profibus pa - PROFIBUS Competence Centre
... supplying sufficient power to multiple field devices through the same cable. Non-IS fieldbus segments, which have no power restrictions, can connect to far more devices - up to 31 devices to a single segment. Limiting the number of devices per segment due to IS power constraints means IS installatio ...
... supplying sufficient power to multiple field devices through the same cable. Non-IS fieldbus segments, which have no power restrictions, can connect to far more devices - up to 31 devices to a single segment. Limiting the number of devices per segment due to IS power constraints means IS installatio ...
Circuits make electric current useful.
... circuit that converts energy from one form to another. In a toaster, electrical energy is converted into heat. Voltage is supplied to the toaster by plugging it into a wall outlet, which completes the circuit from a power plant. The outlet is wired in parallel with other outlets, so the appliance wi ...
... circuit that converts energy from one form to another. In a toaster, electrical energy is converted into heat. Voltage is supplied to the toaster by plugging it into a wall outlet, which completes the circuit from a power plant. The outlet is wired in parallel with other outlets, so the appliance wi ...
Bipolar Transistor 10V 3A VCE(sat);0.4V max. NPN Single PCP
... system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for new ...
... system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for new ...
in and out of phase
... "quack" or "cluck" tone. The drawings in the "Parallel and Series" document illustrates in-phase connections, because both of the coils' hot leads flow to the hot side of the circuit, and the coils' ground leads flow to the ground side of the circuit. Everybody? Yup, everybody - Teles and Strats, Le ...
... "quack" or "cluck" tone. The drawings in the "Parallel and Series" document illustrates in-phase connections, because both of the coils' hot leads flow to the hot side of the circuit, and the coils' ground leads flow to the ground side of the circuit. Everybody? Yup, everybody - Teles and Strats, Le ...
SE-325 Manual
... to detect a failed NGR or a ground fault and provides one output contact for shunt or undervoltage operation in a main-breaker trip circuit. Trips are latched and indicated by LED’s. Ground-fault current is sensed by a CT200 window-type current transformer. Either CT input can be grounded to meet el ...
... to detect a failed NGR or a ground fault and provides one output contact for shunt or undervoltage operation in a main-breaker trip circuit. Trips are latched and indicated by LED’s. Ground-fault current is sensed by a CT200 window-type current transformer. Either CT input can be grounded to meet el ...
SP 200 - Farnell
... The SP 200 features a 200mV d.c. measurement range with auto-zero and auto-polarity. Decimal points are user selectable. The SP 200 features a negative rail generator which enables the meter to measure a signal referenced to its own power supply GND. LED backlighting ensures excellent readability un ...
... The SP 200 features a 200mV d.c. measurement range with auto-zero and auto-polarity. Decimal points are user selectable. The SP 200 features a negative rail generator which enables the meter to measure a signal referenced to its own power supply GND. LED backlighting ensures excellent readability un ...
STU13005N
... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notic ...
... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notic ...
TS21 LINEMAN`S TEST SET .
... the Test Set operates as a modern electronic telephone set. This mode is used for all normal communication functions. The OUT position bypasses the Test Set electronics, including the keypad. In this mode signaling is not possible, but the Test Set will operate at very low voltages, much like standa ...
... the Test Set operates as a modern electronic telephone set. This mode is used for all normal communication functions. The OUT position bypasses the Test Set electronics, including the keypad. In this mode signaling is not possible, but the Test Set will operate at very low voltages, much like standa ...
T4500 Auto Synchronizer
... be used to adapt the contact pulses to a signal, suitable for the speed trim input of an electronic speed controller. ...
... be used to adapt the contact pulses to a signal, suitable for the speed trim input of an electronic speed controller. ...
RH118
... Note 1: The inputs are shunted with back-to-back Zeners for overvoltage protection. Excessive current will flow if a differential voltage greater than 5V is applied to the inputs. Note 2: For supply voltages less than ±15V, the maximum input voltage is equal to the supply voltage. Note 3: These spec ...
... Note 1: The inputs are shunted with back-to-back Zeners for overvoltage protection. Excessive current will flow if a differential voltage greater than 5V is applied to the inputs. Note 2: For supply voltages less than ±15V, the maximum input voltage is equal to the supply voltage. Note 3: These spec ...
Current limitation 347KB
... • “A device that, when interrupting currents in its currentlimiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less than that obtainable in the same circuit if the device were replaced with a solid conductor having comparable impedance.” ...
... • “A device that, when interrupting currents in its currentlimiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less than that obtainable in the same circuit if the device were replaced with a solid conductor having comparable impedance.” ...
Printed Circuit Board Layout
... board itself) can serve as efficient antenna parts. Nevertheless, even at frequencies up to several GHz, these antenna parts should be relatively easy to spot. For example, at 1 GHz the wavelength in free space is 30 cm. A quarter wavelength is 7.5 cm. Therefore an efficient antenna part will have t ...
... board itself) can serve as efficient antenna parts. Nevertheless, even at frequencies up to several GHz, these antenna parts should be relatively easy to spot. For example, at 1 GHz the wavelength in free space is 30 cm. A quarter wavelength is 7.5 cm. Therefore an efficient antenna part will have t ...
Transmission Line (TL) Effects
... the source to the load is 2nS, then any of the signals with a rise-time less than 4nS becomes a TL. In this case, termination is required to guarantee minimum overshoots and undershoots caused by reflections. Excessive TL reflections can cause electromagnetic interference and random logic or DSP fal ...
... the source to the load is 2nS, then any of the signals with a rise-time less than 4nS becomes a TL. In this case, termination is required to guarantee minimum overshoots and undershoots caused by reflections. Excessive TL reflections can cause electromagnetic interference and random logic or DSP fal ...
T4500 Manual
... The voltage difference is selectable between 2% to 10% (see the resistor table on page 2 for selecting the DVolt window value). If the voltage difference is too high, the voltage matching function of the unit can be used (see the separate section on voltage matching). ...
... The voltage difference is selectable between 2% to 10% (see the resistor table on page 2 for selecting the DVolt window value). If the voltage difference is too high, the voltage matching function of the unit can be used (see the separate section on voltage matching). ...
1998 Strategic Communications Plan
... Precise control over current flows back to the source. Isolate sensitive analog circuitry from digital switching. ADC CMOS interfaces. Identify each pin as either a digital pin or an analog pin. Perform the split such that each pin has it’s respective GND plane underneath the pin. ...
... Precise control over current flows back to the source. Isolate sensitive analog circuitry from digital switching. ADC CMOS interfaces. Identify each pin as either a digital pin or an analog pin. Perform the split such that each pin has it’s respective GND plane underneath the pin. ...
Interface Protection for HDMI
... providing a DC backdrive path through a blocking circuit from the biasing supply. In the discrete schematic above, there are hidden implementation pitfalls that may not be initially obvious. These potential hazards include impedance and layout tuning for TMDS lines, appropriate threshold voltages an ...
... providing a DC backdrive path through a blocking circuit from the biasing supply. In the discrete schematic above, there are hidden implementation pitfalls that may not be initially obvious. These potential hazards include impedance and layout tuning for TMDS lines, appropriate threshold voltages an ...
Designing an Ultra Low Power Digital-to-Analog Converter
... ABSTRACT: In this paper an ultra-low power Digital-to-Analog Converter (DAC) for ultra-low power applications is presented. A number of techniques are used to reduce the power consumption and relatively boost the speed of the DAC. These techniques include low current source and mirrors besides using ...
... ABSTRACT: In this paper an ultra-low power Digital-to-Analog Converter (DAC) for ultra-low power applications is presented. A number of techniques are used to reduce the power consumption and relatively boost the speed of the DAC. These techniques include low current source and mirrors besides using ...
HARMONICS - Understanding the Facts - Part 3
... One recent survey showed the percentage the total electrical consumption by non-linear loads will double from the year 1985 to 2000. The AC-DC converter used in the switching-type power supplies found in most personal computers and peripheral equipment, such as printers, is an example of a non-linea ...
... One recent survey showed the percentage the total electrical consumption by non-linear loads will double from the year 1985 to 2000. The AC-DC converter used in the switching-type power supplies found in most personal computers and peripheral equipment, such as printers, is an example of a non-linea ...
IECSTD - Version 3 - المنظمة العربية للتنمية الصناعية والتعدين
... 712.433.2 Overload protection may be omitted to the PV main cable if the continuous current-carrying capacity is equal to or greater than 1,25 times I SC STC of the PV generator. NOTE The requirements of 712.433.1 and 712.433.2 are only r elevant for protection of the cables. See as well the manufac ...
... 712.433.2 Overload protection may be omitted to the PV main cable if the continuous current-carrying capacity is equal to or greater than 1,25 times I SC STC of the PV generator. NOTE The requirements of 712.433.1 and 712.433.2 are only r elevant for protection of the cables. See as well the manufac ...
Lab 5: Resistance, current, and circuits
... of the dipole by turning the knob on the power supply. You also used a different dipole direction (~ perpendicular to the first one) that gave a very different set of ECG traces. You obviously know the dipole directions you used for the two different data sets. But suppose you didn’t know, and you n ...
... of the dipole by turning the knob on the power supply. You also used a different dipole direction (~ perpendicular to the first one) that gave a very different set of ECG traces. You obviously know the dipole directions you used for the two different data sets. But suppose you didn’t know, and you n ...
PDF
... independently of the type of fault or any event that happens in the system, provided that the whole system remains connected to the supply grid, i.e. the line breaker does not trip. For most practical cases, a more economical design can be achieved by only compensating the positive and negative sequ ...
... independently of the type of fault or any event that happens in the system, provided that the whole system remains connected to the supply grid, i.e. the line breaker does not trip. For most practical cases, a more economical design can be achieved by only compensating the positive and negative sequ ...
Installing MonoRail
... Reducing dimming noise Dimming a transformer may create a buzzing noise, which may be objectionable in certain applications. To reduce buzzing, we recommend the following: • Use the compatible dimmer type recommended for the transformer • Add a debuzzing dimming coil in series on one of the 120 volt ...
... Reducing dimming noise Dimming a transformer may create a buzzing noise, which may be objectionable in certain applications. To reduce buzzing, we recommend the following: • Use the compatible dimmer type recommended for the transformer • Add a debuzzing dimming coil in series on one of the 120 volt ...
... volts rather than the calculated 35 volts, and 2, transformers are rated at full load, but there is no load on it at the moment. This completes the power supply of our EDM. Next time we look at the pulse generator. By connecting the black and yellow wires together, we get nominally 36 volts from th ...
High Speed Hardware Design Techniques
... When the components of a breadboard of this type are wired point-to-point in the air (a type of construction strongly advocated by Robert A. Pease of National Semiconductor (Reference 6) and sometimes known as "bird's nest" construction) there is always the risk of the circuitry being crushed and re ...
... When the components of a breadboard of this type are wired point-to-point in the air (a type of construction strongly advocated by Robert A. Pease of National Semiconductor (Reference 6) and sometimes known as "bird's nest" construction) there is always the risk of the circuitry being crushed and re ...
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.