User`s Manual - Stanford Research Systems
... Each temperature input channel has its own 24-bit ADC with ten input ranges that can be automatically or manually selected. By default each sensor is read 10 times per second, but the rate can be set as low as 1 Hz or as high as the line frequency (50 or 60 Hz). Each input has an independent excitat ...
... Each temperature input channel has its own 24-bit ADC with ten input ranges that can be automatically or manually selected. By default each sensor is read 10 times per second, but the rate can be set as low as 1 Hz or as high as the line frequency (50 or 60 Hz). Each input has an independent excitat ...
quadruple bilateral analog switch
... Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Control-input diode current, II (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA I/O port ...
... Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Control-input diode current, II (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA I/O port ...
Virtex-5 FPGA PCB Designer’s Guide www.BDTIC.com/XILINX UG203 (v1.4) April 20, 2009
... PCB Technology Basics Printed circuit boards (PCBs) are electrical systems, with electrical properties as complicated as the discrete components and devices mounted to them. The PCB designer has complete control over many aspects of the PCB; however, current technology places constraints and limits ...
... PCB Technology Basics Printed circuit boards (PCBs) are electrical systems, with electrical properties as complicated as the discrete components and devices mounted to them. The PCB designer has complete control over many aspects of the PCB; however, current technology places constraints and limits ...
4 Transformers
... The “ampere-turns” stay constant at N 1 I 1 = N 2 I 2 ; this fundamental relationship holds well for power and distribution transformers. A transformer has a magnetic core that can carry large magnetic fields. The cold-rolled, grain-oriented steels used in cores have permeabilities of over 1000 time ...
... The “ampere-turns” stay constant at N 1 I 1 = N 2 I 2 ; this fundamental relationship holds well for power and distribution transformers. A transformer has a magnetic core that can carry large magnetic fields. The cold-rolled, grain-oriented steels used in cores have permeabilities of over 1000 time ...
ATTENUATION MEASUREMENT
... cutoff attenuators are that they are calculable and that high accuracy is achieved (0.001 dB/10 dB for 60 dB attenuation). For this reason, cutoff attenuators are often used as standard attenuators. Their main disadvantage is the high insertion loss (15 to 20 dB) because tight coupling has to be avo ...
... cutoff attenuators are that they are calculable and that high accuracy is achieved (0.001 dB/10 dB for 60 dB attenuation). For this reason, cutoff attenuators are often used as standard attenuators. Their main disadvantage is the high insertion loss (15 to 20 dB) because tight coupling has to be avo ...
8541
... "Applies to selenium and copper-oxide stacks, rectifiers and rectifier equipment used for supplying d.c. power from a.c. sources at frequencies up to 2 000 Hz. Does not apply to telecommunication rectifiers other than those for power supplies to such apparatus nor to rectifiers used as auxiliaries o ...
... "Applies to selenium and copper-oxide stacks, rectifiers and rectifier equipment used for supplying d.c. power from a.c. sources at frequencies up to 2 000 Hz. Does not apply to telecommunication rectifiers other than those for power supplies to such apparatus nor to rectifiers used as auxiliaries o ...
MagnaMaxDVR® Installation, Operation, and
... An aluminum die cast rotor core affords high mechanical integrity and low vibration at operating speeds. Amortisseur winding and coil supports are die cast as an integral part of the rotor. Laminations are 4-pole, one piece laminations which are shrunk fit and keyed to the shaft. No dovetails, cross ...
... An aluminum die cast rotor core affords high mechanical integrity and low vibration at operating speeds. Amortisseur winding and coil supports are die cast as an integral part of the rotor. Laminations are 4-pole, one piece laminations which are shrunk fit and keyed to the shaft. No dovetails, cross ...
Thevenin and Norton Theorem
... replaced by the Thevenin equivalent circuit. We can now make any calculations we desire within Network 2 and they will give the same results as if we still had Network 1 connected. ...
... replaced by the Thevenin equivalent circuit. We can now make any calculations we desire within Network 2 and they will give the same results as if we still had Network 1 connected. ...
DESIGN AND CONTROL OF A BIDIRECTIONAL DC/DC CONVERTER FOR
... The proposed DC/DC converter topology is a bidirectional boost converter with output filter. The stability of this topology is analysed considering the electric vehicle application. A motor drive can behave as a constant power load, which has negative incremental impedance, and thus holds unstable e ...
... The proposed DC/DC converter topology is a bidirectional boost converter with output filter. The stability of this topology is analysed considering the electric vehicle application. A motor drive can behave as a constant power load, which has negative incremental impedance, and thus holds unstable e ...
SUNNY TRIPOWER 8000TL/10000TL/12000TL/15000TL
... The Sunny Tripower 8000TL, 10000TL and 12000TL only have 4 string connections at input A. The Sunny Tripower may only be operated with PV arrays (PV modules and cabling) of protection class II. Do not connect any energy sources other than PV modules to the Sunny Tripower. Capacitive leakage currents ...
... The Sunny Tripower 8000TL, 10000TL and 12000TL only have 4 string connections at input A. The Sunny Tripower may only be operated with PV arrays (PV modules and cabling) of protection class II. Do not connect any energy sources other than PV modules to the Sunny Tripower. Capacitive leakage currents ...
“Remedial Action Scheme” Definition Development
... The SDT revised the straw man definition proposed in the SAMS‐SPCS report; however, the proposed definition is consistent with the SAMS‐SPCS intent. The drafting team revised the definition in response to stakeholder comments from the informal posting. As a result, it is no longer ne ...
... The SDT revised the straw man definition proposed in the SAMS‐SPCS report; however, the proposed definition is consistent with the SAMS‐SPCS intent. The drafting team revised the definition in response to stakeholder comments from the informal posting. As a result, it is no longer ne ...
QCM200 QCM25 - Stanford Research Systems
... and display it on the front panel. The stability and accuracy of the frequency counter is more than adequate for most QCM experiments. For extremely demanding applications, an external timebase, such as the SRS FS725 Rubidium Frequency Standard, can eliminate all frequency errors. The external 10 MH ...
... and display it on the front panel. The stability and accuracy of the frequency counter is more than adequate for most QCM experiments. For extremely demanding applications, an external timebase, such as the SRS FS725 Rubidium Frequency Standard, can eliminate all frequency errors. The external 10 MH ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.