surge protective devices
... When a surge voltage is produced in an electrical conductor, an over-current with a magnitude of several kA is lead to earth, it can reach installation through low voltage network, data lines (voice & data), high frequency lines (antennas) or conductors of earth terminations. In order to avoid the o ...
... When a surge voltage is produced in an electrical conductor, an over-current with a magnitude of several kA is lead to earth, it can reach installation through low voltage network, data lines (voice & data), high frequency lines (antennas) or conductors of earth terminations. In order to avoid the o ...
4. Preamplifier near CCD - Caltech Optical Observatories
... current of the preamp and switch leakage current. To the extent that these currents and the coupling capacitors match, this produces a common mode ramp, which is rejected by the differential ADC buffer. Given typical values of 100nF for the AC coupler and 3nA switch leakage (which dominates 25pA op ...
... current of the preamp and switch leakage current. To the extent that these currents and the coupling capacitors match, this produces a common mode ramp, which is rejected by the differential ADC buffer. Given typical values of 100nF for the AC coupler and 3nA switch leakage (which dominates 25pA op ...
RMR 50 480 - Acuity Brands
... High bay lighting control is made simple with the RMR 50 480 Series occupancy sensor. This unique sensor is line powered and enables direct switching of 480 VAC lighting loads. Designed to recess mount into a linear high bay fluorescent fixture using standard 4” x 4” junction box spacing, this senso ...
... High bay lighting control is made simple with the RMR 50 480 Series occupancy sensor. This unique sensor is line powered and enables direct switching of 480 VAC lighting loads. Designed to recess mount into a linear high bay fluorescent fixture using standard 4” x 4” junction box spacing, this senso ...
MAX9156 Low-Jitter, Low-Noise LVPECL-to-LVDS Level Translator in an SC70 Package General Description
... a single LVDS output. It is ideal for interfacing between LVPECL and LVDS interfaces in systems that require minimum jitter, noise, power, and space. Ultra-low, 23ps p-p added deterministic jitter and 0.6psRMS added random jitter ensure reliable communication in high-speed links that are highly sens ...
... a single LVDS output. It is ideal for interfacing between LVPECL and LVDS interfaces in systems that require minimum jitter, noise, power, and space. Ultra-low, 23ps p-p added deterministic jitter and 0.6psRMS added random jitter ensure reliable communication in high-speed links that are highly sens ...
May 2001 LT1815: 220MHz, 1500V/µs Amplifier Saves Space and Power
... input signal across the internal resistor R1. The input common mode range extends to typically 0.8V from either supply, and is limited by a VBE of Q10/Q14 plus a VSAT of Q5/Q6. NPN and PNP current mirrors Q10–Q11 and Q14–Q15 mirror the current generated through R1 into the high impedance node. Casco ...
... input signal across the internal resistor R1. The input common mode range extends to typically 0.8V from either supply, and is limited by a VBE of Q10/Q14 plus a VSAT of Q5/Q6. NPN and PNP current mirrors Q10–Q11 and Q14–Q15 mirror the current generated through R1 into the high impedance node. Casco ...
Integration of PV/Battery Hybrid Energy Conversion
... a drawback that the total efficiency may become low if the number of stages are high, owing to power losses in the switching devices [4]. A quadratic converter configuration is also available that uses single switch and acheives quatratic gain [4]. An interesting attractive converter topology is a hig ...
... a drawback that the total efficiency may become low if the number of stages are high, owing to power losses in the switching devices [4]. A quadratic converter configuration is also available that uses single switch and acheives quatratic gain [4]. An interesting attractive converter topology is a hig ...
DACs
... A=αD D is dimensionless α sets both the full scale and the dimension of A. Example: α = IREF A = IREF D α = VREF A = VREF D ...
... A=αD D is dimensionless α sets both the full scale and the dimension of A. Example: α = IREF A = IREF D α = VREF A = VREF D ...
RF5565 2.4GHz TO 2.5GHz, 802.11b/g/n WiFi FRONT END MODULE Features
... The LNA bias components consist of an inductor and a decoupling capacitor. The inductor value is critical to optimize NF and return loss at the RX output. For best performance and trade off between critical parameters such as NF, Gain, and IP3, the total inductance including board trace should be ap ...
... The LNA bias components consist of an inductor and a decoupling capacitor. The inductor value is critical to optimize NF and return loss at the RX output. For best performance and trade off between critical parameters such as NF, Gain, and IP3, the total inductance including board trace should be ap ...
Single-Phase to Three-Phase Drive System Using Two Parallel Single-Phase Rectifiers
... three-phase inverter, and an induction motor. The proposed topology permits to reduce the rectifier switch currents, the harmonic distortion at the input converter side, and presents improvements on the fault tolerance characteristics. Even with the increase in the number of switches, the total ener ...
... three-phase inverter, and an induction motor. The proposed topology permits to reduce the rectifier switch currents, the harmonic distortion at the input converter side, and presents improvements on the fault tolerance characteristics. Even with the increase in the number of switches, the total ener ...
MAX4906/MAX4606F/MAX4907/MAX4907F High-/Full-Speed USB 2.0 Switches General Description Features
... The MAX4906/MAX4906F/MAX4907/MAX4907F analog switches combine the low on-capacitance (CON) and low on-resistance (R ON ) necessary for high-performance switching applications. These devices are designed for USB 2.0 high-speed applications at 480Mbps. These switches will also handle all the requireme ...
... The MAX4906/MAX4906F/MAX4907/MAX4907F analog switches combine the low on-capacitance (CON) and low on-resistance (R ON ) necessary for high-performance switching applications. These devices are designed for USB 2.0 high-speed applications at 480Mbps. These switches will also handle all the requireme ...
Electronically Coupled Distributed Generation Modeling and Control
... maximum power point tracking and unity power factor dispatching. Modeling for photovoltaic array (the distributed generator) and three-phase grid-connected inverter produce the optimum control parameters. The inverter’s controller uses inner and outer control loops to control parameters. The inner c ...
... maximum power point tracking and unity power factor dispatching. Modeling for photovoltaic array (the distributed generator) and three-phase grid-connected inverter produce the optimum control parameters. The inverter’s controller uses inner and outer control loops to control parameters. The inner c ...
DNDO - All Slides For Public Release
... radiation strike. LET (Linear Energy Transfer) values quantify the extent of radiation strike. We studied LET values from 1 to 20, 1 being a weak strike and 20 being a strong strike. The graph below shows that we have a 14X difference between the magnitude of a LET1 and LET20 current. Due to this wi ...
... radiation strike. LET (Linear Energy Transfer) values quantify the extent of radiation strike. We studied LET values from 1 to 20, 1 being a weak strike and 20 being a strong strike. The graph below shows that we have a 14X difference between the magnitude of a LET1 and LET20 current. Due to this wi ...
RFVA1027 数据资料DataSheet下载
... amplifier featuring exceptional linearity over a greater than 19dB gain control range. This variable gain amplifier is controlled by a single 0V to 3.3V positive supply voltage. The RFVA1027 is packaged in a small 7mm x 7mm leadless laminate MCM which contains solid thermal vias for ultra low therma ...
... amplifier featuring exceptional linearity over a greater than 19dB gain control range. This variable gain amplifier is controlled by a single 0V to 3.3V positive supply voltage. The RFVA1027 is packaged in a small 7mm x 7mm leadless laminate MCM which contains solid thermal vias for ultra low therma ...
chapter v
... The analytical model developed in this work shows that the effective lifetime decreases with increase in current density and that the advantages of incorporating a universal contact decrease as the breakdown voltage of the diode increases. Due to the large middle region thickness in high voltage dio ...
... The analytical model developed in this work shows that the effective lifetime decreases with increase in current density and that the advantages of incorporating a universal contact decrease as the breakdown voltage of the diode increases. Due to the large middle region thickness in high voltage dio ...
Ultra-Thin, Small Footprint 1-W, 12- to 36
... As most of the analog PLC I/O modules are space constrained, the TIDA-00237 aims at keeping the transformer height below 5 mm and a small overall footprint. This has a major influence on the component selection, which is described in Table 2. As the transformer T1 has to be below 5-mm height, an ER9 ...
... As most of the analog PLC I/O modules are space constrained, the TIDA-00237 aims at keeping the transformer height below 5 mm and a small overall footprint. This has a major influence on the component selection, which is described in Table 2. As the transformer T1 has to be below 5-mm height, an ER9 ...
AN-636 APPLICATION NOTE
... REFCLKP accept any differential signal with a peak-to-peak differential voltage level of greater than 100 mV (for example, LVPECL or LVDS) or a single-ended LVTTL or LVCMOS input. The REFCLK inputs are high impedance. However, on the evaluation board, there is a 100 Ω resistor, R3, placed across REF ...
... REFCLKP accept any differential signal with a peak-to-peak differential voltage level of greater than 100 mV (for example, LVPECL or LVDS) or a single-ended LVTTL or LVCMOS input. The REFCLK inputs are high impedance. However, on the evaluation board, there is a 100 Ω resistor, R3, placed across REF ...
Wiener MPOD information (pdf)
... A fast an easy way to begin using SNMP is to use command line arguments. The command line arguments specified in this document are based on the netSNMP, an open source library for SNMP support. The command line syntax is the same for both windows and Linux (and probably MAC OSX). In order to perform ...
... A fast an easy way to begin using SNMP is to use command line arguments. The command line arguments specified in this document are based on the netSNMP, an open source library for SNMP support. The command line syntax is the same for both windows and Linux (and probably MAC OSX). In order to perform ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.