Types SD 110, SD 210, SD 270 Namur Amplifier Relays
... Rated operational volt. 724 Dielectric voltage Rated impulse withstand volt. Rated operational power AC supply DC supply ...
... Rated operational volt. 724 Dielectric voltage Rated impulse withstand volt. Rated operational power AC supply DC supply ...
A Low-Power Battery-Free Tag for Body Sensor Networks
... Vth/16 (80 mV to 5 mV) as the preamplifier gain increases from 1 to 16. The comparator output in each channel is connected to spike selection logic, which allows detection of positivegoing spikes, negative-going spikes, both, or neither. A pulse-stretcher circuit follows this combinatorial block, ...
... Vth/16 (80 mV to 5 mV) as the preamplifier gain increases from 1 to 16. The comparator output in each channel is connected to spike selection logic, which allows detection of positivegoing spikes, negative-going spikes, both, or neither. A pulse-stretcher circuit follows this combinatorial block, ...
MAX8790 Six-String White LED Driver with Active General Description
... The MAX8790 has multiple features to protect the controller from fault conditions. Separate feedback loops limit the output voltage if one or more LEDs fail open or short. The controller features cycle-by-cycle current limit to provide consistent operation and soft-start capability. A thermal-shutdo ...
... The MAX8790 has multiple features to protect the controller from fault conditions. Separate feedback loops limit the output voltage if one or more LEDs fail open or short. The controller features cycle-by-cycle current limit to provide consistent operation and soft-start capability. A thermal-shutdo ...
LT3748 - 100V Isolated Flyback Controller
... The LT3748 is a current mode switching regulator controller designed specifically for the isolated flyback topology. The special problem normally encountered in such circuits is that information relating to the output voltage on the isolated secondary side of the transformer must be communicated to ...
... The LT3748 is a current mode switching regulator controller designed specifically for the isolated flyback topology. The special problem normally encountered in such circuits is that information relating to the output voltage on the isolated secondary side of the transformer must be communicated to ...
Preparation of Papers in a Two-Column Format for the
... To determinate the rated lifetime of fluorescent lamps, the Illuminating Engineering Society of North America (IESNA) specifies a test method using a large sample of lamps. This method consists of burning cycles, at which the lamps remain ON during 3 hours and OFF during 20 minutes. Using this metho ...
... To determinate the rated lifetime of fluorescent lamps, the Illuminating Engineering Society of North America (IESNA) specifies a test method using a large sample of lamps. This method consists of burning cycles, at which the lamps remain ON during 3 hours and OFF during 20 minutes. Using this metho ...
Transparent Electro-Optic Ceramics and Devices
... has greatly alleviated the aforementioned issues. PMN-PT is in a class of materials called relaxors, which have an isotropic minimum energy stable structure and upon applying an electric field can be relatively easily distorted, producing birefringence thus exhibiting the E-O effect. Its EO effect i ...
... has greatly alleviated the aforementioned issues. PMN-PT is in a class of materials called relaxors, which have an isotropic minimum energy stable structure and upon applying an electric field can be relatively easily distorted, producing birefringence thus exhibiting the E-O effect. Its EO effect i ...
High-precision Power Measurement of SiC Inverters
... Development of higher-efficiency, more compact motor drive systems is a key priority for manufacturers of EVs and HEVs as well as the rail industry, among other sectors of the economy, where companies have started using SiC power semiconductors in order to boost the efficiency and shrink the size of the ...
... Development of higher-efficiency, more compact motor drive systems is a key priority for manufacturers of EVs and HEVs as well as the rail industry, among other sectors of the economy, where companies have started using SiC power semiconductors in order to boost the efficiency and shrink the size of the ...
Probing Transistors at the Contact Level in Integrated Circuits
... (FIBs) systems are widely employed to image and measure the results of different IC fabrication steps. SEMs and FIBs are ubiquitous to most fabs and are workhorse instruments for metrology and failure analysis. The Zyvex KZ100 prober, which is compatible with both system platforms, greatly enhances ...
... (FIBs) systems are widely employed to image and measure the results of different IC fabrication steps. SEMs and FIBs are ubiquitous to most fabs and are workhorse instruments for metrology and failure analysis. The Zyvex KZ100 prober, which is compatible with both system platforms, greatly enhances ...
7_Armando-Maldonado_7
... Voltage magnitudes at the fault location calculated form the two junctions should equal ...
... Voltage magnitudes at the fault location calculated form the two junctions should equal ...
Dual-Output, Low Dropout Volt Regs w/ Integrated SVS for Split
... (that is, logic high) after a 120 ms delay when all three of the following conditions are met. First, VIN1 must be above the undervoltage condition. Second, the manual reset (MR) pin must be in a high impedance state. Third, VOUT2 must be above approximately 95% of its regulated voltage. To monitor ...
... (that is, logic high) after a 120 ms delay when all three of the following conditions are met. First, VIN1 must be above the undervoltage condition. Second, the manual reset (MR) pin must be in a high impedance state. Third, VOUT2 must be above approximately 95% of its regulated voltage. To monitor ...
Increasing High Speed Torque of Bipolar Stepper Motors
... chopper drive. A low value resistor in the ground lead of the H-Bridge converts the winding current into a proportional feedback voltage, and the feedback voltage is compared to a reference voltage (not shown). While the feedback voltage is less than the reference voltage, switches S1 and S4 apply t ...
... chopper drive. A low value resistor in the ground lead of the H-Bridge converts the winding current into a proportional feedback voltage, and the feedback voltage is compared to a reference voltage (not shown). While the feedback voltage is less than the reference voltage, switches S1 and S4 apply t ...
AD7249 数据手册DataSheet 下载
... Voltage Reference Output. The internal 5 V analog reference is provided at this pin. To operate the part using its internal reference, REFOUT should be connected to REFIN. Voltage Reference Input. It is internally buffered before being applied to both DACs. The nominal reference voltage for specifie ...
... Voltage Reference Output. The internal 5 V analog reference is provided at this pin. To operate the part using its internal reference, REFOUT should be connected to REFIN. Voltage Reference Input. It is internally buffered before being applied to both DACs. The nominal reference voltage for specifie ...
Illumination Utilization of Electrical Energ 6TH SEMESTER
... magnitude of AC currents exceeds the safe value of current of measuring instruments. Potential transformers are used where the voltage of an AC circuit exceeds 750 V as it is not possible to provide adequate insulation on measuring instruments for voltage more than this. ...
... magnitude of AC currents exceeds the safe value of current of measuring instruments. Potential transformers are used where the voltage of an AC circuit exceeds 750 V as it is not possible to provide adequate insulation on measuring instruments for voltage more than this. ...
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.