1 - UniMAP Portal
... 8. The armature winding of a dc motor has 320 conductors, only 70 % of which lie directly under the poles, where the flux density B = 1.1 T. The armature diameter is 26 cm and its length is 18 cm. The conductor current is 12 A. Determine: a) The total force created by the conductor. b) The torque de ...
... 8. The armature winding of a dc motor has 320 conductors, only 70 % of which lie directly under the poles, where the flux density B = 1.1 T. The armature diameter is 26 cm and its length is 18 cm. The conductor current is 12 A. Determine: a) The total force created by the conductor. b) The torque de ...
Introduction to(GMAW) Gas Metal Arc Welding
... •Requires special gas mixtures •Decreased warpage is possible •Decreased need for jigs or ...
... •Requires special gas mixtures •Decreased warpage is possible •Decreased need for jigs or ...
DN367 - Tiny Versatile Buck Regulators Operate from 3.6V to 36V Input
... Linear Technology offers two new buck regulators that operate from a wide input voltage range (3.6V to 36V) and take so little space that they easily solve many difficult power supply problems. The LT®1936 and LT1933 are perfect for applications with disparate power inputs or wide range input power ...
... Linear Technology offers two new buck regulators that operate from a wide input voltage range (3.6V to 36V) and take so little space that they easily solve many difficult power supply problems. The LT®1936 and LT1933 are perfect for applications with disparate power inputs or wide range input power ...
DC POWER SUPPLY BLOCK DIAGRAM OF POWER SUPPLY
... An AC powered unregulated power supply usually uses a transformer to convert the voltage from the wall outlet (mains) to a different, nowadays usually lower, voltage. If it is used to produce DC, a rectifier is used to convert alternating voltage to a pulsating direct voltage, followed by a filter, ...
... An AC powered unregulated power supply usually uses a transformer to convert the voltage from the wall outlet (mains) to a different, nowadays usually lower, voltage. If it is used to produce DC, a rectifier is used to convert alternating voltage to a pulsating direct voltage, followed by a filter, ...
The PWM Control of the Three-phase Induction Motor Ping Wei
... three-phase induction motor. It is by adjusting the pulse width and the pulse duty ratio to regulate the average voltage. The PWM technology [7], accompanied by the development of power electronic devices, has a good development and currently has matured. By using the PWM technique, the inverter out ...
... three-phase induction motor. It is by adjusting the pulse width and the pulse duty ratio to regulate the average voltage. The PWM technology [7], accompanied by the development of power electronic devices, has a good development and currently has matured. By using the PWM technique, the inverter out ...
High Speed Buffer Amplifier
... capacitor for good high frequency decoupling and a tantalum type for lower frequencies. They should be located as close as possible to the buffer’s power supply pins. A large ground plane is used to minimize high frequency ground drops and stray coupling. ...
... capacitor for good high frequency decoupling and a tantalum type for lower frequencies. They should be located as close as possible to the buffer’s power supply pins. A large ground plane is used to minimize high frequency ground drops and stray coupling. ...
Determining Relay Coil Inductance
... with magnetizing force which, in turn, is determined by coil voltage. For values most meaningful to the circuit designer, inductance should be measured under conditions that simulate actual relay service; that is, at rated voltage and current. Inductance with armature seated represents actual applic ...
... with magnetizing force which, in turn, is determined by coil voltage. For values most meaningful to the circuit designer, inductance should be measured under conditions that simulate actual relay service; that is, at rated voltage and current. Inductance with armature seated represents actual applic ...
study on metal melti study on metal melting at high frequency ng at
... series LC circuit with a certain configuration. Inside the coil with L inductivity one introduces the metal (Φ) to be melted [7]. By modifying the frequency of the Uinv voltage wave from the exit of the static converter and my altering the modulation degree (m=AS/AD) we can obtain the resonance of t ...
... series LC circuit with a certain configuration. Inside the coil with L inductivity one introduces the metal (Φ) to be melted [7]. By modifying the frequency of the Uinv voltage wave from the exit of the static converter and my altering the modulation degree (m=AS/AD) we can obtain the resonance of t ...
Lab 2
... 2.4 Unlike resistors, diodes allow current to flow only in one direction. To identify the direction of current flow, measure the resistance of the given diode using the multimeter in both directions. Mark the terminals as + and - (the current ...
... 2.4 Unlike resistors, diodes allow current to flow only in one direction. To identify the direction of current flow, measure the resistance of the given diode using the multimeter in both directions. Mark the terminals as + and - (the current ...
synchronous
... 4. Phase is not the same, but voltage, frequency, and phase sequence are the same. The two sets of phasor voltages will maintain a steady phase difference and the lamps will glow with the same intensity. To make the phase the same or the phase difference zero, the frequency of the incoming machine i ...
... 4. Phase is not the same, but voltage, frequency, and phase sequence are the same. The two sets of phasor voltages will maintain a steady phase difference and the lamps will glow with the same intensity. To make the phase the same or the phase difference zero, the frequency of the incoming machine i ...
ee2353 high voltage engineering
... • A switching surge is a short duration transient voltage produced in the system due to a sudden opening or closing of a switch or c.b or due to an arcing at a fault in the system. • Impulse generator circuit is modified to give longer duration wave shape,100/1000 μs,R1 is increased to very high val ...
... • A switching surge is a short duration transient voltage produced in the system due to a sudden opening or closing of a switch or c.b or due to an arcing at a fault in the system. • Impulse generator circuit is modified to give longer duration wave shape,100/1000 μs,R1 is increased to very high val ...
Source-Free RLC Circuit
... Note that the equation for the natural frequency of the RLC circuit is the same whether the components are in series or in parallel. ...
... Note that the equation for the natural frequency of the RLC circuit is the same whether the components are in series or in parallel. ...
The Colpitts Oscillator
... • Piezoelectric crystal is used in the feedback loop for the frequency control • Quartz crystal is normally used in electronic applications in the form of a quartz wafer • Piezoelectric Effect: when a changing mechanical stress is applied across the crystal to cause it to vibrate, a voltage is devel ...
... • Piezoelectric crystal is used in the feedback loop for the frequency control • Quartz crystal is normally used in electronic applications in the form of a quartz wafer • Piezoelectric Effect: when a changing mechanical stress is applied across the crystal to cause it to vibrate, a voltage is devel ...
HiTek Power Technical Datasheet
... supply systems designed to meet the rigorous requirements of ion and electron beam systems within a compact assembly. The design utilises IGBT technology operating at 20kHz to provide superior performance, coupled with an unrivalled resistance to damage from surges and arcs. The power converter uses ...
... supply systems designed to meet the rigorous requirements of ion and electron beam systems within a compact assembly. The design utilises IGBT technology operating at 20kHz to provide superior performance, coupled with an unrivalled resistance to damage from surges and arcs. The power converter uses ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""