ELTR 120 (Semiconductors 1)
... While it is relatively easy to grasp the principle that we may create a square-shaped wave (or any other symmetrical waveshape) by mixing together the right combinations of sine waves at different frequencies and amplitudes, it is far from obvious that any periodic waveform may be decomposed into a ...
... While it is relatively easy to grasp the principle that we may create a square-shaped wave (or any other symmetrical waveshape) by mixing together the right combinations of sine waves at different frequencies and amplitudes, it is far from obvious that any periodic waveform may be decomposed into a ...
Laboratory Exercise 4 The Solenoid (two weeks – 200 pts)
... Both types, linear and rotational are available as either a holding (continuously energized) or as a latching type (ON-OFF pulse) with the latching types being used in either energized or power-off applications. Linear solenoids can also be designed for proportional motion control were the plunger p ...
... Both types, linear and rotational are available as either a holding (continuously energized) or as a latching type (ON-OFF pulse) with the latching types being used in either energized or power-off applications. Linear solenoids can also be designed for proportional motion control were the plunger p ...
cascaded and hybrid multilevel inverters with reduced number of
... require medium voltage and MW power level. For a medium voltage grid, it is troublesome to connect one power semiconductor switch directly [1-2]. High power and medium voltage inverter has recently become a research focus so far as known there are many problems in conventional two level inverter in ...
... require medium voltage and MW power level. For a medium voltage grid, it is troublesome to connect one power semiconductor switch directly [1-2]. High power and medium voltage inverter has recently become a research focus so far as known there are many problems in conventional two level inverter in ...
Neutral Point Clamped and Cascaded H
... Distortion (THD), high dv/dt and EMI1–4. Further operating these inverters at high switching frequency produces high switching loss. Multilevel inverters on the other hand, produce improved waveforms, lesser switching losses and THD and decreased voltage stress4. With multilevel inverters it is poss ...
... Distortion (THD), high dv/dt and EMI1–4. Further operating these inverters at high switching frequency produces high switching loss. Multilevel inverters on the other hand, produce improved waveforms, lesser switching losses and THD and decreased voltage stress4. With multilevel inverters it is poss ...
SERIES-PARALLEL DC CIRCUITS
... (d) Determine the magnitude of the percent difference between the calculated and measured values of parts 1(b) and 1(c) using the following equation: ...
... (d) Determine the magnitude of the percent difference between the calculated and measured values of parts 1(b) and 1(c) using the following equation: ...
Measuring Parasitic Capacitance and Inductance Using TDR
... reflected and transmitted waves that are identical in shape to the incident wave. The reflected wave differs from the incident wave in amplitude and direction of propagation. The transmitted wave differs only in amplitude. Discontinuities that are not simply impedance changes will produce reflected ...
... reflected and transmitted waves that are identical in shape to the incident wave. The reflected wave differs from the incident wave in amplitude and direction of propagation. The transmitted wave differs only in amplitude. Discontinuities that are not simply impedance changes will produce reflected ...
Ladda PDF Lärdomsprov som heltext
... In the modern power systems advanced automation is the first choice for all operations. At the same time when the automation level is advanced, safety and security are also vital. In this thesis automatic voltage control between two active controllers is analysed with all needed safety interlocks an ...
... In the modern power systems advanced automation is the first choice for all operations. At the same time when the automation level is advanced, safety and security are also vital. In this thesis automatic voltage control between two active controllers is analysed with all needed safety interlocks an ...
Tube Radio Restoration
... peak voltage of the replacement capacitor (525 volts for 450 volts working). In many cases this means series connection of replacement capacitors. To determine the circuit surge voltage, temporarily replace the faulty unit by a 1 or 2 mfd., 600 or 1000-volt paper capacitor. Then connect a 1000 ohms/ ...
... peak voltage of the replacement capacitor (525 volts for 450 volts working). In many cases this means series connection of replacement capacitors. To determine the circuit surge voltage, temporarily replace the faulty unit by a 1 or 2 mfd., 600 or 1000-volt paper capacitor. Then connect a 1000 ohms/ ...
Switched-mode and Resonant dc Power Supplies
... input is rectified, capacitively smoothed, and supplied to a high-frequency transistor chopper. The chopped dc voltage is transformed, rectified, and smoothed to give the required dc output voltage. A high-frequency transformer is used if an isolated output is required. The output voltage is sensed ...
... input is rectified, capacitively smoothed, and supplied to a high-frequency transistor chopper. The chopped dc voltage is transformed, rectified, and smoothed to give the required dc output voltage. A high-frequency transformer is used if an isolated output is required. The output voltage is sensed ...
3BC-YG-x - Bivar, Inc.
... Bivar 3mm T1 Package 2-Lead Bi-Color LED is ideal for those applications where dual signals need to be displayed at the same location such as standby-on indication for server or computer peripherals. Bivar offers white diffused LED lens for uniform light output and the 2-lead package simplifies the ...
... Bivar 3mm T1 Package 2-Lead Bi-Color LED is ideal for those applications where dual signals need to be displayed at the same location such as standby-on indication for server or computer peripherals. Bivar offers white diffused LED lens for uniform light output and the 2-lead package simplifies the ...
IEEE Draft Guide for the Specification of Fixed
... patents or patent applications for which a license may be required to implement an IEEE standard or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. ...
... patents or patent applications for which a license may be required to implement an IEEE standard or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. ...
BM1Q001FJ
... BM1Q00XFJ Series ●General Description The quasi-resonant controller typed AC/DC converter IC (BM1Q00XFJ series) provides an optimum system for all products that include an electrical outlet. Quasi-resonant operation enables soft switching and helps to keep EMI low. With MOSFET for switching and curr ...
... BM1Q00XFJ Series ●General Description The quasi-resonant controller typed AC/DC converter IC (BM1Q00XFJ series) provides an optimum system for all products that include an electrical outlet. Quasi-resonant operation enables soft switching and helps to keep EMI low. With MOSFET for switching and curr ...
DCS 3kW Series DC Power Supplies
... Some circuits are live even with the front panel switch turned off. Service, fuse verification, and connection of wiring to the chassis must be accomplished at least five minutes after power has been removed via external means; all circuits and/or terminals to be touched must be safety grounded to t ...
... Some circuits are live even with the front panel switch turned off. Service, fuse verification, and connection of wiring to the chassis must be accomplished at least five minutes after power has been removed via external means; all circuits and/or terminals to be touched must be safety grounded to t ...
Capacitance
... such as how far apart, what shape they are, or how large they are, as well as various other physical constants. The capacitance tells us what the potential difference between the conductors would be for a given amount of charge placed on two conductors (equal in magnitude and opposite in sign). Alte ...
... such as how far apart, what shape they are, or how large they are, as well as various other physical constants. The capacitance tells us what the potential difference between the conductors would be for a given amount of charge placed on two conductors (equal in magnitude and opposite in sign). Alte ...
Lateral SCR Devices with Low-Voltage High
... pin while the CMOS IC is operating in the noisy environments. Practically, due to the request of the “CE” mark from the European Community, an ESD gun with the ESD voltage of 8 KV or even up to 15 KV is used to test the electromagnetic compatibility (EMC) of the electronic products. The internationa ...
... pin while the CMOS IC is operating in the noisy environments. Practically, due to the request of the “CE” mark from the European Community, an ESD gun with the ESD voltage of 8 KV or even up to 15 KV is used to test the electromagnetic compatibility (EMC) of the electronic products. The internationa ...
Invertig 201 AC/DC
... turns the high frequency arc starting on. When the foot pedal is depressed, a high frequency arc will jump from the tungsten to the ground, initiating the arc. This makes it very easy to start the arc. Additionally, in the AC mode, the high frequency is only used to start the arc, unlike conventiona ...
... turns the high frequency arc starting on. When the foot pedal is depressed, a high frequency arc will jump from the tungsten to the ground, initiating the arc. This makes it very easy to start the arc. Additionally, in the AC mode, the high frequency is only used to start the arc, unlike conventiona ...
Capacitive current interruption with high voltage air
... As low‐cost switching devices in high voltage electrical power supply system disconnectors basically have an insulation function only. Nevertheless, they have a very limited capability to interrupt current (below one Ampere), e.g. from unloaded busbars or short overhead l ...
... As low‐cost switching devices in high voltage electrical power supply system disconnectors basically have an insulation function only. Nevertheless, they have a very limited capability to interrupt current (below one Ampere), e.g. from unloaded busbars or short overhead l ...
FAN6921ML Integrated Critical Mode PFC/Quasi-Resonant Current Mode PWM Controller
... Detecting the valley voltage signal of drain voltage of the PWM switch to achieve the valley voltage switching and minimize the switching loss on the PWM switch. Providing output over-voltage protection. A voltage comparator is built-in to the DET pin. The DET pin detects the flat voltage throug ...
... Detecting the valley voltage signal of drain voltage of the PWM switch to achieve the valley voltage switching and minimize the switching loss on the PWM switch. Providing output over-voltage protection. A voltage comparator is built-in to the DET pin. The DET pin detects the flat voltage throug ...
Aalborg Universitet Motor Integrated Variable Speed Drives Singh, Yash Veer
... A new trend in the variable speed drives (VSDs) is to develop fully integrated systems, which lead to low-cost products with shorter design cycles. Motor Integrated design of VSDs will reduce cable length to connect drive with machine windings and installation time for end user. The electric drives ...
... A new trend in the variable speed drives (VSDs) is to develop fully integrated systems, which lead to low-cost products with shorter design cycles. Motor Integrated design of VSDs will reduce cable length to connect drive with machine windings and installation time for end user. The electric drives ...
TPS62730 - Texas Instruments
... response, an additional voltage feedback loop ensures high DC accuracy as well. The DCS-Control enables switch frequencies up to 3 MHz, excellent transient and AC load regulation as well as operation with small and cost-competitive external components. The TPS6273x devices offer fixed output voltage ...
... response, an additional voltage feedback loop ensures high DC accuracy as well. The DCS-Control enables switch frequencies up to 3 MHz, excellent transient and AC load regulation as well as operation with small and cost-competitive external components. The TPS6273x devices offer fixed output voltage ...
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.""