Switching Power Supply Design_ EMI
... • VMAX is the allowed dBμV noise level for the particular EMI standard. • Method 2 – Estimation using the first harmonic of input current • Assume the input current is a square wave (small ripple approximation) ...
... • VMAX is the allowed dBμV noise level for the particular EMI standard. • Method 2 – Estimation using the first harmonic of input current • Assume the input current is a square wave (small ripple approximation) ...
by Tony van Roon © by Tony van Roon The 555 timer
... resistance allowable from pin 2 to ground. For an astable configuration operating at V+ = 5 volts, this resistance is 3 Mega-ohm; it can be greater for higher V+ levels. Pin 3 (Output): The output of the 555 comes from a high-current totem-pole stage made up of transistors Q20 - Q24. Transistors Q21 ...
... resistance allowable from pin 2 to ground. For an astable configuration operating at V+ = 5 volts, this resistance is 3 Mega-ohm; it can be greater for higher V+ levels. Pin 3 (Output): The output of the 555 comes from a high-current totem-pole stage made up of transistors Q20 - Q24. Transistors Q21 ...
Swimming Pool Bonding
... bonded. Isolated parts that are not over 4 inches (102 mm) in any dimension and do not penetrate into the pool structure more than 1 inch (25.4 mm) shall not require bonding. 6. Electrical equipment. Metal parts of electrical equipment associated with the pool water circulating system, including pum ...
... bonded. Isolated parts that are not over 4 inches (102 mm) in any dimension and do not penetrate into the pool structure more than 1 inch (25.4 mm) shall not require bonding. 6. Electrical equipment. Metal parts of electrical equipment associated with the pool water circulating system, including pum ...
Power Factor Controller „BR 5306 / 5312“ Instruction book
... These are available both as conventional sequence circuits ( last in - first out ) and as circular circuits ( first in - first out ) ( Table 1 ). The switches "Mode 8, 9, 10, 11 and 12" on the back of the appliance ( Fig. 2 ) are provided for setting the regulating series. Regulating series 0 to 8 a ...
... These are available both as conventional sequence circuits ( last in - first out ) and as circular circuits ( first in - first out ) ( Table 1 ). The switches "Mode 8, 9, 10, 11 and 12" on the back of the appliance ( Fig. 2 ) are provided for setting the regulating series. Regulating series 0 to 8 a ...
SERCAL NDT Equipment Ltd
... CMCs. Nevertheless, other commonly used units may be used where considered appropriate for the intended audience. For example, the term “ppm” (part per million) is frequently used by manufacturers of test and measurement equipment to specify the performance of their products. Terms like this may be ...
... CMCs. Nevertheless, other commonly used units may be used where considered appropriate for the intended audience. For example, the term “ppm” (part per million) is frequently used by manufacturers of test and measurement equipment to specify the performance of their products. Terms like this may be ...
Swimming Pool Electrical Safety
... Underwater luminaires. The design of an underwater luminaire supplied from a branch circuit either directly or by way of a transformer or power supply meeting the requirements of Section E4206.1, shall be such that, where the fixture is properly installed without a ground-fault circuit interrupter, ...
... Underwater luminaires. The design of an underwater luminaire supplied from a branch circuit either directly or by way of a transformer or power supply meeting the requirements of Section E4206.1, shall be such that, where the fixture is properly installed without a ground-fault circuit interrupter, ...
HMC270AMS8G/270AMS8GE
... [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 ...
... [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 ...
Capture range control mechanism for voltage controlled oscillators
... oscillatory terminal thereof. 12. A voltage controlled oscillator comprising: an oscillator core for generating an output frequency dependent on a control voltage; and ...
... oscillatory terminal thereof. 12. A voltage controlled oscillator comprising: an oscillator core for generating an output frequency dependent on a control voltage; and ...
Surge Protection Portfolio
... Scan the QR code for a handy checklist and see if any areas in your customers’ residences or facilities are unprotected. ...
... Scan the QR code for a handy checklist and see if any areas in your customers’ residences or facilities are unprotected. ...
Lightning and surge protection for free field PV power plants
... ards must be particularly observed for the earth-termination systems of the operations buildings. The earth-termination systems of the PV generators and the operations buildings must be interconnected by means of a flat strip (30 mm x 3.5 mm) or a round wire (Ø 10 mm) (stainless steel (V4A), e.g. ma ...
... ards must be particularly observed for the earth-termination systems of the operations buildings. The earth-termination systems of the PV generators and the operations buildings must be interconnected by means of a flat strip (30 mm x 3.5 mm) or a round wire (Ø 10 mm) (stainless steel (V4A), e.g. ma ...
Electronic Water Level Gauge Installation, Operation - PRO-QUIP
... and Swagelok nut. All screws must be tightened and reinstalled if ...
... and Swagelok nut. All screws must be tightened and reinstalled if ...
SMP08
... associated with external buffers; outputs are stable with capacitive loads up to 500 pF. However, since the SMP08’s buffer outputs are not short-circuit protected, care should be taken to avoid shorting any output to the supplies or ground. ...
... associated with external buffers; outputs are stable with capacitive loads up to 500 pF. However, since the SMP08’s buffer outputs are not short-circuit protected, care should be taken to avoid shorting any output to the supplies or ground. ...
Identification Solutions for Data Center Infrastructure
... Located throughout the data center are physical infrastructure components that support IT equipment providing essential services to critical business applications. Any disruption of the physical infrastructure could cause interruption of business applications, resulting in lost revenue. Many of toda ...
... Located throughout the data center are physical infrastructure components that support IT equipment providing essential services to critical business applications. Any disruption of the physical infrastructure could cause interruption of business applications, resulting in lost revenue. Many of toda ...
Quick Installation Guide PVI-3.8/4.6-I
... resistance measured by the inverter are shown on the display. The inverter ONLY creates a parallel with the grid if the grid parameters fall within the range foreseen by current regulations and if the insulation resistance falls within the set parameters. --If the preliminary checks for parallel con ...
... resistance measured by the inverter are shown on the display. The inverter ONLY creates a parallel with the grid if the grid parameters fall within the range foreseen by current regulations and if the insulation resistance falls within the set parameters. --If the preliminary checks for parallel con ...
Table of Contents
... etc., and whether such damages are claimed to arise from breach of contract, in tort, the theory of product liability or otherwise; reservation is solely being made for IDEAL HEAT's statutory liability due to material breach of an essential contractual obligation, express representations, wrongful i ...
... etc., and whether such damages are claimed to arise from breach of contract, in tort, the theory of product liability or otherwise; reservation is solely being made for IDEAL HEAT's statutory liability due to material breach of an essential contractual obligation, express representations, wrongful i ...
ADP7118/ADP7142 - Analog Devices
... ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken ...
... ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken ...
3-Phase BLDC/PMSM Low Voltage Power Stage User Manual
... is connected to the MC33937 pin 28 OC_TH. Therefore, when DC bus current exceeds the adjusted threshold level, all six bridge transistors are switched off. After a fault state has been detected, all six gate drivers are off, until the fault state is cleared by the SPI command or RESET pin. The under ...
... is connected to the MC33937 pin 28 OC_TH. Therefore, when DC bus current exceeds the adjusted threshold level, all six bridge transistors are switched off. After a fault state has been detected, all six gate drivers are off, until the fault state is cleared by the SPI command or RESET pin. The under ...
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.