10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers General Description Features
... potentiometer, but replace the mechanics with a pinconfigurable 3-wire serial SPI™-compatible interface or up/down digital interface. The MAX5481/MAX5482 are 3-terminal voltage-dividers and the MAX5483/MAX5484 are 2-terminal variable resistors. The MAX5481–MAX5484 feature an internal, nonvolatile, e ...
... potentiometer, but replace the mechanics with a pinconfigurable 3-wire serial SPI™-compatible interface or up/down digital interface. The MAX5481/MAX5482 are 3-terminal voltage-dividers and the MAX5483/MAX5484 are 2-terminal variable resistors. The MAX5481–MAX5484 feature an internal, nonvolatile, e ...
Winding insulation and maintenance
... This can be done by homogeneously warming and drying the windings in the following way: 1 A crude method can be to set up two lamps at both ends of the stator housing after removing the end shields. This can be done in smaller motors, say, up to ‘355’ frame sizes. 2 By circulating roughly 50–60% of ...
... This can be done by homogeneously warming and drying the windings in the following way: 1 A crude method can be to set up two lamps at both ends of the stator housing after removing the end shields. This can be done in smaller motors, say, up to ‘355’ frame sizes. 2 By circulating roughly 50–60% of ...
Chapter 9 Sinusoids and Phasors
... The differences between v(t) and V: 1. V(t) is the instantaneous or time-domain representation, while V is the frequency or phasor-domain representation. ...
... The differences between v(t) and V: 1. V(t) is the instantaneous or time-domain representation, while V is the frequency or phasor-domain representation. ...
CONSTRUCTION AND MAINTENANCE OF HIGH VOLTAGE POWER TRANSFORMERS STAMATIOS VLACHOS
... A leakage transformer, also called a stray-field transformer, has a significantly higher leakage inductance than other transformers, sometimes increased by a magnetic bypass or shunt in its core between primary and secondary, which is sometimes adjustable with a set screw. This provides a transforme ...
... A leakage transformer, also called a stray-field transformer, has a significantly higher leakage inductance than other transformers, sometimes increased by a magnetic bypass or shunt in its core between primary and secondary, which is sometimes adjustable with a set screw. This provides a transforme ...
Technical Information
... Most transformer installations today are used to power circuits containing solid state devices sensitive to electrical noise, transients and voltage spikes. While the possibility of voltage spikes due to lighting strikes on nearby transmission lines exists, the more frequent threat to electronic e ...
... Most transformer installations today are used to power circuits containing solid state devices sensitive to electrical noise, transients and voltage spikes. While the possibility of voltage spikes due to lighting strikes on nearby transmission lines exists, the more frequent threat to electronic e ...
SiC MOSFET Isolated Gate Driver
... operate from 4.5 to 20V. A provision for an input filtering capacitor (C4) has been included if needed. Power is provided by isolated DC-DC converters; one for the positive bias and the other for negative bias. X2 and X3 are both from the Recom RP series of 1 watt unregulated isolated DC-DC conver ...
... operate from 4.5 to 20V. A provision for an input filtering capacitor (C4) has been included if needed. Power is provided by isolated DC-DC converters; one for the positive bias and the other for negative bias. X2 and X3 are both from the Recom RP series of 1 watt unregulated isolated DC-DC conver ...
MAX16927 Evaluation Kit Evaluates: MAX16927 General Description Features
... VGL, and VGH sections, the VCOMH and VCOML sections, and the Over Temperature and Fault Condition displays. +3.3V (EN3) enables or disables the +3.3V buck converter. Input Pwr (ENP) enables or disables all the outputs on the EV kit, except for the buck-converter output. Power Sequencing (EN2, EN1) s ...
... VGL, and VGH sections, the VCOMH and VCOML sections, and the Over Temperature and Fault Condition displays. +3.3V (EN3) enables or disables the +3.3V buck converter. Input Pwr (ENP) enables or disables all the outputs on the EV kit, except for the buck-converter output. Power Sequencing (EN2, EN1) s ...
APT 2.4kV-15kV Automatic Transfer Switchgear (MV ATS)
... Verify correct secondary voltage by energizing the primary winding with system voltage. Measure secondary voltage with the secondary wiring disconnected. ...
... Verify correct secondary voltage by energizing the primary winding with system voltage. Measure secondary voltage with the secondary wiring disconnected. ...
MAX4919B/MAX4920B/MAX4921B Battery Power-Up Logic with Overvoltage and Overcurrent Protection General Description
... P2 turns off when PWR_HOLD and PWR_ON are low, and when the HP_PWR and ACOK internal one-shot timers have expired. When a voltage at IN is not present, HP_PWR controls the turn-on of P2. Upon a low-to-high transition at HP_PWR (and HP_PWR remaining high), the MAX4919B/MAX4920B/MAX4921B issue an inte ...
... P2 turns off when PWR_HOLD and PWR_ON are low, and when the HP_PWR and ACOK internal one-shot timers have expired. When a voltage at IN is not present, HP_PWR controls the turn-on of P2. Upon a low-to-high transition at HP_PWR (and HP_PWR remaining high), the MAX4919B/MAX4920B/MAX4921B issue an inte ...
AT-AO-6/10 User Manual Expansion Board for the PC AT/EISA
... repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts and labor. The media on which you receive National Instruments software are warranted not to fail to execute programming instructions, due to defects in materials and workmanship, for a p ...
... repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts and labor. The media on which you receive National Instruments software are warranted not to fail to execute programming instructions, due to defects in materials and workmanship, for a p ...
DS1123L 3.3V, 8-Bit, Programmable Timing Element General Description Features
... When LE is set at a high logic level, it enables the register and CLK clocks the data, D, into the register one bit at a time starting with the most significant bit. After all 8 bits are shifted into the DS1123L, LE is pulled low to end the data transfer and activate the new value. A settling time ( ...
... When LE is set at a high logic level, it enables the register and CLK clocks the data, D, into the register one bit at a time starting with the most significant bit. After all 8 bits are shifted into the DS1123L, LE is pulled low to end the data transfer and activate the new value. A settling time ( ...
Rail-to-Rail Op Amp Design ( cont`d )
... We have to push gm2 to 2 times of its original value in previous case! It means more power, and may reach near the limitation of the process, that is we can only design an amplifier with 50% of the GBW that a specific process permits. Of course, we do not want either of these two! • So, transconduct ...
... We have to push gm2 to 2 times of its original value in previous case! It means more power, and may reach near the limitation of the process, that is we can only design an amplifier with 50% of the GBW that a specific process permits. Of course, we do not want either of these two! • So, transconduct ...
the inequality of circuit breaker standards - CBI
... circuit breakers for equipment protection can justify a separate product standard, provided that through physical differences in their size and mounting arrangements, it is highly unlikely that such devices could inadvertently be used for protection of the fixed installation. In the United States, t ...
... circuit breakers for equipment protection can justify a separate product standard, provided that through physical differences in their size and mounting arrangements, it is highly unlikely that such devices could inadvertently be used for protection of the fixed installation. In the United States, t ...
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.