MT-095: EMI, RFI, and Shielding Concepts
... EMI energy may enter wherever there is an impedance mismatch or discontinuity in a system. In general this occurs at the interface where cables carrying sensitive analog signals are connected to PC boards, and through power supply leads. Improperly connected cables or poor supply filtering schemes a ...
... EMI energy may enter wherever there is an impedance mismatch or discontinuity in a system. In general this occurs at the interface where cables carrying sensitive analog signals are connected to PC boards, and through power supply leads. Improperly connected cables or poor supply filtering schemes a ...
MEDIUM-VOLTAGE SWITCHGEAR
... closed, ready to close indicators which shall be visible to the operator with compartment door closed. It shall be able to rack the breaker with the compartment door closed. C. Interlocks shall be provided to prevent the breaker racking when the breaker is closed. D. Breaker Type: The switchgear sha ...
... closed, ready to close indicators which shall be visible to the operator with compartment door closed. It shall be able to rack the breaker with the compartment door closed. C. Interlocks shall be provided to prevent the breaker racking when the breaker is closed. D. Breaker Type: The switchgear sha ...
HMC365S8G 数据资料DataSheet下载
... use RF circuit design techniques. Signal lines should have 50 ohm impedance while the package ground leads and backside ground slug should be connected directly to the ground plane similar to that shown. A sufficient number of via holes should be used to connect the top and bottom ground planes. The ...
... use RF circuit design techniques. Signal lines should have 50 ohm impedance while the package ground leads and backside ground slug should be connected directly to the ground plane similar to that shown. A sufficient number of via holes should be used to connect the top and bottom ground planes. The ...
LP3997 Micropower 250mA CMOS LDO Regulator with Error Flag
... An input capacitor is required for stability. It is recommended that a minimum of 1.0µF capacitor is connected between the LP3997 input pin and ground (this capacitance value may be increased without limit). This capacitor must be located a distance of not more than 1cm from the input pin and return ...
... An input capacitor is required for stability. It is recommended that a minimum of 1.0µF capacitor is connected between the LP3997 input pin and ground (this capacitance value may be increased without limit). This capacitor must be located a distance of not more than 1cm from the input pin and return ...
Automatic voltage regulator AVR6-V2, AVR6-V3
... The resistance of the inductors must range between 5 Ω and 50 Ω. Normally, the voltage detection is single-phase; adding the module AVR3-6 it becomes threephase detection; this module hinders the parallel operation of the machines by means of current transformer; it doesn’t hinder parallel operation ...
... The resistance of the inductors must range between 5 Ω and 50 Ω. Normally, the voltage detection is single-phase; adding the module AVR3-6 it becomes threephase detection; this module hinders the parallel operation of the machines by means of current transformer; it doesn’t hinder parallel operation ...
MAX845 Isolated Transformer Driver for PCMCIA Applications _______________General Description
... not critical and can be very small, since it only needs to supply current to the MAX845 during the break-beforemake interval. The transformer could be any of the same ones used for 5V operation, but for optimum performance it should have fewer primary turns, as the ET product required is now only 3. ...
... not critical and can be very small, since it only needs to supply current to the MAX845 during the break-beforemake interval. The transformer could be any of the same ones used for 5V operation, but for optimum performance it should have fewer primary turns, as the ET product required is now only 3. ...
Eletronica de Potencia V18 - N4.indd
... P. O. Box 5119, Zip Code: 88040-970 – Florianopolis, SC – Brazil [email protected] Abstract – This work proposes a 12 kW three-phase grid-connected single stage PWM DC-AC converter destined to process the energy provided by a photovoltaic array composed of 57 KC200GT PV modules with high power fa ...
... P. O. Box 5119, Zip Code: 88040-970 – Florianopolis, SC – Brazil [email protected] Abstract – This work proposes a 12 kW three-phase grid-connected single stage PWM DC-AC converter destined to process the energy provided by a photovoltaic array composed of 57 KC200GT PV modules with high power fa ...
Inventor - Hobbielektronika
... A general object of the present invention is to provide a snubber circuit which can provide two levels of current flow respectively well suited to control ringing and turn on. SUMMARY OF THE INVENTION In fulfillment of the foregoing object and in accordance with the present invention, a snubber circ ...
... A general object of the present invention is to provide a snubber circuit which can provide two levels of current flow respectively well suited to control ringing and turn on. SUMMARY OF THE INVENTION In fulfillment of the foregoing object and in accordance with the present invention, a snubber circ ...
Cable Heating Effects due to Harmonic Distortion in
... Most commercial and industrial establishments tend to employ balanced three-phase four-wire distribution systems with a reduced size neutral conductor. However, with the proliferation of non-linear loads in this type of electrical design, the triplen (multiples of 3rd order harmonics) harmonic curre ...
... Most commercial and industrial establishments tend to employ balanced three-phase four-wire distribution systems with a reduced size neutral conductor. However, with the proliferation of non-linear loads in this type of electrical design, the triplen (multiples of 3rd order harmonics) harmonic curre ...
© This item is protected by original copyright
... Figure 1.1: (a) Real MSCDN (b) Real filter reactors (c) Simplified single line of MSCDN (Kampa, 2012). ...
... Figure 1.1: (a) Real MSCDN (b) Real filter reactors (c) Simplified single line of MSCDN (Kampa, 2012). ...
Power Supply Restoration
... reverse voltage protection. It also provides steady-state overvoltage protection, however in so doing it normally fails shorted - protecting the load, but requiring replacement thereafter. I have had requests to include an SCR over-voltage crowbar to perform the steady-state protection. This techniq ...
... reverse voltage protection. It also provides steady-state overvoltage protection, however in so doing it normally fails shorted - protecting the load, but requiring replacement thereafter. I have had requests to include an SCR over-voltage crowbar to perform the steady-state protection. This techniq ...
GI Part 40. Safety-Related Work Practices Compared With – Electrical
... R 408.14004 Working on or near exposed de-energized parts. Rule 4004. (1) This rule applies to work on exposed de-energized parts and to work that is near enough to exposed de-energized parts to expose an employee to any electrical hazard the parts present. Conductors and parts of electric equipment ...
... R 408.14004 Working on or near exposed de-energized parts. Rule 4004. (1) This rule applies to work on exposed de-energized parts and to work that is near enough to exposed de-energized parts to expose an employee to any electrical hazard the parts present. Conductors and parts of electric equipment ...
BD6964FVM
... ground will not cause the IC and the system to malfunction by examining carefully all relevant factors and conditions such as motor characteristics, supply voltage, operating frequency and PCB wiring to name a few. ...
... ground will not cause the IC and the system to malfunction by examining carefully all relevant factors and conditions such as motor characteristics, supply voltage, operating frequency and PCB wiring to name a few. ...
Buying a Surge Protector
... • Response time — This rating indicates how fast a surge protector can react. The faster the better. • Indicator light — This indicator lets you know the unit is protecting. Once the unit has reached its capacity and is no longer protecting, the light will go out. • Power shut down protection — Th ...
... • Response time — This rating indicates how fast a surge protector can react. The faster the better. • Indicator light — This indicator lets you know the unit is protecting. Once the unit has reached its capacity and is no longer protecting, the light will go out. • Power shut down protection — Th ...
P84589
... restrictions on wiring and/or locating Notification Appliance Circuits (NAC) and notification appliances. Some system communication circuits and/or audio circuits, for example, may require special precautions to assure electrical noise immunity (e.g. audio crosstalk). NOTE: This equipment has been t ...
... restrictions on wiring and/or locating Notification Appliance Circuits (NAC) and notification appliances. Some system communication circuits and/or audio circuits, for example, may require special precautions to assure electrical noise immunity (e.g. audio crosstalk). NOTE: This equipment has been t ...
Continuous Workstation Monitor, Programmable, USA
... • Dual Wire Continuous Monitors provide redundancy; even if one wrist strap conductor is severed, operator has reliable path-to-ground with other wire. ...
... • Dual Wire Continuous Monitors provide redundancy; even if one wrist strap conductor is severed, operator has reliable path-to-ground with other wire. ...
User’s Manual 701931 Current Probe
... To avoid short circuits or accidents that could result in injury or death, ensure that the measuring instrument used is equipped with protective grounding. Connection with Power Supply and Protective Grounding Connect the power supply to the probe power supply terminal on the DL, or use the Power Su ...
... To avoid short circuits or accidents that could result in injury or death, ensure that the measuring instrument used is equipped with protective grounding. Connection with Power Supply and Protective Grounding Connect the power supply to the probe power supply terminal on the DL, or use the Power Su ...
PDF Two Hand Relay BG5933, BH5933
... Notes If both buttons are pressed while switching on the operating voltage (e.g. after voltage failure) the output contacts do not energize. The terminal S22 also serves as reference point for checking the control voltage. On BG 5933 there is only one terminal S12 and S22. Set-up instructions The de ...
... Notes If both buttons are pressed while switching on the operating voltage (e.g. after voltage failure) the output contacts do not energize. The terminal S22 also serves as reference point for checking the control voltage. On BG 5933 there is only one terminal S12 and S22. Set-up instructions The de ...
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.