SMARTHOME™ 1-800-SMART-HOME 949-221
... Carefully read the installation instructions before external influences on the power grid. TheLeviton Commercial Grade Surge Suppressor Receptacles are in- beginning your intended installation. IF YOU DO NOT tended for use with sensitive electronic equipment, such UNDERSTAND ANY PART OF THEM, CONSUL ...
... Carefully read the installation instructions before external influences on the power grid. TheLeviton Commercial Grade Surge Suppressor Receptacles are in- beginning your intended installation. IF YOU DO NOT tended for use with sensitive electronic equipment, such UNDERSTAND ANY PART OF THEM, CONSUL ...
Guidance on the management of safe procedures for
... electrical safe systems of work. The access doors should be locked when electrical operatives are not working in these areas and danger notices warning of any live services present posted at all times. Plant and materials should not be stored in locked electrical switch-rooms or electrical risers. I ...
... electrical safe systems of work. The access doors should be locked when electrical operatives are not working in these areas and danger notices warning of any live services present posted at all times. Plant and materials should not be stored in locked electrical switch-rooms or electrical risers. I ...
Designing 4 to 20 mA Current Loops
... current from the system power supply than the 20 mA signaling current because the transmitter itself requires some current to operate. In the loop schematic above, a BAPI-Stat room sensor is meauring the temperature of a room. The BAPIStat itself requires 10 mA of current to operate. Therefore when ...
... current from the system power supply than the 20 mA signaling current because the transmitter itself requires some current to operate. In the loop schematic above, a BAPI-Stat room sensor is meauring the temperature of a room. The BAPIStat itself requires 10 mA of current to operate. Therefore when ...
Electronics manufacture-ESD control
... In ESD work, a different definition of ‘time constant’ is usually used in standard measurements, and the time for charge to reduce to one-tenth of its initial value is measured. This value is theoretically equal to 2.3τ. Any material that has a time constant greater than about 2s is considered an in ...
... In ESD work, a different definition of ‘time constant’ is usually used in standard measurements, and the time for charge to reduce to one-tenth of its initial value is measured. This value is theoretically equal to 2.3τ. Any material that has a time constant greater than about 2s is considered an in ...
Graphical User Interface for Numerical Protection Relay
... a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits as amplifiers: they repeated the signal coming in from one circuit and re-transm ...
... a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits as amplifiers: they repeated the signal coming in from one circuit and re-transm ...
PSS15S92F6-AG
... and turn-off threshold voltage. Fo output is open drain type. It should be pulled up to MCU or control power supply (e.g. 5V,15V) by a resistor that makes IFo up to 1mA. (IFO is estimated roughly by the formula of control power supply voltage divided by pull-up resistance. In the case of pulled up t ...
... and turn-off threshold voltage. Fo output is open drain type. It should be pulled up to MCU or control power supply (e.g. 5V,15V) by a resistor that makes IFo up to 1mA. (IFO is estimated roughly by the formula of control power supply voltage divided by pull-up resistance. In the case of pulled up t ...
LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual
... The differential input voltage may be larger than V a without damaging the device (see Note 8). Protection should be provided to prevent the input voltages from going negative more than b0.3 VDC (at 25§ C). An input clamp diode can be used as shown in the applications section. The output of the LM19 ...
... The differential input voltage may be larger than V a without damaging the device (see Note 8). Protection should be provided to prevent the input voltages from going negative more than b0.3 VDC (at 25§ C). An input clamp diode can be used as shown in the applications section. The output of the LM19 ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Reactor loading is required only at times of low real power on long EHV lines to combat Ferranti effect. Other wise continuous loading requirement could mean installation of more expensive transformers. Figure (1) is an illustration of reactor loading of a main transformer. The adoption of earth fre ...
... Reactor loading is required only at times of low real power on long EHV lines to combat Ferranti effect. Other wise continuous loading requirement could mean installation of more expensive transformers. Figure (1) is an illustration of reactor loading of a main transformer. The adoption of earth fre ...
DN495 - Simple Energy-Tripped Circuit Breaker with Automatic Delayed Retry
... A circuit breaker protects sensitive load circuits from excessive current flow by opening the power supply when the current reaches a predetermined level. The simplest circuit breaker is a fuse, but blown fuses require physical replacement. An electronic circuit breaker provides the same measure of ...
... A circuit breaker protects sensitive load circuits from excessive current flow by opening the power supply when the current reaches a predetermined level. The simplest circuit breaker is a fuse, but blown fuses require physical replacement. An electronic circuit breaker provides the same measure of ...
JB Operators Manual
... Ensure that optical connector dust caps are in place whenever the equipment is powered or connectors are not plugged in to a closed system. ...
... Ensure that optical connector dust caps are in place whenever the equipment is powered or connectors are not plugged in to a closed system. ...
DS1813 - Maxim Integrated
... processor-based system of impending power failure. When VCC is detected as out-of-tolerance, the RST signal is asserted. On power-up, RST is kept active for approximately 150ms after the power supply has reached the selected tolerance. This allows the power supply and microprocessor to stabilize bef ...
... processor-based system of impending power failure. When VCC is detected as out-of-tolerance, the RST signal is asserted. On power-up, RST is kept active for approximately 150ms after the power supply has reached the selected tolerance. This allows the power supply and microprocessor to stabilize bef ...
review of ground fault protection methods for
... primarily sized to carry load, is yet another limiting factor for ground protection sensitivity in these systems [10]. As a result, many downed conductors have remained undetected and energized for a significant time. Recent directional relay developments take into account the normal load and line u ...
... primarily sized to carry load, is yet another limiting factor for ground protection sensitivity in these systems [10]. As a result, many downed conductors have remained undetected and energized for a significant time. Recent directional relay developments take into account the normal load and line u ...
High Voltage Nanosecond Pulse Measurement Techniques
... picofarads (pF) of stray capacitance. In many cases, the user’s load may be a dielectric barrier discharge with a capacitance of just several pF, and in such cases the stray capacitance may not only throw off the measurement but dominate the behavior of the system overall. Therefore, it is important ...
... picofarads (pF) of stray capacitance. In many cases, the user’s load may be a dielectric barrier discharge with a capacitance of just several pF, and in such cases the stray capacitance may not only throw off the measurement but dominate the behavior of the system overall. Therefore, it is important ...
Ground (electricity)
In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.Electrical circuits may be connected to ground (earth) for several reasons. In mains powered equipment, exposed metal parts are connected to ground to prevent user contact with dangerous voltage if electrical insulation fails. Connections to ground limit the build-up of static electricity when handling flammable products or electrostatic-sensitive devices. In some telegraph and power transmission circuits, the earth itself can be used as one conductor of the circuit, saving the cost of installing a separate return conductor (see single-wire earth return).For measurement purposes, the Earth serves as a (reasonably) constant potential reference against which other potentials can be measured. An electrical ground system should have an appropriate current-carrying capability to serve as an adequate zero-voltage reference level. In electronic circuit theory, a ""ground"" is usually idealized as an infinite source or sink for charge, which can absorb an unlimited amount of current without changing its potential. Where a real ground connection has a significant resistance, the approximation of zero potential is no longer valid. Stray voltages or earth potential rise effects will occur, which may create noise in signals or if large enough will produce an electric shock hazard.The use of the term ground (or earth) is so common in electrical and electronics applications that circuits in portable electronic devices such as cell phones and media players as well as circuits in vehicles may be spoken of as having a ""ground"" connection without any actual connection to the Earth, despite ""common"" being a more appropriate term for such a connection. This is usually a large conductor attached to one side of the power supply (such as the ""ground plane"" on a printed circuit board) which serves as the common return path for current from many different components in the circuit.