UNIT - I BASIC MEASUREMENT CONCEPTS PERMANENT
... Instantaneous power: p(t) is the time function of the power, It is the product of the time functions of the voltage and current. This definition of instantaneous power is valid for signals of any waveform. The unit for instantaneous power is VA Reactive power: Q is the imaginary part of the comp ...
... Instantaneous power: p(t) is the time function of the power, It is the product of the time functions of the voltage and current. This definition of instantaneous power is valid for signals of any waveform. The unit for instantaneous power is VA Reactive power: Q is the imaginary part of the comp ...
A solid state replacement for the 3TF7 current regulator of the R
... There are two VFOs in the R-390(A), i.e. the BFO and the PTO. Frequency stability among other things is heavily influenced by supply voltages. Collins engineers spent a regulated power supply for B+ voltages (+150 VDC) for both VFO tubes. For the stabilization of the tube heating current regulator 3 ...
... There are two VFOs in the R-390(A), i.e. the BFO and the PTO. Frequency stability among other things is heavily influenced by supply voltages. Collins engineers spent a regulated power supply for B+ voltages (+150 VDC) for both VFO tubes. For the stabilization of the tube heating current regulator 3 ...
remote control of devices using cellphones
... BINARY CONVERTER MODULE • DTMF – Dual Tone Multiple Frequency Resultant signal of two tones at the same time for any key pressed f(t) = Asin(2*П*fa*t) + Bsin(2*П*fb*t) ...
... BINARY CONVERTER MODULE • DTMF – Dual Tone Multiple Frequency Resultant signal of two tones at the same time for any key pressed f(t) = Asin(2*П*fa*t) + Bsin(2*П*fb*t) ...
Abstract - Logic Mind Technologies
... of the prescaler is improved in two aspects. First, by adopting a new pseudo divide-by-2/3 prescaler, the minimum working period is effectively reduced by half a NOR gate's delay. Second, by changing the connection of TSPC D-Flip-Flops, the minimum working period is further reduced by half an invert ...
... of the prescaler is improved in two aspects. First, by adopting a new pseudo divide-by-2/3 prescaler, the minimum working period is effectively reduced by half a NOR gate's delay. Second, by changing the connection of TSPC D-Flip-Flops, the minimum working period is further reduced by half an invert ...
Presentation
... from U2 through the power bus! The classic description of this phenomenon is called “power supply coupling”, and can be minimized or eliminated by modifying how each chip receives its power for the main supply. By removing i2 from flowing in wires 1 and 2 that also feed U1, we can decouple the two c ...
... from U2 through the power bus! The classic description of this phenomenon is called “power supply coupling”, and can be minimized or eliminated by modifying how each chip receives its power for the main supply. By removing i2 from flowing in wires 1 and 2 that also feed U1, we can decouple the two c ...
- Krest Technology
... BASED ON Z-SOURCE INVERTERS ABSTRACT This paper presents a flux-weakening solution by employing the voltage boost capability of Z-source inverters to overcome the voltage limitation in conventional drives for highspeed applications, e.g. hybrid/electric vehicles. In this control strategy, a flux-wea ...
... BASED ON Z-SOURCE INVERTERS ABSTRACT This paper presents a flux-weakening solution by employing the voltage boost capability of Z-source inverters to overcome the voltage limitation in conventional drives for highspeed applications, e.g. hybrid/electric vehicles. In this control strategy, a flux-wea ...
14PE7 Control of Reduced-Rating Dynamic Voltage Restorer With a
... Voltage sags in an electrical grid are not always possible to avoid because of the finite clearing time of the faults that cause the voltage sags and the propagation of sags from the Transmission and distribution systems to the low-voltage loads. Voltage sags are the common reasons for interruption ...
... Voltage sags in an electrical grid are not always possible to avoid because of the finite clearing time of the faults that cause the voltage sags and the propagation of sags from the Transmission and distribution systems to the low-voltage loads. Voltage sags are the common reasons for interruption ...
Maximum Output Power of Class E Amplifier for a Given Transistor
... This paper presents an analytical result about maximum output electric power of a class E amplifier. When a transistor was specified, the highest switch voltage, the highest switch current and the lowest shunt capacitance are the restrictions in a design of a class E amplifier. These parameters can’ ...
... This paper presents an analytical result about maximum output electric power of a class E amplifier. When a transistor was specified, the highest switch voltage, the highest switch current and the lowest shunt capacitance are the restrictions in a design of a class E amplifier. These parameters can’ ...
TRUEPOWER NEW 550-WATT POWER SUPPLY USER`S MANUAL
... Antec’s TruePower New series uses DC to DC conversion for the 5V and 3.3V rails. The DC to DC voltage regulation module is the most advanced design, usually found on high-end motherboards, to step down DC voltage. This module operates at 85% efficiency, as opposed to traditional magnetic amplifiers ...
... Antec’s TruePower New series uses DC to DC conversion for the 5V and 3.3V rails. The DC to DC voltage regulation module is the most advanced design, usually found on high-end motherboards, to step down DC voltage. This module operates at 85% efficiency, as opposed to traditional magnetic amplifiers ...
ELECTRONICS 4 – Fundamentals of Electronics I
... somewhere within a complex circuit. Our example assumes that the resistor in whose voltage we are interested is just one of many in a complicated circuit that might include semiconductors and other devices. Most of the time, technicians will make voltage measurements on individual parts with the und ...
... somewhere within a complex circuit. Our example assumes that the resistor in whose voltage we are interested is just one of many in a complicated circuit that might include semiconductors and other devices. Most of the time, technicians will make voltage measurements on individual parts with the und ...
... design, i.e. 20A. Good resolution and accuracy were obtained, when the power factor improvement up to 0.95 have been achieved at different load currents. Five capacitors of the following values were used; 5µF, 10µF, 20µF, 40µF, 80µF with 300V. This combination can give a total capacitance between 5µ ...
Inductor Switching Regulator Design
... In order to calculate the require value of inductance for a Boost converter we follow the same procedure as described for the Buck converter, the difference being that the equations for duty cycle and inductor voltage change. Taking maximum input voltage as 5.5V, switching frequency as 100kHz and ma ...
... In order to calculate the require value of inductance for a Boost converter we follow the same procedure as described for the Buck converter, the difference being that the equations for duty cycle and inductor voltage change. Taking maximum input voltage as 5.5V, switching frequency as 100kHz and ma ...
O A RIGINAL RTICLES
... Power supplies are among the most important components of any industrial application. Standard power supply is designed to optimize the power required, resulting in maximized efficiency, power factor and load regulation. Industrial power supplies are used for applications such as: aircraft power sup ...
... Power supplies are among the most important components of any industrial application. Standard power supply is designed to optimize the power required, resulting in maximized efficiency, power factor and load regulation. Industrial power supplies are used for applications such as: aircraft power sup ...
Elektroniczne Układy i Systemy Zasilania
... - select proper wire diameter, use copper stripes or litz wire - select low ESR capacitors (for switching applications), as big (dimensions) as possible, connected in parallel, - make wide and thick copper paths on the PCB - select modern ferrite cores with best performance at specified operating fr ...
... - select proper wire diameter, use copper stripes or litz wire - select low ESR capacitors (for switching applications), as big (dimensions) as possible, connected in parallel, - make wide and thick copper paths on the PCB - select modern ferrite cores with best performance at specified operating fr ...
FOUR UA741 QUAD BIPOLAR OPERATIONAL AMPLIFIERS
... gain internally compensated, low power operational amplifiers which have been designed to provide functional characteristics identical to those of the familiar UA741 operational amplifier. In addition the total supply current for all four amplifiers is compatible to the supply current of a single UA ...
... gain internally compensated, low power operational amplifiers which have been designed to provide functional characteristics identical to those of the familiar UA741 operational amplifier. In addition the total supply current for all four amplifiers is compatible to the supply current of a single UA ...
Electronics
... 1. forward bias（P is positive and N is nagative） the current flow is significant 2. reverse bias（ P is nagative and N is positive ） the current flow is very small ...
... 1. forward bias（P is positive and N is nagative） the current flow is significant 2. reverse bias（ P is nagative and N is positive ） the current flow is very small ...
IES - Intro and MCU Design
... – Wall - Need to drop 120 VAC to 5 VDC, use big power supply – Transformer-based – Switching ...
... – Wall - Need to drop 120 VAC to 5 VDC, use big power supply – Transformer-based – Switching ...
Electronic Troubleshooting
... • When an amplifier deliverers more than a few milliwatts • Often drives low impedance loads such as speakers ...
... • When an amplifier deliverers more than a few milliwatts • Often drives low impedance loads such as speakers ...
Switched-mode power supply
A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.