Electrical Technology Memo (English)
... As the load increases on the motor shaft, the actual speed of the rotor tends to fall further behind the speed of the rotating magnetic field in the stator. This difference in speed causes more magnetic lines to be cut, resulting in more torque being developed in the rotor and delivered to the sha ...
... As the load increases on the motor shaft, the actual speed of the rotor tends to fall further behind the speed of the rotating magnetic field in the stator. This difference in speed causes more magnetic lines to be cut, resulting in more torque being developed in the rotor and delivered to the sha ...
BIO-ELECTRIC MEASUREMENTS
... and plant cells. We hope that, through this experiment, you will gain the basic knowledge of bioelectric measurements and the precautions necessary for obtaining meaningful data from biological systems. In this experiment, we will measure three types of bio-electric signals. 1) AC ”noise” which the ...
... and plant cells. We hope that, through this experiment, you will gain the basic knowledge of bioelectric measurements and the precautions necessary for obtaining meaningful data from biological systems. In this experiment, we will measure three types of bio-electric signals. 1) AC ”noise” which the ...
7B22 数据手册DataSheet 下载
... other process control signals. The 7B Series modules amplify, linearize, isolate, protect and convert the transducer output signals to standardized analog inputs for high-level analog I/O subsystems. The 7B Series Subsystem consists of 19-inch rackcompatible hardware (model AC 1363), with universal ...
... other process control signals. The 7B Series modules amplify, linearize, isolate, protect and convert the transducer output signals to standardized analog inputs for high-level analog I/O subsystems. The 7B Series Subsystem consists of 19-inch rackcompatible hardware (model AC 1363), with universal ...
Unit 5 Baseband
... advantage because the cable may then be used for longer distances and to carry power for intermediate equipment such as line repeaters. The DC-component can be easily and cheaply removed before the signal reaches the decoding circuitry. Bipolar encoding is preferable to non-return-to-zero where sign ...
... advantage because the cable may then be used for longer distances and to carry power for intermediate equipment such as line repeaters. The DC-component can be easily and cheaply removed before the signal reaches the decoding circuitry. Bipolar encoding is preferable to non-return-to-zero where sign ...
Project Proposal
... NAND, NOT & NOR, NOT & XOR, NAND & NOR, NAND & XOR, and NOR & XOR. This way we can explore how to deal with not only transistors, but also with transmission gates (XOR uses a transmission gate). We will not be using level shifters in our analysis, we would assume Body effect and subthreshold leakage ...
... NAND, NOT & NOR, NOT & XOR, NAND & NOR, NAND & XOR, and NOR & XOR. This way we can explore how to deal with not only transistors, but also with transmission gates (XOR uses a transmission gate). We will not be using level shifters in our analysis, we would assume Body effect and subthreshold leakage ...
Voltage Doublers
... charges in such a way that, in the ideal case, exactly twice the voltage is produced at the output as at its input. The simplest of these circuits are a form of rectifier which take an AC voltage as input and outputs a doubled DC voltage. The switching elements are simple diodes and they are driven ...
... charges in such a way that, in the ideal case, exactly twice the voltage is produced at the output as at its input. The simplest of these circuits are a form of rectifier which take an AC voltage as input and outputs a doubled DC voltage. The switching elements are simple diodes and they are driven ...
HRC100/s
... Parameter setting: Allow user to modify setting and store them by inside internal FLASH memory, the parameter can not be ...
... Parameter setting: Allow user to modify setting and store them by inside internal FLASH memory, the parameter can not be ...
g Accelerometers ADXL78 i
... if the resonant frequency of the sensor is low, the displacement per unit acceleration is high. The sensor may reach the mechanical limit of travel if the applied acceleration is high enough. This can be remedied by locating the accelerometer where it does not see high values of acceleration, and by ...
... if the resonant frequency of the sensor is low, the displacement per unit acceleration is high. The sensor may reach the mechanical limit of travel if the applied acceleration is high enough. This can be remedied by locating the accelerometer where it does not see high values of acceleration, and by ...
The Linear Variable Differential Transformer (LVDT)
... When the armature is moved from one end to the other through the centre position the output voltages changes from maximum to zero and back to maximum again but in the process changes its phase angle by 180 deg’s. This enables the LVDT to produce an output AC signal whose magnitude represents the am ...
... When the armature is moved from one end to the other through the centre position the output voltages changes from maximum to zero and back to maximum again but in the process changes its phase angle by 180 deg’s. This enables the LVDT to produce an output AC signal whose magnitude represents the am ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... For example, in an analog audio signal, the instantaneous voltage of the signal varies continuously with the pressure of the sound waves. It differs from a digital signal, in which a continuous quantity is represented by a discrete function which can only take on one of a finite number of values. Th ...
... For example, in an analog audio signal, the instantaneous voltage of the signal varies continuously with the pressure of the sound waves. It differs from a digital signal, in which a continuous quantity is represented by a discrete function which can only take on one of a finite number of values. Th ...
AC Induction Motor Slip – What It Is And How To
... Selecting an oversized AC induction motor also reduces slip. Larger motors exhibit less slip, and it gets smaller with a partial (rather than full) motor load. For example, refer to Table 1. The required power is 10 hp at about 1,800 rpm and 1.5 percent speed accuracy is required. We know that a 10- ...
... Selecting an oversized AC induction motor also reduces slip. Larger motors exhibit less slip, and it gets smaller with a partial (rather than full) motor load. For example, refer to Table 1. The required power is 10 hp at about 1,800 rpm and 1.5 percent speed accuracy is required. We know that a 10- ...
FAN73402 LED Backlight Driving Boost Switch F
... boost converter. The PWM dimming signal controls three nodes in the IC: gate signal to the switching FET, gate signal to the dimming FET, and output connection of the transconductance amplifier. When the PWM dimming signal is HIGH, the gates of the switching FET and dimming FET are enabled. At the s ...
... boost converter. The PWM dimming signal controls three nodes in the IC: gate signal to the switching FET, gate signal to the dimming FET, and output connection of the transconductance amplifier. When the PWM dimming signal is HIGH, the gates of the switching FET and dimming FET are enabled. At the s ...
SG1577A Dual Synchronous DC/DC Controller SG1577A — Dual Sync
... high-side MOSFET. Over-current protection is triggered when the voltage drop on external high-side MOSFET’s RDS(ON) is greater than the programmable current limit voltage threshold. 120µA flowing through an external resistor between input voltage and the CLP pin sets the threshold of current limit v ...
... high-side MOSFET. Over-current protection is triggered when the voltage drop on external high-side MOSFET’s RDS(ON) is greater than the programmable current limit voltage threshold. 120µA flowing through an external resistor between input voltage and the CLP pin sets the threshold of current limit v ...
DMS-20PC-0-DCM-C Datasheet
... voltage monitors are great replacements for older, hard-to-read, analog panel meters. Simply connect a positive dc voltage across the rear terminals and the meters are fully operational — no additional components or power supplies are required! The large, 0.37"/9.4mm, LED displays can be easily read ...
... voltage monitors are great replacements for older, hard-to-read, analog panel meters. Simply connect a positive dc voltage across the rear terminals and the meters are fully operational — no additional components or power supplies are required! The large, 0.37"/9.4mm, LED displays can be easily read ...
FAN2001/FAN2002 1A High-Efficiency Step-Down DC-DC Converter F
... on again starting the next pulse. The converter continues these pulses until the high threshold (typical 1.6% above nominal value) is reached. A higher output voltage in PFM mode gives additional headroom for the voltage drop during a load transient from light to full load. The voltage overshoot dur ...
... on again starting the next pulse. The converter continues these pulses until the high threshold (typical 1.6% above nominal value) is reached. A higher output voltage in PFM mode gives additional headroom for the voltage drop during a load transient from light to full load. The voltage overshoot dur ...
100V Input DC/DC Controller Generates Positive or Negative
... for surviving high input voltage transients. This device can achieve efficiencies up to 96% and is well suited for harsh industrial, automotive, medical and telecom applications. With a programmable fixed or synchronizable operating frequency from 100kHz to 1MHz, designers can choose a wide range of ...
... for surviving high input voltage transients. This device can achieve efficiencies up to 96% and is well suited for harsh industrial, automotive, medical and telecom applications. With a programmable fixed or synchronizable operating frequency from 100kHz to 1MHz, designers can choose a wide range of ...
Lab 4 - ece.unm.edu
... The CS and CD MOSFET amplifiers can be compared to the CE and CC BJT amplifiers respectively. Like the CE amplifier, the CS amplifier has a negative voltage gain and an output impedance approximately equal to the drain resistor (collector resistor for the CE amplifier). The CD amplifier is comparabl ...
... The CS and CD MOSFET amplifiers can be compared to the CE and CC BJT amplifiers respectively. Like the CE amplifier, the CS amplifier has a negative voltage gain and an output impedance approximately equal to the drain resistor (collector resistor for the CE amplifier). The CD amplifier is comparabl ...
FSD210 Fairchild Power Switch (FPS)
... The FSD210 is specially designed for an off-line SMPS with minimal external components. The FSD210 is a monolithic high voltage power switching regulator that combines an LDMOS SenseFET with a voltage mode PWM control block. The integrated PWM controller features: A fixed oscillator with frequency m ...
... The FSD210 is specially designed for an off-line SMPS with minimal external components. The FSD210 is a monolithic high voltage power switching regulator that combines an LDMOS SenseFET with a voltage mode PWM control block. The integrated PWM controller features: A fixed oscillator with frequency m ...
Mobile Electric-Discharge Blasting Unit for Splitting off and
... tunnels and so on. The numerous studies have shown conclusive advantages of electric-discharge technology, such as absence of toxic substances, destructive acoustic and seismic shock waves, an ability to adjust transferred energy to destroyed object. The amount of stored energy is one of the main pa ...
... tunnels and so on. The numerous studies have shown conclusive advantages of electric-discharge technology, such as absence of toxic substances, destructive acoustic and seismic shock waves, an ability to adjust transferred energy to destroyed object. The amount of stored energy is one of the main pa ...
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.