novel current line sensor based on matched optocouplers for active
... hindering THD measurements. Also, having a current sensor with galvanic separation is essential for safe measurements. Both the wide frequency range and galvanic separation are provided by the line current sensor based on optocouplers proposed in Fig.2. Its main idea is to reduce/minimize the 2nd or ...
... hindering THD measurements. Also, having a current sensor with galvanic separation is essential for safe measurements. Both the wide frequency range and galvanic separation are provided by the line current sensor based on optocouplers proposed in Fig.2. Its main idea is to reduce/minimize the 2nd or ...
Sensors
... Potentiometric : These involve the measurement of the emf (potential) of a cell at zero current. The emf is proportional to the logarithm of the concentration of the substance being determined. Amperometric : An increasing (decreasing) potential is applied to the cell until oxidation (reduction) of ...
... Potentiometric : These involve the measurement of the emf (potential) of a cell at zero current. The emf is proportional to the logarithm of the concentration of the substance being determined. Amperometric : An increasing (decreasing) potential is applied to the cell until oxidation (reduction) of ...
in Microsoft Word
... voltage reference used to set the voltage input range of the ADC. He has told you that he thinks the voltage reference circuit is very low noise which will only result in the loss of 15 LSBs of resolution at most. You have looked at the voltage reference characteristics and you think your coworker i ...
... voltage reference used to set the voltage input range of the ADC. He has told you that he thinks the voltage reference circuit is very low noise which will only result in the loss of 15 LSBs of resolution at most. You have looked at the voltage reference characteristics and you think your coworker i ...
HMC723LC3C 数据资料DataSheet下载
... General Description The HMC723LC3C is a D-type Flip Flop designed to support data transmission rates of up to 13 Gbps, and clock frequencies as high as 13 GHz. During normal operation, data is transferred to the outputs on the positive edge of the clock. Reversing the clock inputs allows for negativ ...
... General Description The HMC723LC3C is a D-type Flip Flop designed to support data transmission rates of up to 13 Gbps, and clock frequencies as high as 13 GHz. During normal operation, data is transferred to the outputs on the positive edge of the clock. Reversing the clock inputs allows for negativ ...
R280-90-2
... Satisfactory operation will generally be achieved if these conditions are met. Table 2 was developed to show the voltage kVA, and series resistance required to test reclosers with reasonable accuracy. Test equipment having lower ratings can be used, but the effects of decreasing current and incomple ...
... Satisfactory operation will generally be achieved if these conditions are met. Table 2 was developed to show the voltage kVA, and series resistance required to test reclosers with reasonable accuracy. Test equipment having lower ratings can be used, but the effects of decreasing current and incomple ...
Exam-Prep Jepperdee
... sigs. with frequencies between LUF and MUF when they go into the ionosphere? G3B05 ...
... sigs. with frequencies between LUF and MUF when they go into the ionosphere? G3B05 ...
power and voltage rating
... Three voltage rating terms will be discussed: Breakdown Voltage Dielectric Withstanding Voltage Working Voltage Note: A brief discussion of voltage pulses will be included at the end of this section. BREAKDOWN VOLTAGE Breakdown Voltage tests slowly raise the voltage applied to the Device under Test ...
... Three voltage rating terms will be discussed: Breakdown Voltage Dielectric Withstanding Voltage Working Voltage Note: A brief discussion of voltage pulses will be included at the end of this section. BREAKDOWN VOLTAGE Breakdown Voltage tests slowly raise the voltage applied to the Device under Test ...
MTP40N10E Power MOSFET 40 Amps, 100 Volts
... be charged by current from the generator. The published capacitance data is difficult to use for calculating rise and fall because drain−gate capacitance varies greatly with applied voltage. Accordingly, gate charge data is used. In most cases, a satisfactory estimate of average input current (IG(AV ...
... be charged by current from the generator. The published capacitance data is difficult to use for calculating rise and fall because drain−gate capacitance varies greatly with applied voltage. Accordingly, gate charge data is used. In most cases, a satisfactory estimate of average input current (IG(AV ...
HAWKEYE 720 Installation Instructions
... Installation Instructions INSTALLATION !CAUTION ! • This product is not intended for life or safety applications • Installing sensors in an energized motor control center or on any energized conductor can be hazardous. Severe injury or death can result from electrical shock during contact with high ...
... Installation Instructions INSTALLATION !CAUTION ! • This product is not intended for life or safety applications • Installing sensors in an energized motor control center or on any energized conductor can be hazardous. Severe injury or death can result from electrical shock during contact with high ...
FNB40560 Motion SPM 45 Series FNB40560 Motio
... Figure 13. Short-Circuit Protection (Low-Side Operation Only) ...
... Figure 13. Short-Circuit Protection (Low-Side Operation Only) ...
MAX8678 White LED Charge Pump with 1.1W Audio Amplifier General Description
... The MAX8678 integrates a charge pump for white lightemitting diodes (LEDs) with an audio loudspeaker amplifier. The high-efficiency, adaptive charge pump drives up to four LEDs with constant current for uniform brightness. The LED current is adjustable from 0.1mA/LED to 24mA/LED in 31 pseudo-logarit ...
... The MAX8678 integrates a charge pump for white lightemitting diodes (LEDs) with an audio loudspeaker amplifier. The high-efficiency, adaptive charge pump drives up to four LEDs with constant current for uniform brightness. The LED current is adjustable from 0.1mA/LED to 24mA/LED in 31 pseudo-logarit ...
CORE Lighting Controls Brochure - Dual Sensor Switch
... • Walk-in-Delay feature allows sensor to turn lights off without time delay when motion is detected briefly in room • Reverse Mode allows light to stay off in a room when motion is detected • Electrostatic discharge protection. • No leakage to load in off mode • Vacancy Sensor meets California 2008 ...
... • Walk-in-Delay feature allows sensor to turn lights off without time delay when motion is detected briefly in room • Reverse Mode allows light to stay off in a room when motion is detected • Electrostatic discharge protection. • No leakage to load in off mode • Vacancy Sensor meets California 2008 ...
15-A, 48-V INPUT, 5-V OUTPUT, ISOLATED, 1/8th BRICK DC/DC
... 1. The Remote On/Off control uses –VI (pin 3) as its ground reference. All voltages are with respect to –VI. 2. An open-collector device (preferably a discrete transistor) is recommended. A pull-up resistor is not required. If one is added the pull-up voltage should not exceed 20 V. Caution: Do not ...
... 1. The Remote On/Off control uses –VI (pin 3) as its ground reference. All voltages are with respect to –VI. 2. An open-collector device (preferably a discrete transistor) is recommended. A pull-up resistor is not required. If one is added the pull-up voltage should not exceed 20 V. Caution: Do not ...
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.