Active Self Supplied AC-DC Converter for Piezoelectric Energy
... equivalent input offset voltages of the operational amplifiers. The voltage across the storage capacitance is variable; to prevent a non linear power consumption of the driving circuitry as in [4], a supply independent bias circuitry is used. During the start-up the energy stored into CS is not enou ...
... equivalent input offset voltages of the operational amplifiers. The voltage across the storage capacitance is variable; to prevent a non linear power consumption of the driving circuitry as in [4], a supply independent bias circuitry is used. During the start-up the energy stored into CS is not enou ...
Motor Efficiency and Fault Zone Analysis
... through the shorted loop, creating intense heat and insulation damage. Due to the nature of a random wound design, a shorted turn could occur with much higher impedance, allowing the motor to run for extended periods of time before eventually destroying the coil with the high currents. Form wound co ...
... through the shorted loop, creating intense heat and insulation damage. Due to the nature of a random wound design, a shorted turn could occur with much higher impedance, allowing the motor to run for extended periods of time before eventually destroying the coil with the high currents. Form wound co ...
RC Filter and Basic Timer Functionality
... capacitor is polarized (which may or may not be the case depending on the type of capacitor you were given by your lab instructor). Not all capacitors are polarized, but electrolytic capacitors are. Electrolytic caps look like little aluminum cans. If you look at the side of the can, you should see ...
... capacitor is polarized (which may or may not be the case depending on the type of capacitor you were given by your lab instructor). Not all capacitors are polarized, but electrolytic capacitors are. Electrolytic caps look like little aluminum cans. If you look at the side of the can, you should see ...
Reactive Power and Voltage Control
... transformers, reactors, capacitors etc that are directly or indirectly rendering electricity to consumers at desired voltage level. Each series element in this system has reactance which has reactive power demand as loss proportional to square of current passing through it. Reactive power losses a ...
... transformers, reactors, capacitors etc that are directly or indirectly rendering electricity to consumers at desired voltage level. Each series element in this system has reactance which has reactive power demand as loss proportional to square of current passing through it. Reactive power losses a ...
Lab2
... The differential amplifier, or differential pair, is an essential building block in all integrated amplifiers (basic structure is shown in figure 1-a). In general, the input stage of any analog integrated circuit with more than one input consists of a differential pair or differential amplifier. The ...
... The differential amplifier, or differential pair, is an essential building block in all integrated amplifiers (basic structure is shown in figure 1-a). In general, the input stage of any analog integrated circuit with more than one input consists of a differential pair or differential amplifier. The ...
Design Optimization of Bulk Capacitor
... Bulk Capacitor – Definition / Function Definition Bulk Capacitor is combination of capacitors which have different design purpose. It is called as DC Link, since basic function is filtering of DC flow. Y-Capacitor, X Capacitor and bus bars are located inside Power Inverter under certain Purpose. ...
... Bulk Capacitor – Definition / Function Definition Bulk Capacitor is combination of capacitors which have different design purpose. It is called as DC Link, since basic function is filtering of DC flow. Y-Capacitor, X Capacitor and bus bars are located inside Power Inverter under certain Purpose. ...
IIS-375-LED - IOTA Engineering
... The unit’s electronics shall include a self-contained inverter section with a fully automatic, thermal-compensating variable-rate battery charger, AC lockout feature, low battery voltage disconnect, DC overload, short circuit and brownout protection as standard. The unit shall utilize a sealed lead ...
... The unit’s electronics shall include a self-contained inverter section with a fully automatic, thermal-compensating variable-rate battery charger, AC lockout feature, low battery voltage disconnect, DC overload, short circuit and brownout protection as standard. The unit shall utilize a sealed lead ...
DN188 - Inexpensive Circuit Charges Lithium-Ion Cells
... that can be used to charge a single Lithium-Ion cell. The circuit provides constant-current/constant-voltage (CC/ CV) charging from an inexpensive, unregulated 6V wall adapter. The charger is built around a single LTC®1541, which contains a voltage reference, op amp and comparator. The high accuracy ...
... that can be used to charge a single Lithium-Ion cell. The circuit provides constant-current/constant-voltage (CC/ CV) charging from an inexpensive, unregulated 6V wall adapter. The charger is built around a single LTC®1541, which contains a voltage reference, op amp and comparator. The high accuracy ...
DC fans - specials - ebm
... ebm-papst answers with a complete range of DC fans with temperaturecontrolled speed adjustment via a temperature sensor, available in a variety of standard dimensions. Installation is very simple. Either an external temperature sensor in the form of an exposed wire that can be placed anywhere, or an ...
... ebm-papst answers with a complete range of DC fans with temperaturecontrolled speed adjustment via a temperature sensor, available in a variety of standard dimensions. Installation is very simple. Either an external temperature sensor in the form of an exposed wire that can be placed anywhere, or an ...
Feb 2000 10µA Quiescent Current Step
... by using Burst Mode operation. Burst Mode operation commences when the load, detected by a comparator monitoring the ITH voltage, falls below about 20%–30% of the maximum load. During Burst Mode operation, short burst cycles of normal switching to charge the output capacitor alternate with longer sl ...
... by using Burst Mode operation. Burst Mode operation commences when the load, detected by a comparator monitoring the ITH voltage, falls below about 20%–30% of the maximum load. During Burst Mode operation, short burst cycles of normal switching to charge the output capacitor alternate with longer sl ...
Surges Harm ATS and Inverters
... surges enter a facility via the AC power lines. These surges will not typically cause breakers to trip or fuses to operate because they are too fast and do not have sufficient energy. But their ...
... surges enter a facility via the AC power lines. These surges will not typically cause breakers to trip or fuses to operate because they are too fast and do not have sufficient energy. But their ...
AD8012 - Romstore
... In the time domain, the large signal output rise/fall time and slew rate is typically controlled by the small signal BW of the amplifier and the input signal step amplitude, respectively, and not the dc quiescent current of the gain stages (with the exception of input level shift diodes Q1/Q2). Usin ...
... In the time domain, the large signal output rise/fall time and slew rate is typically controlled by the small signal BW of the amplifier and the input signal step amplitude, respectively, and not the dc quiescent current of the gain stages (with the exception of input level shift diodes Q1/Q2). Usin ...
Full Function LED Driver IC For Automotive Interior Lighting
... Key features and benefits of the IS32LT3175 include: • Reduced BOM: LED driver with theatrical dimming in one small 8 pin SOP package resulting in 65% less components requiring less printed circuit board area. • Linear LED Driver: Low-noise, low-EMI, linear current source adjustable from 10~150 mA i ...
... Key features and benefits of the IS32LT3175 include: • Reduced BOM: LED driver with theatrical dimming in one small 8 pin SOP package resulting in 65% less components requiring less printed circuit board area. • Linear LED Driver: Low-noise, low-EMI, linear current source adjustable from 10~150 mA i ...
VOLTAGE DROP - Access Hardware Supply
... to allow cool down of the PTC. In essence, it could require a service call to reset the power supply. In addition, PTCs are very temperature sensitive. They will trip at lower current ratings as the ambient temperature goes up, and higher than specified current ratings as the ambient temperature goe ...
... to allow cool down of the PTC. In essence, it could require a service call to reset the power supply. In addition, PTCs are very temperature sensitive. They will trip at lower current ratings as the ambient temperature goes up, and higher than specified current ratings as the ambient temperature goe ...
EVALUATION AND DESIGN SUPPORT CIRCUIT FUNCTION AND BENEFITS
... With this arrangement, the system is not completely ratiometric because there is a voltage drop between the EXC+/EXC− pins and the SENSE+/SENSE− due to wiring resistance. The AD7195 has separate analog and digital power supply pins. The analog section must be powered from 5 V. The digital power supp ...
... With this arrangement, the system is not completely ratiometric because there is a voltage drop between the EXC+/EXC− pins and the SENSE+/SENSE− due to wiring resistance. The AD7195 has separate analog and digital power supply pins. The analog section must be powered from 5 V. The digital power supp ...
Command value signal card
... from 0 to +10 V, using in each case four internal potentiometers: P1 to P4 (channel 1) P5 to P8 (channel 2). – The individual command values are called up via the external enable signals (switching signals +24 V) that are allocated to the potentiometers: Command 1–1 to command 1–4 (channel 1) Comman ...
... from 0 to +10 V, using in each case four internal potentiometers: P1 to P4 (channel 1) P5 to P8 (channel 2). – The individual command values are called up via the external enable signals (switching signals +24 V) that are allocated to the potentiometers: Command 1–1 to command 1–4 (channel 1) Comman ...
RG3 - T4 - Siemens
... The actual value of the generator voltage is compared with an adjustable generator voltage setpoint. The resulting signal is compared with the output of the excitation limiter and taken to the input of the PI voltage controller. The PI voltage controller with adjustable gain and time response provid ...
... The actual value of the generator voltage is compared with an adjustable generator voltage setpoint. The resulting signal is compared with the output of the excitation limiter and taken to the input of the PI voltage controller. The PI voltage controller with adjustable gain and time response provid ...
FPF3040 IntelliMAX™ 20 V-Rated Dual Input Single Output Power-Source-Selector Switch
... power rails. The input voltage range operates from 4 V to 6.5 V at VBUS and from 4 V to 10.5 V at VIN to align with the needs of low-voltage portable device power rails. VIN and VBUS have the over-voltage protection functionality of typical 12 V and 7.5 V, respectively, to avoid unwanted damage to s ...
... power rails. The input voltage range operates from 4 V to 6.5 V at VBUS and from 4 V to 10.5 V at VIN to align with the needs of low-voltage portable device power rails. VIN and VBUS have the over-voltage protection functionality of typical 12 V and 7.5 V, respectively, to avoid unwanted damage to s ...
Data and Signal
... Depending on some type of typical signal formats or modulation schemes, a few terminologies evolved to classify different types of signals. So, we can have either a base band or broadband signalling. Base-band is defined as one that uses digital signalling, which is inserted in the transmission chan ...
... Depending on some type of typical signal formats or modulation schemes, a few terminologies evolved to classify different types of signals. So, we can have either a base band or broadband signalling. Base-band is defined as one that uses digital signalling, which is inserted in the transmission chan ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... currents in the QZSN can be reversed and the energy from the ac side can be delivered to the dc source. The analysis also shows that, unlike in the ZSI, part of the dc link ripple current will be absorbed by the two capacitors in the QZSN and not go through the dc source, which provides a better ope ...
... currents in the QZSN can be reversed and the energy from the ac side can be delivered to the dc source. The analysis also shows that, unlike in the ZSI, part of the dc link ripple current will be absorbed by the two capacitors in the QZSN and not go through the dc source, which provides a better ope ...
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.