4 Electricity - Home Distribution
... POSSIBLE FAULTS: Overloading a circuit: In parallel circuits, the total current flowing in the circuit is the sum of the individual currents through the devices. Too many appliance operating on a single power circuit will produce a large current. The conducting wires get hot and melt their insul ...
... POSSIBLE FAULTS: Overloading a circuit: In parallel circuits, the total current flowing in the circuit is the sum of the individual currents through the devices. Too many appliance operating on a single power circuit will produce a large current. The conducting wires get hot and melt their insul ...
TTR 25 Handheld TTR
... operated transformer turns ratio test set. It is used to measure the turns ratio, excitation current and polarity of windings in single- and three-phase distribution and power transformers (tested phase by phase), potential & current transformers, and tapped transformers. The unique design of the TT ...
... operated transformer turns ratio test set. It is used to measure the turns ratio, excitation current and polarity of windings in single- and three-phase distribution and power transformers (tested phase by phase), potential & current transformers, and tapped transformers. The unique design of the TT ...
Electrical ground probing
... Pupils may be familiar with the principle of using geophysical methods to locate objects and structures buried below ground. Some TV archaeology programmes refer to this as “Geophys”. The electrical resistance of the ground is one property which can be used in this way. Set up the apparatus as shown ...
... Pupils may be familiar with the principle of using geophysical methods to locate objects and structures buried below ground. Some TV archaeology programmes refer to this as “Geophys”. The electrical resistance of the ground is one property which can be used in this way. Set up the apparatus as shown ...
Using the TL441 with the TL441 to Generate 4mA to 20mA Output
... any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI wa ...
... any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI wa ...
Enhancing Electric Power Quality Using Dual Unified Power
... references might be obtained through complex methods. The aim of this paper is to propose a simplified control technique for a dual three phase topology of a unified power quality conditioner (iUPQC) is to be used in the utility grid connection. The proposed control scheme is developed in ABC refere ...
... references might be obtained through complex methods. The aim of this paper is to propose a simplified control technique for a dual three phase topology of a unified power quality conditioner (iUPQC) is to be used in the utility grid connection. The proposed control scheme is developed in ABC refere ...
Review: To Investigate Impacts of Various Factors on the
... Overloading of line is a limiting factor to Transmit Power through a Transmission Line. It is caused due to change in Load & Faults taking place on line. As a result Voltage collapse take place & it is undesirable for Secure & Economic operation of line. Such problems can be mitigated by providing s ...
... Overloading of line is a limiting factor to Transmit Power through a Transmission Line. It is caused due to change in Load & Faults taking place on line. As a result Voltage collapse take place & it is undesirable for Secure & Economic operation of line. Such problems can be mitigated by providing s ...
Duality - Universal College of Engineering & Technology
... Place a node at the center of each mesh of the circuit. Place a reference node (ground) outside of the circuit. ...
... Place a node at the center of each mesh of the circuit. Place a reference node (ground) outside of the circuit. ...
RADIATION-HARD ASICS FOR OPTICAL DATA TRANSMISSION IN THE ATLAS PIXEL DETECTOR
... The ATLAS pixel detector [1] consists of two barrel layers and two forward and backward disks which provide at least two space point measurements. The pixel sensors are read out by front-end electronics controlled by the Module Control Chip (MCC). The low voltage differential signal (LVDS) from the ...
... The ATLAS pixel detector [1] consists of two barrel layers and two forward and backward disks which provide at least two space point measurements. The pixel sensors are read out by front-end electronics controlled by the Module Control Chip (MCC). The low voltage differential signal (LVDS) from the ...
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.