26 50 20 Ballasts - ET Boggess, Architect
... Ballasts shall be designed and UL listed for the electrical characteristics of the circuits to which they are connected and for use with the lamps and luminaires specified herein or indicated on the Drawings. ...
... Ballasts shall be designed and UL listed for the electrical characteristics of the circuits to which they are connected and for use with the lamps and luminaires specified herein or indicated on the Drawings. ...
LTC2640 - Single 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C
... device during momentary overload conditions. Junction temperature can exceed the rated maximum during current limiting. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 7: Digital inputs at 0V or VCC. Note 8: Guaranteed by design and ...
... device during momentary overload conditions. Junction temperature can exceed the rated maximum during current limiting. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 7: Digital inputs at 0V or VCC. Note 8: Guaranteed by design and ...
Stick welding
... DC output has usually polarity switches with both positive and negative terminals. DC current output for SMAW may use single-phase or 3-phase primary electrical power. The most stable DC welding is provided by welding machines that provide 3-phase transformers and full-wave rectifiers. ...
... DC output has usually polarity switches with both positive and negative terminals. DC current output for SMAW may use single-phase or 3-phase primary electrical power. The most stable DC welding is provided by welding machines that provide 3-phase transformers and full-wave rectifiers. ...
Design of Power-Rail ESD Clamp Circuit with Adjustable Holding
... the ESD clamp nMOS transistor is turned on by the ESDtransient detection circuit with positive feedback mechanism. In Fig. 4(b), the voltage at node A of the new proposed powerrail ESD clamp circuit can be obviously elevated to the voltage level at VDD. However, the voltage at node A in the RC-based ...
... the ESD clamp nMOS transistor is turned on by the ESDtransient detection circuit with positive feedback mechanism. In Fig. 4(b), the voltage at node A of the new proposed powerrail ESD clamp circuit can be obviously elevated to the voltage level at VDD. However, the voltage at node A in the RC-based ...
A Class-E Inductive Powering Link with Backward Data
... The design and implementation of a wireless power and data transfer system based on inductive coupling, having the potential to be used in numerous implantable bio-medical sensors and systems, is presented. The system consists of an external (primary) unit and an internal (secondary) unit. The exter ...
... The design and implementation of a wireless power and data transfer system based on inductive coupling, having the potential to be used in numerous implantable bio-medical sensors and systems, is presented. The system consists of an external (primary) unit and an internal (secondary) unit. The exter ...
- EasyEDA
... Mode Register, Watchdog Timer and Alarm As this is supposed to replace an industrial control unit reliability is very important. Software errors and crashes on the Rpi must be dealt with to bring it back to a known state. In micro-controller circuits we use a watchdog timer which we reset during nor ...
... Mode Register, Watchdog Timer and Alarm As this is supposed to replace an industrial control unit reliability is very important. Software errors and crashes on the Rpi must be dealt with to bring it back to a known state. In micro-controller circuits we use a watchdog timer which we reset during nor ...
Collecting and Restoring Valve Radios
... service information for many sets produced in the year of publication. These are often available at swapmeets and fairs for a few pounds each, and may still be available at your local library. If you cannot find the exact data for your set, look for data on similar models from the same manufacturer. ...
... service information for many sets produced in the year of publication. These are often available at swapmeets and fairs for a few pounds each, and may still be available at your local library. If you cannot find the exact data for your set, look for data on similar models from the same manufacturer. ...
MAX2034 Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance General Description
... The MAX2034 is a four-channel, ultra-low-noise preamplifier. Each amplifier features single-ended inputs, differential outputs, and provides an accurate fixed gain of 19dB with a wide -3dB bandwidth of 70MHz. The highgain accuracy of the amplifier allows for exceptional channel-to-channel gain match ...
... The MAX2034 is a four-channel, ultra-low-noise preamplifier. Each amplifier features single-ended inputs, differential outputs, and provides an accurate fixed gain of 19dB with a wide -3dB bandwidth of 70MHz. The highgain accuracy of the amplifier allows for exceptional channel-to-channel gain match ...
User and Installation Manual
... power leads. It is recommended that this shielding be done with a highly permeable material, such as braided steel. Most of the emissions are electromagnetic in nature, caused by the high currents required by these drives. When shielding the high power conductors, do not wrap the sensor wires for th ...
... power leads. It is recommended that this shielding be done with a highly permeable material, such as braided steel. Most of the emissions are electromagnetic in nature, caused by the high currents required by these drives. When shielding the high power conductors, do not wrap the sensor wires for th ...
Unit 1 - Mahalakshmi Engineering College
... A Square-law modulator requires three features: a means of summing the carrier and modulating waves, a nonlinear element, and a band pass filter for extracting the desired modulation products. Semi-conductor diodes and transistors are the most common nonlinear devices used for implementing square la ...
... A Square-law modulator requires three features: a means of summing the carrier and modulating waves, a nonlinear element, and a band pass filter for extracting the desired modulation products. Semi-conductor diodes and transistors are the most common nonlinear devices used for implementing square la ...
MAX544X Evaluation Kit Evaluates: MAX5441–MAX5444 General Description Features
... the MAX5441–MAX5444 serial-input, voltage-output, 16-bit DACs. The DACs are controlled by an on-board MAXQ microcontroller that provides two separate SPI control interfaces. The EV kit provides on-board +2.5V and +4.096V highprecision voltage references. Use jumper JU2 to select from the different r ...
... the MAX5441–MAX5444 serial-input, voltage-output, 16-bit DACs. The DACs are controlled by an on-board MAXQ microcontroller that provides two separate SPI control interfaces. The EV kit provides on-board +2.5V and +4.096V highprecision voltage references. Use jumper JU2 to select from the different r ...
MC33800, Engine Control Integrated Circuit
... The CCD2_REC pin is connected to the node between the internal sense resistor and power MOSFET driver. The device uses the differential voltage between CCD2_REC and CCD2_OUT to determine the load solenoid current. ...
... The CCD2_REC pin is connected to the node between the internal sense resistor and power MOSFET driver. The device uses the differential voltage between CCD2_REC and CCD2_OUT to determine the load solenoid current. ...
MAX1005 IF Undersampler _______________General Description ____________________________Features
... +5.5V. The MAX1005 can operate with an unregulated analog supply of 5.5V and a regulated digital supply down to 2.7V. This flexible power-supply operation saves additional power in complex digital systems. The MAX1005 has three operating modes: transmit (DAC active), receive (ADC active), and shutdo ...
... +5.5V. The MAX1005 can operate with an unregulated analog supply of 5.5V and a regulated digital supply down to 2.7V. This flexible power-supply operation saves additional power in complex digital systems. The MAX1005 has three operating modes: transmit (DAC active), receive (ADC active), and shutdo ...
AD5259 数据手册DataSheet下载
... and EEPROM content. Resistor tolerance is also stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%. A separate VLOGIC pin delivers increased interface flexibility. For users who need multiple parts on one bus, Address Bit AD0 and Address Bit AD1 allow up to four devices on the s ...
... and EEPROM content. Resistor tolerance is also stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%. A separate VLOGIC pin delivers increased interface flexibility. For users who need multiple parts on one bus, Address Bit AD0 and Address Bit AD1 allow up to four devices on the s ...
Technical Overview - home.hs
... transient input voltages required to induce either ±40mA or ±80mA are relatively large, and far greater than the transients induced in 5V systems where 2V or 3V of ringing transients can be induced via wiring inductance effects. This ±40mA QMOS capability is truly a “latch-up free” condition for ope ...
... transient input voltages required to induce either ±40mA or ±80mA are relatively large, and far greater than the transients induced in 5V systems where 2V or 3V of ringing transients can be induced via wiring inductance effects. This ±40mA QMOS capability is truly a “latch-up free” condition for ope ...
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.