RTU Zinatniskais raksts
... for determination of driven mechanism behavior in such regimes as self start, reverse, repeated closing. Thus, there is an opportunity to get rotation frequency curves for any IM with different load factors and load torques without application of graphic and analytic methods. For mechanism exact sto ...
... for determination of driven mechanism behavior in such regimes as self start, reverse, repeated closing. Thus, there is an opportunity to get rotation frequency curves for any IM with different load factors and load torques without application of graphic and analytic methods. For mechanism exact sto ...
A Voltage Controlled PFCCUK Converter Based PMBLDC Drive
... for the DC capacitor resulting in a pulsed current from the AC mains as resulting in various power quality (PQ) disturbances at AC mains such as poor power factor (PF), increased total harmonic distortion (THD) of AC mains current and its high crest factor (CF). The power quality (PQ) disturbances a ...
... for the DC capacitor resulting in a pulsed current from the AC mains as resulting in various power quality (PQ) disturbances at AC mains such as poor power factor (PF), increased total harmonic distortion (THD) of AC mains current and its high crest factor (CF). The power quality (PQ) disturbances a ...
HART 1303 SLO - HCC Learning Web
... COURSE DESCRIPTION A basic study of electrical motors used in air conditioning and refrigeration including motor winding configuration, type of single phase motor & three phase motor, motor starting devices, operating relays/contactors, safety controls and devices, wiring diagrams, study of differen ...
... COURSE DESCRIPTION A basic study of electrical motors used in air conditioning and refrigeration including motor winding configuration, type of single phase motor & three phase motor, motor starting devices, operating relays/contactors, safety controls and devices, wiring diagrams, study of differen ...
R/C Electric Systems - Rich Valley RC Club
... per cell (even once), they may be ruined. Because Li-Po’s are very sensitive to minimum and especially maximum voltage, it is almost universally agreed that it is important to keep the cells of a Li-Po battery well balanced to avoid over-charging any cell. Li-Po batteries must be charged with a char ...
... per cell (even once), they may be ruined. Because Li-Po’s are very sensitive to minimum and especially maximum voltage, it is almost universally agreed that it is important to keep the cells of a Li-Po battery well balanced to avoid over-charging any cell. Li-Po batteries must be charged with a char ...
Spindle Drive System Troubleshooting
... 9) Wye/Delta Contactors - For machines with Wye/Delta High/Low contactors; all 7500 rpm machines and some custom machines. If old or pitted, consider replacing the contactors. Do not use sand paper to try and clean. The contacts are silver plated (lightly) and sanding typically adds to additional fa ...
... 9) Wye/Delta Contactors - For machines with Wye/Delta High/Low contactors; all 7500 rpm machines and some custom machines. If old or pitted, consider replacing the contactors. Do not use sand paper to try and clean. The contacts are silver plated (lightly) and sanding typically adds to additional fa ...
Lab 2 – Stepper Motor
... One final issue has to do with the power supply for the stepper motor. The power supply that you have in the kits is a +9V AC-DC wall adapter2. However, the stepper motor is rated for only +5V DC. If you were to connect the motor to the +9V supply, the motor will overheat. Therefore, we need to lowe ...
... One final issue has to do with the power supply for the stepper motor. The power supply that you have in the kits is a +9V AC-DC wall adapter2. However, the stepper motor is rated for only +5V DC. If you were to connect the motor to the +9V supply, the motor will overheat. Therefore, we need to lowe ...
Rotary Phase Converters
... pivot irrigation systems. Current balance is generally not as critical on these loads because the motors generally are not operating near their full load rating or come on intermittently. They are also applicable for most electronic or resistive heat loads. Can variable or multiple speed motors be o ...
... pivot irrigation systems. Current balance is generally not as critical on these loads because the motors generally are not operating near their full load rating or come on intermittently. They are also applicable for most electronic or resistive heat loads. Can variable or multiple speed motors be o ...
Hercules Dual 15A 6-20V Motor Controller Introduction
... controller processor, motor drive circuit, charging circuit and protection circuit. It features a complete solution to power supply, control and drive. Compared with L298, its half bridge motor controller IR2104 and N-MOSFET take prominent advantage to drive heavy load device with output current eve ...
... controller processor, motor drive circuit, charging circuit and protection circuit. It features a complete solution to power supply, control and drive. Compared with L298, its half bridge motor controller IR2104 and N-MOSFET take prominent advantage to drive heavy load device with output current eve ...
PDF
... motor horsepower exceeds approximately 30% of the supply transformer(s) base kVA rating, if no generators are present [2]. Whereas, If generator is present, and no other sources are involved, an analysis should be done whenever the motor horsepower exceeds 10–15% of the generator kVA rating, dependi ...
... motor horsepower exceeds approximately 30% of the supply transformer(s) base kVA rating, if no generators are present [2]. Whereas, If generator is present, and no other sources are involved, an analysis should be done whenever the motor horsepower exceeds 10–15% of the generator kVA rating, dependi ...
Controls - gbeshop.com
... Adjustable 1.5A-3A drive current settings for each axis - 25%,50%,75%,100% of full current can be set for different stepper motors Overload, over-current and over-temperature safety - Full protection for your computer and peripheral equipment ! On board current switching - Power output can be ...
... Adjustable 1.5A-3A drive current settings for each axis - 25%,50%,75%,100% of full current can be set for different stepper motors Overload, over-current and over-temperature safety - Full protection for your computer and peripheral equipment ! On board current switching - Power output can be ...
Motor Interfacing with the Handy Board
... stepper, in order for current to flow in opposite directions in each phase (i.e., independent stator winding), the polarity of the voltage applied to the winding must reverse (hence the name, bipolar). In a unipolar stepper, each phase has a center tap, so if current is supplied at the center tap, i ...
... stepper, in order for current to flow in opposite directions in each phase (i.e., independent stator winding), the polarity of the voltage applied to the winding must reverse (hence the name, bipolar). In a unipolar stepper, each phase has a center tap, so if current is supplied at the center tap, i ...
Design procedures for small synchronous generators with interior
... energy. For this the surface current density of the magnets are set to zero. Fig. 9 shows the field plot of the motor when the total magneto motive force (mmf), caused by the three currents of the stator winding, is aligned with the direct axis of the machine. The q-axis reaxtance can be found when ...
... energy. For this the surface current density of the magnets are set to zero. Fig. 9 shows the field plot of the motor when the total magneto motive force (mmf), caused by the three currents of the stator winding, is aligned with the direct axis of the machine. The q-axis reaxtance can be found when ...
Belts vs Gears - Penn State Mechanical and Nuclear Engineering
... General Types of Electric Motors ...
... General Types of Electric Motors ...
Stepper Motor Driver BCMSSMD1
... The SD2 clock is typically 0V low 12V high. In order to accommodate TTL clock levels from a PC I/O port or similar device, a level shifter has been incorporated in the EXT CLOCK input line. TTL level signals need only be capable of sourcing 100uA in the high state when applied to the EXT CLOCK input ...
... The SD2 clock is typically 0V low 12V high. In order to accommodate TTL clock levels from a PC I/O port or similar device, a level shifter has been incorporated in the EXT CLOCK input line. TTL level signals need only be capable of sourcing 100uA in the high state when applied to the EXT CLOCK input ...
What is `duty cycle` for an electric gate operator
... If the gates are used a lot, will the automatic gate drive system wear out faster? ‘Gate Drive Systems Australia’ are to their knowledge, the only gate operator manufacturer which exclusively uses Industrial cast iron gearboxes, these gearboxes are designed and used in heavy intensive applications s ...
... If the gates are used a lot, will the automatic gate drive system wear out faster? ‘Gate Drive Systems Australia’ are to their knowledge, the only gate operator manufacturer which exclusively uses Industrial cast iron gearboxes, these gearboxes are designed and used in heavy intensive applications s ...
Electric motor
An electric motor is an electrical machine that converts electrical energy into mechanical energy. The reverse of this would be the conversion of mechanical energy into electrical energy and is done by an electric generator.In normal motoring mode, most electric motors operate through the interaction between an electric motor's magnetic field and winding currents to generate force within the motor. In certain applications, such as in the transportation industry with traction motors, electric motors can operate in both motoring and generating or braking modes to also produce electrical energy from mechanical energy.Found in applications as diverse as industrial fans, blowers and pumps, machine tools, household appliances, power tools, and disk drives, electric motors can be powered by direct current (DC) sources, such as from batteries, motor vehicles or rectifiers, or by alternating current (AC) sources, such as from the power grid, inverters or generators. Small motors may be found in electric watches. General-purpose motors with highly standardized dimensions and characteristics provide convenient mechanical power for industrial use. The largest of electric motors are used for ship propulsion, pipeline compression and pumped-storage applications with ratings reaching 100 megawatts. Electric motors may be classified by electric power source type, internal construction, application, type of motion output, and so on.Electric motors are used to produce linear or rotary force (torque), and should be distinguished from devices such as magnetic solenoids and loudspeakers that convert electricity into motion but do not generate usable mechanical powers, which are respectively referred to as actuators and transducers.