Distribution High Impedance Fault Location Using Localized Voltage
... fires due to arcing and flashing at the point of contact [1]. Such faults in distribution systems affect more residential and commercial areas and are the focus of this work. To avoid such dangerous situations, quick and accurate fault detection and location techniques must be employed. Previously, me ...
... fires due to arcing and flashing at the point of contact [1]. Such faults in distribution systems affect more residential and commercial areas and are the focus of this work. To avoid such dangerous situations, quick and accurate fault detection and location techniques must be employed. Previously, me ...
LTM8062 - 32VIN, 2A uModule Power Tracking Battery Charger
... just two external resistors, operating under a 1MHz fixed frequency, average current mode step-down architecture. A 2A power Schottky diode is integrated within the μModule charger for reverse input voltage protection. A wide input range allows the operation to full charge from an input voltage up t ...
... just two external resistors, operating under a 1MHz fixed frequency, average current mode step-down architecture. A 2A power Schottky diode is integrated within the μModule charger for reverse input voltage protection. A wide input range allows the operation to full charge from an input voltage up t ...
MAX17005B/MAX17006B/MAX17015B 1.2MHz, Low-Cost, High-Performance Chargers General Description
... that significantly reduces component size and cost. The charger uses a high-side MOSFET with n-channel synchronous rectifier. Widely adjustable charge current, charge voltage, and input current limit simplify the construction of highly accurate and efficient chargers. The charge voltage and charge c ...
... that significantly reduces component size and cost. The charger uses a high-side MOSFET with n-channel synchronous rectifier. Widely adjustable charge current, charge voltage, and input current limit simplify the construction of highly accurate and efficient chargers. The charge voltage and charge c ...
3. Switched Current Mirror Mixer
... from a very bad isolation between RF and LO. Another group of these circuits operates based on Gilbert mixer. Wan Chicheng proposed a parallel current driven mixer. However, the conversion gain is very low [4]. Eric A. M. Klumperink designed a switched transconductor mixer [5]. Unfortunately, the ou ...
... from a very bad isolation between RF and LO. Another group of these circuits operates based on Gilbert mixer. Wan Chicheng proposed a parallel current driven mixer. However, the conversion gain is very low [4]. Eric A. M. Klumperink designed a switched transconductor mixer [5]. Unfortunately, the ou ...
A Closed-Loop, Wideband, 100A Active Load
... allowing simulation of nearly any load profile. Feedback from Q1’s source to the A1 control amplifier closes a loop around Q1, stabilizing its operating point. Q1’s current assumes a value dependent on the instantaneous input control voltage and the current sense resistor over a very wide bandwidth. ...
... allowing simulation of nearly any load profile. Feedback from Q1’s source to the A1 control amplifier closes a loop around Q1, stabilizing its operating point. Q1’s current assumes a value dependent on the instantaneous input control voltage and the current sense resistor over a very wide bandwidth. ...
Calculating noise figure in op amps
... Noise figure is commonly used in communications systems because it provides a simple method to determine the impact of system noise on sensitivity. Today, the performance of wide-band op amps is making them viable alternatives to more traditional open-loop amplifiers like monolithic microwave integr ...
... Noise figure is commonly used in communications systems because it provides a simple method to determine the impact of system noise on sensitivity. Today, the performance of wide-band op amps is making them viable alternatives to more traditional open-loop amplifiers like monolithic microwave integr ...
Pressure Sensor/PS(ADP4), PF(ADP1)
... introduction port. Do not insert foreign substances, such as wires, into the port as those substances may damage the chip and close the port. Do not block the atmosphere introduction port. 4) Use electric power within the rated power range. Use beyond the range may damage the product. 5) Follow belo ...
... introduction port. Do not insert foreign substances, such as wires, into the port as those substances may damage the chip and close the port. Do not block the atmosphere introduction port. 4) Use electric power within the rated power range. Use beyond the range may damage the product. 5) Follow belo ...
APN5001: Theory and Application of Sampling Phase Detector
... 1. Digital phase lock: This is usually achieved by using a frequency divider to divide the higher frequency of the VCO to the same frequency of the crystal reference. A digital phase detector is then used to acquire the phase lock. The advantage of this method is that it is self-acquiring and can op ...
... 1. Digital phase lock: This is usually achieved by using a frequency divider to divide the higher frequency of the VCO to the same frequency of the crystal reference. A digital phase detector is then used to acquire the phase lock. The advantage of this method is that it is self-acquiring and can op ...
Load Transient
... • Assuming that the step down load transient occurs at tLT = DT (overshoot worst case), the instant of peak variation of the output voltage and its maximum overshoot peak value are ...
... • Assuming that the step down load transient occurs at tLT = DT (overshoot worst case), the instant of peak variation of the output voltage and its maximum overshoot peak value are ...
AP2BW8
... Group 3: In this group we have two capacitors in parallel and this combination is in series with the third capacitor. First determine the equivalent capacitance of the parallel combination and then consider this equivalent capacitance to be in series with the third capacitor. The equivalent parallel ...
... Group 3: In this group we have two capacitors in parallel and this combination is in series with the third capacitor. First determine the equivalent capacitance of the parallel combination and then consider this equivalent capacitance to be in series with the third capacitor. The equivalent parallel ...
Si9243AEY
... Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s technical experts. Product specifications do not ...
... Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s technical experts. Product specifications 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.