Slide 1
... • This is simple and allows the system to be in a energy efficient sleep mode. • This is our feedback loop. – Limit Control • Limit the maximum amount the motor can rotate so that there is no mechanical damage. ...
... • This is simple and allows the system to be in a energy efficient sleep mode. • This is our feedback loop. – Limit Control • Limit the maximum amount the motor can rotate so that there is no mechanical damage. ...
Using the HP Z3801A as a Lab Frequency Standard
... But having dragged together various bits of information, I thought it might be useful to have it and my conclusions all in one place. The most generally useful information I found was on Bill Jones, K8CU's great webpage (see the Sources section at the end of this article). ...
... But having dragged together various bits of information, I thought it might be useful to have it and my conclusions all in one place. The most generally useful information I found was on Bill Jones, K8CU's great webpage (see the Sources section at the end of this article). ...
Homework - Electricity
... Name the particle that carries energy around an electrical circuit. What is current ? What quantity is a measure of the energy that electrons have ? If the resistance is very high, is the circuit current low or high ? Where would you find the power rating of an appliance ? A light bulb is rated at 1 ...
... Name the particle that carries energy around an electrical circuit. What is current ? What quantity is a measure of the energy that electrons have ? If the resistance is very high, is the circuit current low or high ? Where would you find the power rating of an appliance ? A light bulb is rated at 1 ...
Motor Sizing
... Sizing an Industrial Motor for the Job Any DC permanent magnet motor has a figure of merit called the motor Constant (Km). This rating is usually in units of inch ounces per root watt (Kt/Sqrt[Rm]) which is a very useful measure because it describes a motors ability to produce torque as a function o ...
... Sizing an Industrial Motor for the Job Any DC permanent magnet motor has a figure of merit called the motor Constant (Km). This rating is usually in units of inch ounces per root watt (Kt/Sqrt[Rm]) which is a very useful measure because it describes a motors ability to produce torque as a function o ...
1. The simple version
... Otherwise known as "diode-pump circuits", these supplies have the advantage of much higher efficiency than the series regulator -- the switch is either fully on (so there is no voltage drop across it) or fully off (so no current flows in it) and, since power = VI, no power is dissipated in the switc ...
... Otherwise known as "diode-pump circuits", these supplies have the advantage of much higher efficiency than the series regulator -- the switch is either fully on (so there is no voltage drop across it) or fully off (so no current flows in it) and, since power = VI, no power is dissipated in the switc ...
14EM08 Freighter Fuel Level Detection And Overload Alarming
... enable 32-bit code execution at maximum clock rate. For critical code size applications, the alternative ...
... enable 32-bit code execution at maximum clock rate. For critical code size applications, the alternative ...
microcontroller based control of three phase bldc motor
... program has been dumped on to the PIC16Fseries device and fed to the MOSFETs of three phase fully controlled bridge converter driven by IR2101 driver circuit. The output from the converter is fed to the three phase stator winding of 24V, 80 W, 1500 rpm BLDC motor and the motor is found to run at con ...
... program has been dumped on to the PIC16Fseries device and fed to the MOSFETs of three phase fully controlled bridge converter driven by IR2101 driver circuit. The output from the converter is fed to the three phase stator winding of 24V, 80 W, 1500 rpm BLDC motor and the motor is found to run at con ...
180.0 ° 50.01 Hz 49.99 Hz 230.2 V 228.1 V
... Currents up to 25 A and voltages up to 500 V can be applied directly to the instrument. The current input range can be extended by using external current transformers. ...
... Currents up to 25 A and voltages up to 500 V can be applied directly to the instrument. The current input range can be extended by using external current transformers. ...
Unity power factor Converter based on a Fuzzy
... Active PFCs have increasingly been used in the last few years in a wide range of industrial power supplies. This involves a preregulator between the rectifier and the load (Fig. 1) [2]. By controlling the applied switching, the current will take a sinusoidal shape like the source voltage; also, the t ...
... Active PFCs have increasingly been used in the last few years in a wide range of industrial power supplies. This involves a preregulator between the rectifier and the load (Fig. 1) [2]. By controlling the applied switching, the current will take a sinusoidal shape like the source voltage; also, the t ...
Introduction to DC Electric Motors
... Principle of How Motors Work: Electrical current flowing in a loop of wire will produce a magnetic field across the loop. When this loop is surrounded by the field of another magnet, the loop will turn, producing a force (called torque) that results in mechanical motion. ...
... Principle of How Motors Work: Electrical current flowing in a loop of wire will produce a magnetic field across the loop. When this loop is surrounded by the field of another magnet, the loop will turn, producing a force (called torque) that results in mechanical motion. ...
SYN-921 Single Voltage Power Supply
... the SYN- standard card chassis such as the SYN-370 (single supply version) and SYN-350 (dual supply version) The SYN-921 provides power to the SYN-370/350 chassis back plane on which are mounted fourteen / twelve 9-pin female D connectors through which +12V regulated DC voltage is fed to plug-in car ...
... the SYN- standard card chassis such as the SYN-370 (single supply version) and SYN-350 (dual supply version) The SYN-921 provides power to the SYN-370/350 chassis back plane on which are mounted fourteen / twelve 9-pin female D connectors through which +12V regulated DC voltage is fed to plug-in car ...
Redi-Flo Variable Frequency Drive Manual
... To operate the Redi-Flo VFD system, simply: 1. Submerge the Redi-Flo2 (MP1) or Redi-Flo4 (SPE) pump in the water to be pumped. (Note: insure pump is rotating in the correct direction, see page 6) 2. Connect the motor leads to the Redi-Flo VFD. (Note: With RF4 Variable Performance Pumps you must have ...
... To operate the Redi-Flo VFD system, simply: 1. Submerge the Redi-Flo2 (MP1) or Redi-Flo4 (SPE) pump in the water to be pumped. (Note: insure pump is rotating in the correct direction, see page 6) 2. Connect the motor leads to the Redi-Flo VFD. (Note: With RF4 Variable Performance Pumps you must have ...
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.