1. Introduction - About the journal
... Once the carrier-signal at the desired frequency has been generated, it is divided in two equal parts, i.e. two signals with half of the original power and with the same phase are produced. To this purpose a broadband power divider is adopted [4]. The first output of the power divider is exploited a ...
... Once the carrier-signal at the desired frequency has been generated, it is divided in two equal parts, i.e. two signals with half of the original power and with the same phase are produced. To this purpose a broadband power divider is adopted [4]. The first output of the power divider is exploited a ...
Safe Use of Electrical Stimulators
... The maximum available energy from the STMISOC, STMISOD or STMISOE stimulus isolation adapters is limited to be considerably less than the 300 mJ maximum as specified by IEC 601-2-10. The STM200, BSLSTM/A/B and STMISOL/LA units from BIOPAC are capable of EXCEEDING the IEC 601-2-10 standard regarding ...
... The maximum available energy from the STMISOC, STMISOD or STMISOE stimulus isolation adapters is limited to be considerably less than the 300 mJ maximum as specified by IEC 601-2-10. The STM200, BSLSTM/A/B and STMISOL/LA units from BIOPAC are capable of EXCEEDING the IEC 601-2-10 standard regarding ...
Slide 1
... High load current and Low load voltage, 3MHz sampling frequency 4th order observer estimations of Process,K=0,3MHz,VL=0.1 IL=0.9 Process values of model with a 4th order observer,K=0,3MHz,VL=0.1 IL=0.9 ...
... High load current and Low load voltage, 3MHz sampling frequency 4th order observer estimations of Process,K=0,3MHz,VL=0.1 IL=0.9 Process values of model with a 4th order observer,K=0,3MHz,VL=0.1 IL=0.9 ...
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)
... checkers. There is no ideal adder cell that can be used by all types of applications. Therefore, many different circuits for binary addition have been proposed over the last decades [1, 2, 3, 4], covering a wide range of performance characteristics to satisfy the constraints enforced by different ap ...
... checkers. There is no ideal adder cell that can be used by all types of applications. Therefore, many different circuits for binary addition have been proposed over the last decades [1, 2, 3, 4], covering a wide range of performance characteristics to satisfy the constraints enforced by different ap ...
Cordless Telepohones
... systems. In these systems high power transmitters with large antenna configurations are employed at the transmitter whereas most receivers use simple antennas and are themselves relatively simple. An example of the receiver centered star is a weatherdata-collection network, with many unattended meas ...
... systems. In these systems high power transmitters with large antenna configurations are employed at the transmitter whereas most receivers use simple antennas and are themselves relatively simple. An example of the receiver centered star is a weatherdata-collection network, with many unattended meas ...
MACH Power
... MACH® devices have been designed with the capability to reset during system power-up. Following power-up, all flip-flops will be reset to LOW. The output state will depend on the logic polarity. This feature provides extra flexibility to the designer and is especially valuable in simplifying state m ...
... MACH® devices have been designed with the capability to reset during system power-up. Following power-up, all flip-flops will be reset to LOW. The output state will depend on the logic polarity. This feature provides extra flexibility to the designer and is especially valuable in simplifying state m ...
DN444 - Ideal Diodes Protect Against Power Supply Wiring Errors
... reliability. ORing diodes join the feeds together at the point of load, most often using Schottky diodes for low loss. MOSFET-based ideal diodes can be used to replace Schottky diodes for a significant reduction in power dissipation, simplifying the thermal layout and improving system efficiency. Figu ...
... reliability. ORing diodes join the feeds together at the point of load, most often using Schottky diodes for low loss. MOSFET-based ideal diodes can be used to replace Schottky diodes for a significant reduction in power dissipation, simplifying the thermal layout and improving system efficiency. Figu ...
Power-Combined Multipliers at 60 GHz Based on Fundamental
... The modulated and amplified fundamental signals are fed into the V-band doublers. The fundamental and 3rd isolations of the adopted doubler MMIC are 15 dBc and 25 dBc, respectively, with respect to the desired 2nd output signal level from 56 to 62 GHz. Moreover, the fundamental frequency is below the ...
... The modulated and amplified fundamental signals are fed into the V-band doublers. The fundamental and 3rd isolations of the adopted doubler MMIC are 15 dBc and 25 dBc, respectively, with respect to the desired 2nd output signal level from 56 to 62 GHz. Moreover, the fundamental frequency is below the ...
variable speed drives and motors a gambica technical guide
... Motor Losses & Loss Reduction Techniques ............................................. 11 ...
... Motor Losses & Loss Reduction Techniques ............................................. 11 ...
MC1408-8 datasheet - Mon Club-Elec
... reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes — Phil ...
... reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes — Phil ...
doc - Cornerstone Robotics
... o Motor Input and Output Ratings: Input Ratings: Voltage and Current Voltage: Since mobility is essential in robotics, the main sources of electrical power are batteries and to a lesser extent photovoltaic cells. Roboticists usually use motors that are rated for 6, 12, or 24 volts because the p ...
... o Motor Input and Output Ratings: Input Ratings: Voltage and Current Voltage: Since mobility is essential in robotics, the main sources of electrical power are batteries and to a lesser extent photovoltaic cells. Roboticists usually use motors that are rated for 6, 12, or 24 volts because the p ...
Document
... Peak value The voltage or current value of a waveform at its maximum positive or negative points. Peak-to-peak The voltage or current value of a waveform value measured from its minimum to its maximum points. rms value The value of a sinusoidal voltage that indicates ...
... Peak value The voltage or current value of a waveform at its maximum positive or negative points. Peak-to-peak The voltage or current value of a waveform value measured from its minimum to its maximum points. rms value The value of a sinusoidal voltage that indicates ...
MS Word - DXing.info
... selecting a wall wart is to make sure that it will supply power at least 3 volts DC in excess of the desired final controlled voltage, when the circuit is running at the designed load. This “3 volts in excess” comes from the basic needs of the voltage regulator itself. The most straight-forward appr ...
... selecting a wall wart is to make sure that it will supply power at least 3 volts DC in excess of the desired final controlled voltage, when the circuit is running at the designed load. This “3 volts in excess” comes from the basic needs of the voltage regulator itself. The most straight-forward appr ...
DC Motor Board - Zilogic Systems
... switches is shown in the following diagram. By controlling, the switches the motor can be made to rotate forward, reverse, brake, and free run. The various switch states and their effect on the motor is shown in the following table. ...
... switches is shown in the following diagram. By controlling, the switches the motor can be made to rotate forward, reverse, brake, and free run. The various switch states and their effect on the motor is shown in the following table. ...
Improvement of Voltage Stability by the Advanced High Side Voltage
... regulator that can improve power system voltage stability by adding supplemental control to conventional generator excitation system control has been developed. This paper describes the principles, characteristics, and advantages of applying advanced HSVC in comparison with a conventional automatic ...
... regulator that can improve power system voltage stability by adding supplemental control to conventional generator excitation system control has been developed. This paper describes the principles, characteristics, and advantages of applying advanced HSVC in comparison with a conventional automatic ...
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.