Basic training for industrial-duty and commercial-duty
... electronic controls and high-power-density rechargeable batteries, have all revitalized the versatile DC motor. DC motors have extremely high torque capabilities and can be used in conjunction with relatively simple solid state control devices to give programmed acceleration and deceleration over a ...
... electronic controls and high-power-density rechargeable batteries, have all revitalized the versatile DC motor. DC motors have extremely high torque capabilities and can be used in conjunction with relatively simple solid state control devices to give programmed acceleration and deceleration over a ...
Understanding RF/Microwave Solid State Switches and their Applications Application Note
... and microwave frequencies. Its resistance value varies from less than 1Ω (ON) to more than 10kΩ (OFF) depending on the amount of current flowing through it. As a current-controlled device, the resistance is determined only by the forward biased DC current. When the control current is switched on and ...
... and microwave frequencies. Its resistance value varies from less than 1Ω (ON) to more than 10kΩ (OFF) depending on the amount of current flowing through it. As a current-controlled device, the resistance is determined only by the forward biased DC current. When the control current is switched on and ...
Comparative Evaluation of Space Vector Based Pulse Width
... The RMS current ripple over a sub-cycle corresponding to sequences 0127, 0121 and 7212 is compared here. Based on the expressions for RMS flux ripple over a sub-cycle derived in section 3.1, the sequences can be compared with each other and their individual zones of superior performance can be ident ...
... The RMS current ripple over a sub-cycle corresponding to sequences 0127, 0121 and 7212 is compared here. Based on the expressions for RMS flux ripple over a sub-cycle derived in section 3.1, the sequences can be compared with each other and their individual zones of superior performance can be ident ...
TOPIC: 191005 KNOWLEDGE: K1.01 [2.8/3.1]
... Refer to the partial drawing of two identical radial-flow centrifugal pumps in a cooling water system (see figure below). The cooling water system is being returned to service following maintenance on the pumps. Each pump is driven by an identical three-phase AC induction motor. Pump A was started f ...
... Refer to the partial drawing of two identical radial-flow centrifugal pumps in a cooling water system (see figure below). The cooling water system is being returned to service following maintenance on the pumps. Each pump is driven by an identical three-phase AC induction motor. Pump A was started f ...
LMX2370/LMX2371/LMX2372 PLLatinum Dual Frequency Synthesizer for RF Personal Communications
... The phase detector’s current source output pumps charge into an external loop filter, which then integrates into the VCO’s control voltage. The charge pump steers the charge pump output CPo to VP (pump-up) or Ground (pump-down). When locked, CPo is primarily in a TRI-STATE mode with small correction ...
... The phase detector’s current source output pumps charge into an external loop filter, which then integrates into the VCO’s control voltage. The charge pump steers the charge pump output CPo to VP (pump-up) or Ground (pump-down). When locked, CPo is primarily in a TRI-STATE mode with small correction ...
60 kV to 500 kV Technical Interconnection Requirements
... 60 kV to 500 kV Technical Interconnection Requirements For Power Generators ...
... 60 kV to 500 kV Technical Interconnection Requirements For Power Generators ...
micromaster 430
... Only suitably qualified personnel trained in the setup, installation, commissioning and operation of the product should carry out work on the device/system. Only permanently-wired input power connections are allowed. This equipment must be grounded (IEC 536 Class 1, NEC and other applicable standard ...
... Only suitably qualified personnel trained in the setup, installation, commissioning and operation of the product should carry out work on the device/system. Only permanently-wired input power connections are allowed. This equipment must be grounded (IEC 536 Class 1, NEC and other applicable standard ...
Utility frequency
The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency of the oscillations of alternating current (AC) in an electric power grid transmitted from a power plant to the end-user. In large parts of the world this is 50 Hz, although in the Americas and parts of Asia it is typically 60 Hz. Current usage by country or region is given in the list of mains power around the world.During the development of commercial electric power systems in the late 19th and early 20th centuries, many different frequencies (and voltages) had been used. Large investment in equipment at one frequency made standardization a slow process. However, as of the turn of the 21st century, places that now use the 50 Hz frequency tend to use 220–240 V, and those that now use 60 Hz tend to use 100–127 V. Both frequencies coexist today (Japan uses both) with no great technical reason to prefer one over the other and no apparent desire for complete worldwide standardization.Unless specified by the manufacturer to operate on both 50 and 60 Hz, appliances may not operate efficiently or even safely if used on anything other than the intended frequency.