature and is transparent. The well proven HQI lamps are produced in various different forms using this technology. H Q I ...
... material allows for stable operation at high temperatures, is resistant to sudden changes in temperature and is transparent. The well proven HQI lamps are produced in various different forms using this technology. H Q I ...
Electronic Circuits for the Hobbyist, by VA3AVR
... to the input of the receiver. That gives the receiver non-amplified access to the auxiliary antenna jack, at J1, as well as the on-board telescoping whip antenna. With switch S2 in its power-on position, the input and ouput jacks are disconnected and B1 (a 9 volt battery) is connected to the circuit ...
... to the input of the receiver. That gives the receiver non-amplified access to the auxiliary antenna jack, at J1, as well as the on-board telescoping whip antenna. With switch S2 in its power-on position, the input and ouput jacks are disconnected and B1 (a 9 volt battery) is connected to the circuit ...
AN84 - Linear Technology Magazine Circuit Collection, Volume IV
... and to track it up to a maximum of fMAX = 2 • fMIN. A logic signal may also be coupled to PLL LPF to effect a 2:1 frequency shift, provided that the initial frequency has been set to less than 200kHz. ...
... and to track it up to a maximum of fMAX = 2 • fMIN. A logic signal may also be coupled to PLL LPF to effect a 2:1 frequency shift, provided that the initial frequency has been set to less than 200kHz. ...
Piezoelectric transformer based power converters
... to achieve a satisfying shape change. The DEAP devices are often referred to as ”artificial muscles” and the technology is explained in more detail in section 2.2. Within the last decade new high performing and low cost DEAP materials have emerged that enables the commercialization of the technology ...
... to achieve a satisfying shape change. The DEAP devices are often referred to as ”artificial muscles” and the technology is explained in more detail in section 2.2. Within the last decade new high performing and low cost DEAP materials have emerged that enables the commercialization of the technology ...
ACTIVE CONVERTER BASED ON THE VIENNA RECTIFIER TOPOLOGY INTERFACING A
... that the current drawn from the mains source is in phase with the mains voltage (effectively sinusoidal). The zero phase angle, between the mains voltage and the current, translates into a high power factor which, in turn, ensures that the source is not loaded reactively. For higher power outputs it ...
... that the current drawn from the mains source is in phase with the mains voltage (effectively sinusoidal). The zero phase angle, between the mains voltage and the current, translates into a high power factor which, in turn, ensures that the source is not loaded reactively. For higher power outputs it ...
AN84 - Linear Technology Magazine Circuit Collection, Volume IV
... and to track it up to a maximum of fMAX = 2 • fMIN. A logic signal may also be coupled to PLL LPF to effect a 2:1 frequency shift, provided that the initial frequency has been set to less than 200kHz. ...
... and to track it up to a maximum of fMAX = 2 • fMIN. A logic signal may also be coupled to PLL LPF to effect a 2:1 frequency shift, provided that the initial frequency has been set to less than 200kHz. ...
Stray insensitive switched capacitor composite operational amplifiers
... finite dc gain, smaller bandwidth, lower slew rate, finite input impedance performance The switched capacitor is implemented using both the toggle switch capacitor and the modifed opencircuit floating resistor techniques The composite operational amplifier is implemented using the C20A-1 and C20A-2 ...
... finite dc gain, smaller bandwidth, lower slew rate, finite input impedance performance The switched capacitor is implemented using both the toggle switch capacitor and the modifed opencircuit floating resistor techniques The composite operational amplifier is implemented using the C20A-1 and C20A-2 ...
Welding of Light-weight In-Line Galvanized Tubular Steel
... some applications; these wires are particularly convenient since a shielding gas is not needed; however, these electrodes tend to produce a lot of smoke compared to other wires, so ventilation will be even more important than with solid or metal cored wire. Follow the electrode manufacturer’s recomm ...
... some applications; these wires are particularly convenient since a shielding gas is not needed; however, these electrodes tend to produce a lot of smoke compared to other wires, so ventilation will be even more important than with solid or metal cored wire. Follow the electrode manufacturer’s recomm ...
RS Series AC and DC Power Source User Manual
... Similarly, other power ground lines including those to application and maintenance equipment must be grounded properly for both personnel and equipment safety. Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable. In normal operation, the operator ...
... Similarly, other power ground lines including those to application and maintenance equipment must be grounded properly for both personnel and equipment safety. Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable. In normal operation, the operator ...
Welding
... Slavyanov, and an American, C.L. Coffin in the late 1800s, even as carbon arc welding, which used a carbon electrode, gained popularity. Around 1900, A.P. Strohmenger released a coated metal electrode in Britain, which gave a more stable arc, and in 1919, alternating current welding was invented by ...
... Slavyanov, and an American, C.L. Coffin in the late 1800s, even as carbon arc welding, which used a carbon electrode, gained popularity. Around 1900, A.P. Strohmenger released a coated metal electrode in Britain, which gave a more stable arc, and in 1919, alternating current welding was invented by ...
Digital Circuits.
... of glass or the open switch, a near infinite amount of energy would be required. In purely practical terms, electrons do not move through pieces of glass or open switches and there is no current flow. No current flow means that no charge is moved and no work is done. A piece of glass or an open swit ...
... of glass or the open switch, a near infinite amount of energy would be required. In purely practical terms, electrons do not move through pieces of glass or open switches and there is no current flow. No current flow means that no charge is moved and no work is done. A piece of glass or an open swit ...
Resonant Behaviour of Pulse Generators for the Efficient Drive of
... Novel and state-of-the-art power electronic pulse inverter topologies are investigated, experimentally validated and classified in terms of their main properties. The novel topologies introduced are based on pure resonant operation or a combination of resonant operation and inductor pre-charge which ...
... Novel and state-of-the-art power electronic pulse inverter topologies are investigated, experimentally validated and classified in terms of their main properties. The novel topologies introduced are based on pure resonant operation or a combination of resonant operation and inductor pre-charge which ...
V-Contact VSC Installation and service instructions 7.2/12 kV
... which attracts and moves the core into the opposite position (fig. C). Every opening and closing operation creates a magnetic field concordant with the one generated by the permanent magnets, with the advantage, during service, of keeping the intensity of the field itself constant as the number of o ...
... which attracts and moves the core into the opposite position (fig. C). Every opening and closing operation creates a magnetic field concordant with the one generated by the permanent magnets, with the advantage, during service, of keeping the intensity of the field itself constant as the number of o ...
+3.0V to+5.5V, 1µA, RS-232/RS-485/422 Multiprotocol Transceivers General Description Features
... All devices incorporate a proprietary low-dropout transmitter output stage and an on-board dual charge pump to allow RS-232 and RS-485/422 compliant performance from a +3V to +5.5V supply. The receivers feature true fail-safe circuitry that guarantees a logichigh receiver output when the receiver in ...
... All devices incorporate a proprietary low-dropout transmitter output stage and an on-board dual charge pump to allow RS-232 and RS-485/422 compliant performance from a +3V to +5.5V supply. The receivers feature true fail-safe circuitry that guarantees a logichigh receiver output when the receiver in ...
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.""