division 60 - City of Chesapeake
... Design qualification testing shall be performed on new LED signal module designs, and when a major design change has been implemented on an existing design. The minimum sample quantity of LED signal modules shall be as stated for each test. Failure to meet requirements of any of these tests shall be ...
... Design qualification testing shall be performed on new LED signal module designs, and when a major design change has been implemented on an existing design. The minimum sample quantity of LED signal modules shall be as stated for each test. Failure to meet requirements of any of these tests shall be ...
Advel PSUs - Indico
... versions (see table), arranged in an N+1 or Dual Redundant configuration with Power Sharing. ...
... versions (see table), arranged in an N+1 or Dual Redundant configuration with Power Sharing. ...
BDTIC ICE3B0365J-T CoolSET -F3
... VCC range up to 26V is provided. This covers the changes in the auxiliary supply voltage if a CV/CC regulation is implemented on the secondary side. Furthermore an Active Burst Mode is integrated to fullfill the lowest Standby Power Requirements <100mW at no load and Vin = 270VAC. As during Active B ...
... VCC range up to 26V is provided. This covers the changes in the auxiliary supply voltage if a CV/CC regulation is implemented on the secondary side. Furthermore an Active Burst Mode is integrated to fullfill the lowest Standby Power Requirements <100mW at no load and Vin = 270VAC. As during Active B ...
MAX1992/MAX1993 Quick-PWM Step-Down Controllers with Inductor Saturation Protection and Dynamic Output Voltages
... Note 2: When the inductor is in continuous conduction, the output voltage has a DC regulation level higher than the error comparator threshold by 50% of the output ripple. In discontinuous conduction (SKIP = GND, light load), the output voltage has a DC regulation level higher than the trip level by ...
... Note 2: When the inductor is in continuous conduction, the output voltage has a DC regulation level higher than the error comparator threshold by 50% of the output ripple. In discontinuous conduction (SKIP = GND, light load), the output voltage has a DC regulation level higher than the trip level by ...
Millimeter-wave and Terahertz Devices Q. Hu
... at Purdue University, and Mr. John Reno at Sandia National Lab. Semiconductor quantum wells are human-made quantum mechanical systems in which the energy levels can be designed and engineered to be of any value. Consequently, unipolar lasers based on intersubband transitions (electrons that make las ...
... at Purdue University, and Mr. John Reno at Sandia National Lab. Semiconductor quantum wells are human-made quantum mechanical systems in which the energy levels can be designed and engineered to be of any value. Consequently, unipolar lasers based on intersubband transitions (electrons that make las ...
General Specifications UT35A/UT32A Digital Indicating Controllers
... Effect of signal source resistance: 0.1 μV/Ω or less 2 kΩ or less for DC voltage input Effect of signal source resistance: about 0.01%/100 Ω • Allowable wiring resistance Up to 150 Ω per line for resistance-temperature detector (RTD) input (conductor resistance between the three lin ...
... Effect of signal source resistance: 0.1 μV/Ω or less 2 kΩ or less for DC voltage input Effect of signal source resistance: about 0.01%/100 Ω • Allowable wiring resistance Up to 150 Ω per line for resistance-temperature detector (RTD) input (conductor resistance between the three lin ...
ECE 469 Power Electronics Lab Manual
... Power electronics is a broad area. Experts in the field find a need for knowledge in advanced circuit theory, electric power equipment, electromagnetic design, radiation, semiconductor physics and processing, analog and digital circuit design, control systems, and a tremendous range of sub-areas. Ma ...
... Power electronics is a broad area. Experts in the field find a need for knowledge in advanced circuit theory, electric power equipment, electromagnetic design, radiation, semiconductor physics and processing, analog and digital circuit design, control systems, and a tremendous range of sub-areas. Ma ...
AC analyses
... point and treating it as a linear circuit. Here are a few things to note: To find out more, see How PSpice A/D treats nonlinear devices on page 329. ...
... point and treating it as a linear circuit. Here are a few things to note: To find out more, see How PSpice A/D treats nonlinear devices on page 329. ...
ADF4360-1 Integrated Synthesizer and VCO Data Sheet (REV. 0)
... may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may aff ...
... may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may aff ...
Data Sheet AFBR-709SMZ 10Gb Ethernet, 850 nm, 10GBASE-SR/SW, SFP+ Transceiver
... The AFBR-709SMZ high speed transmit and receive in terfaces require SFF-8431 compliant signal lines on the host board. To simplify board requirements, biasing resistors and AC coupling capacitors are incorporated into the SFP+ transceiver module (per SFF-8431) and hence are not required on the hos ...
... The AFBR-709SMZ high speed transmit and receive in terfaces require SFF-8431 compliant signal lines on the host board. To simplify board requirements, biasing resistors and AC coupling capacitors are incorporated into the SFP+ transceiver module (per SFF-8431) and hence are not required on the hos ...
tx? `Vq
... ment this method. It can be applied especially to control where the point of A is lit up and becomes black, the liquid crystal panels in which the control voltages are point C is also excited and becomes grey when it should periodically reversed. 20 have remained white like the points B and B. At pr ...
... ment this method. It can be applied especially to control where the point of A is lit up and becomes black, the liquid crystal panels in which the control voltages are point C is also excited and becomes grey when it should periodically reversed. 20 have remained white like the points B and B. At pr ...
Electrodynamics and Optics: Problems 1. A point charge 1 μC is
... 22. The voltmeter with an internal resistance of 20 kΩ intended for measuring a potential difference up to 50 mV. What resistance should be selected and how should it be connected to measure a potential difference up to 100 V? What is the actual potential difference if the pointer shows 30 mV? (We b ...
... 22. The voltmeter with an internal resistance of 20 kΩ intended for measuring a potential difference up to 50 mV. What resistance should be selected and how should it be connected to measure a potential difference up to 100 V? What is the actual potential difference if the pointer shows 30 mV? (We b ...
A Comparative Study between Z-Source Inverter and Voltage
... There are various methods can be used to control ZSI. This can be classified into two according to the different shoot-through states insertion methods. In first method shoot-through are generated by properly level shifting the modulation signals of voltage source inverter. Shoot-through states then ...
... There are various methods can be used to control ZSI. This can be classified into two according to the different shoot-through states insertion methods. In first method shoot-through are generated by properly level shifting the modulation signals of voltage source inverter. Shoot-through states then ...
Eliminate Reactive Power and Increase System Efficiency of Isolated Bidirectional
... (3), and Fig. 2 that when V2 = nV1 , there is always a current flowing in the transformer, even for phase shift D = 0 (where output power P = 0). When V2 = nV1 , there is always a current flowing in the transformer, except for D = 0. This current contributes to the reactive power in the circuit. Fi ...
... (3), and Fig. 2 that when V2 = nV1 , there is always a current flowing in the transformer, even for phase shift D = 0 (where output power P = 0). When V2 = nV1 , there is always a current flowing in the transformer, except for D = 0. This current contributes to the reactive power in the circuit. Fi ...
PAM3131 Description Pin Assignments
... Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: ...
... Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: ...
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.