
Submerge Scooters Background and History Motor types Lithium
... Brushed motors are very efficient if well designed and implemented DPV's are a perfect application for brushed motors: DPV's most often used at or near full load, where brushed motors are most efficient. Simplest possible control system with zero electronics. Low RPM motors (<1000 RPM) have very li ...
... Brushed motors are very efficient if well designed and implemented DPV's are a perfect application for brushed motors: DPV's most often used at or near full load, where brushed motors are most efficient. Simplest possible control system with zero electronics. Low RPM motors (<1000 RPM) have very li ...
AQ33247251
... DG system is assumed to be a combination of AC and DC sources. The AC system is converted to DC using active power factor correction technique (boost type PWM). DC-DC converter is used for voltage regulation. Boost converter is used since electromagnetic interference (EMI) is less and so reduced fil ...
... DG system is assumed to be a combination of AC and DC sources. The AC system is converted to DC using active power factor correction technique (boost type PWM). DC-DC converter is used for voltage regulation. Boost converter is used since electromagnetic interference (EMI) is less and so reduced fil ...
DC Sweep
... In the Trace Expression box at the bottom, type *1000 next to the name of the current that is already in the box. ...
... In the Trace Expression box at the bottom, type *1000 next to the name of the current that is already in the box. ...
Rectifying diodes application
... (50Hz). The amount of ripple voltage that is superimposed on top of the DC supply voltage by the diodes can be virtually eliminated by adding a much improved π-filter (pi-filter) to the output terminals of the bridge rectifier. This type of low-pass filter consists of two smoothing capacitors, usual ...
... (50Hz). The amount of ripple voltage that is superimposed on top of the DC supply voltage by the diodes can be virtually eliminated by adding a much improved π-filter (pi-filter) to the output terminals of the bridge rectifier. This type of low-pass filter consists of two smoothing capacitors, usual ...
Instruction and Assembly Manual for Filastruder Written by Tim
... • Motor voltage changes pressure, and thus extrusion rate and diameter. Try to run at constant 12 volts, as that is what the motor is rated for. When the heater cycles on and off you may hear a slight shift in the sound emitted by the motor. The resulting changing in motor velocity is very small, it ...
... • Motor voltage changes pressure, and thus extrusion rate and diameter. Try to run at constant 12 volts, as that is what the motor is rated for. When the heater cycles on and off you may hear a slight shift in the sound emitted by the motor. The resulting changing in motor velocity is very small, it ...
TDA8172 - PS electronic, sro
... Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implicatio ...
... Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implicatio ...
Instruction Manual
... The XS series power supply should be supplied only by a power source of the type indicated on its label. The unit should only be used with suitably rated cables and appropriate connectors, sourced by the end user. If in doubt, contact Excelsys Applications Department for assistance. For installation ...
... The XS series power supply should be supplied only by a power source of the type indicated on its label. The unit should only be used with suitably rated cables and appropriate connectors, sourced by the end user. If in doubt, contact Excelsys Applications Department for assistance. For installation ...
SITOP power for High Mains Voltages: 24V DC/20 A from 500
... third phase need not be connected, thus saving not only on installation time but also on cable fusing. Because power input is low, asymmetries in power consumption can be safely ignored. While we’re on the subject of power: if an output current of 20 A is insufficient, 2 devices can simply be switch ...
... third phase need not be connected, thus saving not only on installation time but also on cable fusing. Because power input is low, asymmetries in power consumption can be safely ignored. While we’re on the subject of power: if an output current of 20 A is insufficient, 2 devices can simply be switch ...
FINAL08spb
... h) Implement this circuit in CMOS. Draw the entire circuit except the op-amp using at most 1 resistor and as many transistors as you want (and the diode and 2 capacitors). You can leave the op-amp itself as a triangle. i) Do you care if the resistor in part h has a bad temperature coefficient? Why/w ...
... h) Implement this circuit in CMOS. Draw the entire circuit except the op-amp using at most 1 resistor and as many transistors as you want (and the diode and 2 capacitors). You can leave the op-amp itself as a triangle. i) Do you care if the resistor in part h has a bad temperature coefficient? Why/w ...
II 777 HVR SP B Installation Instructions
... 777-HVR-SP supports RS-485 communication standard. This standard allows up to 99 Model 777-HVR-SPs to be controlled and monitored from a single remote personal computer. NOTE: An RS-485 module and software is required to operate the communications bus. (Refer to RS-485 Installation Instructions for ...
... 777-HVR-SP supports RS-485 communication standard. This standard allows up to 99 Model 777-HVR-SPs to be controlled and monitored from a single remote personal computer. NOTE: An RS-485 module and software is required to operate the communications bus. (Refer to RS-485 Installation Instructions for ...
Mavilor Motors Company
... into an analogue voltage for the controller, a frequency-to-voltage converter is required. Analog Devices are one of the companies supplying ICs for this purpose. But many circuits of this kind are characterised by an electrical time constant that is the lowest pulse return time that we want to use. ...
... into an analogue voltage for the controller, a frequency-to-voltage converter is required. Analog Devices are one of the companies supplying ICs for this purpose. But many circuits of this kind are characterised by an electrical time constant that is the lowest pulse return time that we want to use. ...
T25102106
... induction generator and an AC/DC/AC IGBT-based PWM converter. The stator winding is connected directly to the 50 Hz grid while the rotor is fed at variable frequency through the AC/DC/AC converter[3]. It is a 4-quadrant converter which can realize bidirectional flowing of energy. On the one hand, th ...
... induction generator and an AC/DC/AC IGBT-based PWM converter. The stator winding is connected directly to the 50 Hz grid while the rotor is fed at variable frequency through the AC/DC/AC converter[3]. It is a 4-quadrant converter which can realize bidirectional flowing of energy. On the one hand, th ...
CircuitI_exp071411496961
... Figure 2: some characteristics of the waveforms The oscilloscope is basically a graph-displaying device - it draws a graph of an electrical signal. In most applications the graph shows how signals change over time: the vertical (Y) axis represents voltage and the horizontal (X) axis represents time. ...
... Figure 2: some characteristics of the waveforms The oscilloscope is basically a graph-displaying device - it draws a graph of an electrical signal. In most applications the graph shows how signals change over time: the vertical (Y) axis represents voltage and the horizontal (X) axis represents time. ...
Tester
... and, after irradiation has stopped, to measure the static decay curve. ●This device that is designed to measure half life conforms to the Japanese Industrial Standard JIS L1094-1980 Testing Methods for Electrostatic Propensity of Woven and Knitted Fabrics. ●Since air ions generated by the corona dis ...
... and, after irradiation has stopped, to measure the static decay curve. ●This device that is designed to measure half life conforms to the Japanese Industrial Standard JIS L1094-1980 Testing Methods for Electrostatic Propensity of Woven and Knitted Fabrics. ●Since air ions generated by the corona dis ...
power transmission activity
... To get a basic overview of how electrical energy makes it from the power generating station to your home, read the article on “How Power Grids Work” at http://science.howstuffworks.com/environmental/energy/power.htm and answer the following questions. 1. Identify each of the main parts of the power ...
... To get a basic overview of how electrical energy makes it from the power generating station to your home, read the article on “How Power Grids Work” at http://science.howstuffworks.com/environmental/energy/power.htm and answer the following questions. 1. Identify each of the main parts of the power ...
Electric Tricycle Project: Appropriate Mobility
... find, was a solution to our problem that meets our specific needs of affordability and appropriateness. The advantage of finding these solutions is that we can see what works, what has been tried, and what’s available on the market. Then we can more effectively consider how to design a similar produ ...
... find, was a solution to our problem that meets our specific needs of affordability and appropriateness. The advantage of finding these solutions is that we can see what works, what has been tried, and what’s available on the market. Then we can more effectively consider how to design a similar produ ...
Variable-frequency drive

A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.