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SC620 - Semtech
SC620 - Semtech

... The SC620 also employs an adjustable global current gain setting register to allow the current setting step size to vary from 31.25μA to 500μA. This provides a wide range of options for LED variation and dimming functions. The maximum output is also scaled by this step size, with a maximum of 25mA a ...
Amplification of biosignals by body potential driving. Analysis of the
Amplification of biosignals by body potential driving. Analysis of the

... will be analysed in detail. For shortness and clarity some abbreviations are introduced. Instead of 'driven-right-leg' the proposed two-electrode circuit will be referred to as 'body potential driver', or BPD for short. The asymmetrical amplifier will be referred to as 'amplifier'. The conclusions p ...
Syllabus (3rd Semester)
Syllabus (3rd Semester)

FSB50450AT Motion SPM 5 Series ®
FSB50450AT Motion SPM 5 Series ®

... 1. BVDSS is the absolute maximum voltage rating between drain and source terminal of each MOSFET inside Motion SPM® 5 product. VPN should be sufficiently less than this value considering the effect of the stray inductance so that VPN should not exceed BVDSS in any case. 2. tON and tOFF include the p ...
Using the IRS2982 in a PFC Flyback with opto
Using the IRS2982 in a PFC Flyback with opto

... too high because this would produce too much gain. If the overall feedback gain is too high the system becomes unstable and oscillates due to insufficient phase margin. For this reason an opto-isolator with a CTR of no more than 100% is necessary. 3. Selection of critical components The values of RL ...
ZXLD383 Summary A Product Line of
ZXLD383 Summary A Product Line of

... in Garden Light applications. A block diagram is shown for the ZXLD383 in Figure 1. With power applied and the enable pin held at VCC, an oscillator within the pulse control block forces the internal switching transistor to switch on to start an energy charge cycle. The low saturation voltage switch ...
MKK525-D-20-02 - B25673A5202A020
MKK525-D-20-02 - B25673A5202A020

... service life and protects against electric shock. The capacitor must be discharged to 75 V or less within 3 minutes. There must be not any switch, fuse or any other disconnecting device in the circuit between the power capacitor and the discharging device. PhaseCap Compact-capacitors either have a p ...
Film Capacitors - Power Factor Correction - MKK525-D-20
Film Capacitors - Power Factor Correction - MKK525-D-20

... service life and protects against electric shock. The capacitor must be discharged to 75 V or less within 3 minutes. There must be not any switch, fuse or any other disconnecting device in the circuit between the power capacitor and the discharging device. PhaseCap Compact-capacitors either have a p ...
MP4032-1 - Monolithic Power System
MP4032-1 - Monolithic Power System

... the AC line. The half-wave sinusoid signal on this pin provides a reference signal for the internal current control loop. Zero Current Detection Input. A negative going-edge triggers the turn-on signal of the internal MOSFET. Connect this pin to a resistor divider between the auxiliary winding to GN ...
Film Capacitors – Power Factor Correction
Film Capacitors – Power Factor Correction

... before the end of their usual service life cannot be completely ruled out in the current state of the art, even if they are operated as specified. In customer applications requiring a very high level of operational safety and especially in customer applications in which the malfunction or failure of ...
Electronic Slot Car Controller Mysteries Revealed
Electronic Slot Car Controller Mysteries Revealed

... appears that two transistors are used. That’s not the case. A Darlington power transistor, made up of two transistors internally, was chosen for this design due to its high current amplification capability. The result is a base current much lower than if a standard power transistor were used. A very ...
to notes16
to notes16

... Since Figs. 6 and 8 represent steady-state configuration and Fig. 7 represents the switching configuration, we see that at no time is it possible to encounter an open circuit. The preventive autotransformer is required in order to smoothen the transient encountered when switching from the Fig. 6 co ...
STP 3 & 4 8.3  Onsite Power Systems
STP 3 & 4 8.3 Onsite Power Systems

... utilizes digital timers that can reproduce the timing requirements by sensing the number of cycles of the electrical waveform itself. Coordination of the definite time delay and the upstream bus feeder breakers allows termination of the fault current before the feeder breakers are free to trip. Trip ...
Film Capacitors - Power Factor Correction - MKK480-D-20
Film Capacitors - Power Factor Correction - MKK480-D-20

... service life and protects against electric shock. The capacitor must be discharged to 75 V or less within 3 minutes. There must be not any switch, fuse or any other disconnecting device in the circuit between the power capacitor and the discharging device. PhaseCap Compact-capacitors either have a p ...
Film Capacitors - Power Factor Correction - MKK415-D-20
Film Capacitors - Power Factor Correction - MKK415-D-20

... service life and protects against electric shock. The capacitor must be discharged to 75 V or less within 3 minutes. There must be not any switch, fuse or any other disconnecting device in the circuit between the power capacitor and the discharging device. PhaseCap Compact-capacitors either have a p ...
BS 7671:2008 forms
BS 7671:2008 forms

... Main protective bonding conductors ...
Film Capacitors - Power Factor Correction - MKK440-D-30
Film Capacitors - Power Factor Correction - MKK440-D-30

... service life and protects against electric shock. The capacitor must be discharged to 75 V or less within 3 minutes. There must be not any switch, fuse or any other disconnecting device in the circuit between the power capacitor and the discharging device. PhaseCap Compact-capacitors either have a p ...
national unit specification: general information
national unit specification: general information

... There are two other Units in the group entitled Electrical Networks and Resonance and Transmission Lines and Complex Waves. This Unit and the Electrical Networks and Resonance Units are both at SCQF level 7 and are mandatory Units within the Principles/Technology section of the new HND Electronics a ...
Analog Devices Welcomes Hittite Microwave Corporation www.analog.com www.hittite.com
Analog Devices Welcomes Hittite Microwave Corporation www.analog.com www.hittite.com

... to the PCB RF ground plane, similar to that shown above. The evaluation circuit board shown above is available from Hittite Microwave Corporation upon request. ...
English User`s Manual
English User`s Manual

... This manual contains important safety and operation instructions for correct use of the power  supply. Read through the manual and pay special attention to the markings and labels of this unit  and equipment to be connected.  Pay special attention to these two types of notices used in this manual:  ...
Constant-Voltage, Constant-Current Controller With Primary
Constant-Voltage, Constant-Current Controller With Primary

... scheme is a combination of frequency and primary peak current modulation to provide high conversion efficiency across the load range. The control law provides a wide-dynamic operating range of output power which allows the power designer to achieve the <10-mW stand-by power requirement. During low-p ...
BU4S01G2
BU4S01G2

... extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use our Prod ...
Datasheet - IXYS Power
Datasheet - IXYS Power

... operate internal logic . Positive logic pulse at this pin resets flip-flops holding information about FAULT1 and FAULT2 conditions Positive logic pulse at this input restarts module Logic input to provide external clock in case synchronization between internal power supplies of different modules req ...
IF 1442 Revision 4
IF 1442 Revision 4

... an emergency ballast. When AC power is interrupted, the luminaire switches to a built-in battery power supply to light one lamp, providing emergency lighting for a minimum of ninety minutes. When AC power is restored the luminaire automatically switches from battery power to AC power. While operatin ...
Power Diodes Characteristics Power Diode
Power Diodes Characteristics Power Diode

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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.
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