AN3215
... In recent years the field of solar energy, the production of electric power using solar cells, is requiring power electronic solutions to manage the power delivered by the panels. The DC voltage provided by the photovoltaic field needs, in many cases, to be boosted before supplying a second electron ...
... In recent years the field of solar energy, the production of electric power using solar cells, is requiring power electronic solutions to manage the power delivered by the panels. The DC voltage provided by the photovoltaic field needs, in many cases, to be boosted before supplying a second electron ...
MAX8581/MAX8582 2.5MHz/1.5MHz Step-Down Converters with 60m Bypass in TDFN for CDMA PA Power
... amplifier (PA) in CDMA handsets. They integrate a highefficiency PWM step-down converter for medium- and low-power transmission and a 60mΩ (typ) bypass mode to power the PA directly from the battery during highpower transmission. They use an analog input driven by an external DAC to control the outp ...
... amplifier (PA) in CDMA handsets. They integrate a highefficiency PWM step-down converter for medium- and low-power transmission and a 60mΩ (typ) bypass mode to power the PA directly from the battery during highpower transmission. They use an analog input driven by an external DAC to control the outp ...
Datasheet - Traco Power
... All output wires must be rated for the power supply output current and must be c onnected with the correct polarity. All output terminals have to be used Sufficient cooling must be ensured. ¾ Never work on the power supply if power is supplied! Ri sk of electric a rcs an d el ectrical shock, w ...
... All output wires must be rated for the power supply output current and must be c onnected with the correct polarity. All output terminals have to be used Sufficient cooling must be ensured. ¾ Never work on the power supply if power is supplied! Ri sk of electric a rcs an d el ectrical shock, w ...
Micro Single Channel Output Units
... range of Cooper intelligent addressable control panels. It is suitable for switching low voltage (24V dc at 1A maximum), via a set of non latching relay contacts. It is suitable for switching HVAC control circuits, plant shutdown control circuits, fire door closure etc. Optional Variants The (MCOM-R ...
... range of Cooper intelligent addressable control panels. It is suitable for switching low voltage (24V dc at 1A maximum), via a set of non latching relay contacts. It is suitable for switching HVAC control circuits, plant shutdown control circuits, fire door closure etc. Optional Variants The (MCOM-R ...
Advanced Common-Mode Control techniques for Low
... A) OCMFB loops for buffered LV FD amplifiers: CMFB networks for the control of the output CM voltage component in FD amplifiers, have been addressed [3]. However, most of the traditional CM sense circuits cannot be used in very LV applications. The key problem is due to the FD amplifier voltage sign ...
... A) OCMFB loops for buffered LV FD amplifiers: CMFB networks for the control of the output CM voltage component in FD amplifiers, have been addressed [3]. However, most of the traditional CM sense circuits cannot be used in very LV applications. The key problem is due to the FD amplifier voltage sign ...
Name of Pacific Silicon Sensor Data Sheet
... The light spot applied to the QP50-6SD2 must be smaller than the diameter of the quadrant photodiode array. The detector active area has a diameter of 7.8 millimeters. If the light spot is too large, it may be reduced to fit the photodiode array by use of a lens. A decrease in output signal strength ...
... The light spot applied to the QP50-6SD2 must be smaller than the diameter of the quadrant photodiode array. The detector active area has a diameter of 7.8 millimeters. If the light spot is too large, it may be reduced to fit the photodiode array by use of a lens. A decrease in output signal strength ...
Array Protector - Crawford Broadcasting
... positive or negative depending on whether the sample input is higher or lower than the threshold/reference. The LM837 is able to swing to within 1-2 volts of the supply rails with the load resistors shown; other opamps will produce different results. With a "perfect" opamp, if the two inputs are exa ...
... positive or negative depending on whether the sample input is higher or lower than the threshold/reference. The LM837 is able to swing to within 1-2 volts of the supply rails with the load resistors shown; other opamps will produce different results. With a "perfect" opamp, if the two inputs are exa ...
design and simulation of a single-phase inverter with - Academica-e
... The current project has as major aim the design of a single-phase inverter for educational purposes. The main distinctive feature is the digital implementation of the PWM modulation. Since the first Arduino board was developed on 2005, there has been a turning point on the programming world, especia ...
... The current project has as major aim the design of a single-phase inverter for educational purposes. The main distinctive feature is the digital implementation of the PWM modulation. Since the first Arduino board was developed on 2005, there has been a turning point on the programming world, especia ...
Current Chopping a Simple Explanation, and Calculations to
... aimed to satisfy worldwide designs to both North American and International standards. These days, many installations motors may well be manufactured in third world countries to the cheaper less rigid International standards. Our design philosophy has been well proven over the many years that we hav ...
... aimed to satisfy worldwide designs to both North American and International standards. These days, many installations motors may well be manufactured in third world countries to the cheaper less rigid International standards. Our design philosophy has been well proven over the many years that we hav ...
Simple automatic-shutoff circuit uses few components
... the equation for biasing voltage. Various R2 values are possible, as the switching arrangement in Figure 4c shows. Capacitor CC (suggested to be 0.1 μF) acts in series with the signal to be investigated and supplies the biasing voltage in series with the signal. The minimum strength of the signal is ...
... the equation for biasing voltage. Various R2 values are possible, as the switching arrangement in Figure 4c shows. Capacitor CC (suggested to be 0.1 μF) acts in series with the signal to be investigated and supplies the biasing voltage in series with the signal. The minimum strength of the signal is ...
practical File
... armature voltage is kept constant. By decreasing the flux the speed can be increased and vice – versa. Hence the main flux of field control method the flux of a DC motor can be changed by changing field current with help of a shunt field rheostat. Since shunt field current is respectively small shun ...
... armature voltage is kept constant. By decreasing the flux the speed can be increased and vice – versa. Hence the main flux of field control method the flux of a DC motor can be changed by changing field current with help of a shunt field rheostat. Since shunt field current is respectively small shun ...
Experiment no. 2 NO LOAD AND LOAD TEST ON A DC SHUNT
... Performance characteristics of a DC machine are sensitive to the mode of excitation. To an extent the mode of excitation depends on the field winding as well. For instance in shunt excitation the field winding has high resistance owing to the large number of thin wire turns. Here shunt excitation is ...
... Performance characteristics of a DC machine are sensitive to the mode of excitation. To an extent the mode of excitation depends on the field winding as well. For instance in shunt excitation the field winding has high resistance owing to the large number of thin wire turns. Here shunt excitation is ...
Simple open-circuit protection for boost converters in LED driver
... boost configuration, the output voltage, VOUT, is monitored by using a voltage divider to produce a feedback voltage, VFB, for the circuit. The converter regulates the output voltage to keep VFB equal to the on-chip reference voltage, VREF. This topology can be adapted to maintain a constant current ...
... boost configuration, the output voltage, VOUT, is monitored by using a voltage divider to produce a feedback voltage, VFB, for the circuit. The converter regulates the output voltage to keep VFB equal to the on-chip reference voltage, VREF. This topology can be adapted to maintain a constant current ...
Digital Alternatives to Analogue Balanced Detection for
... for the splitting ratio of the beam splitter. Once this ratio is calculated the two beams are then balanced to achieve balanced detection. After calibration three digital balancing algorithms (DBAx) are considered for achieving balanced detection. 3.1. Digital Balancing Algorithm 1 In DBA1, point by ...
... for the splitting ratio of the beam splitter. Once this ratio is calculated the two beams are then balanced to achieve balanced detection. After calibration three digital balancing algorithms (DBAx) are considered for achieving balanced detection. 3.1. Digital Balancing Algorithm 1 In DBA1, point by ...
14PE3 Coupled Inductor Based Current
... be utilized in low voltage renewable systems where high voltage step-up is needed to interface with 110 Vt220 V AC systems. The proposed inverter possesses high boost ability with superior EMI immunity compared to a traditional voltage source inverter (VSI). Unlike the traditional VSI, the proposed ...
... be utilized in low voltage renewable systems where high voltage step-up is needed to interface with 110 Vt220 V AC systems. The proposed inverter possesses high boost ability with superior EMI immunity compared to a traditional voltage source inverter (VSI). Unlike the traditional VSI, the proposed ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.