Sensor-less Three-phase Brushless DC Motor Controller
... running at a pre-defined fixed duty cycle of 25%, 50%, 75% or 100%. ...
... running at a pre-defined fixed duty cycle of 25%, 50%, 75% or 100%. ...
Integrated Analog and Digital Power Supply for remote - iC-Haus
... an input voltage range of e.g. 12 to 36 V and output voltage of 5 V they have an undesirably high power dissipation. This can be reduced by the upstream of a DC/DC converter; however it increases the voltage supply’s space requirement on the PCB. If two linear regulators with different output voltag ...
... an input voltage range of e.g. 12 to 36 V and output voltage of 5 V they have an undesirably high power dissipation. This can be reduced by the upstream of a DC/DC converter; however it increases the voltage supply’s space requirement on the PCB. If two linear regulators with different output voltag ...
MAX15050/MAX15051 High-Efficiency, 4A, 1MHz, Step-Down Regulators General Description
... to 5.5V, making them ideal for on-board point-of-load and postregulation applications. Total output-voltage accuracy is within ±1% over load, line, and temperature. The MAX15050/MAX15051 feature 1MHz fixed-frequency PWM operation. The MAX15050 features pulse-skip mode to improve light-load efficienc ...
... to 5.5V, making them ideal for on-board point-of-load and postregulation applications. Total output-voltage accuracy is within ±1% over load, line, and temperature. The MAX15050/MAX15051 feature 1MHz fixed-frequency PWM operation. The MAX15050 features pulse-skip mode to improve light-load efficienc ...
CHAPTER 5: SYSTEM INTEGRATION
... 2. Eye overshoot/undershoot: measure of the peak distortion 3. Eye width: measure of timing synchronization & jitter effects Figure 5.19 shows the modified eye diagram for the system if no noise or fading is present. Figure 5.20 shows the modified eye diagram if only fading with variance 0.25 and sa ...
... 2. Eye overshoot/undershoot: measure of the peak distortion 3. Eye width: measure of timing synchronization & jitter effects Figure 5.19 shows the modified eye diagram for the system if no noise or fading is present. Figure 5.20 shows the modified eye diagram if only fading with variance 0.25 and sa ...
CCNA1 Module 4 Powerpoint
... White Noise affects all transmission frequencies equally. Narrowband Interference affects a small ranges of frequencies. ...
... White Noise affects all transmission frequencies equally. Narrowband Interference affects a small ranges of frequencies. ...
a review paper on mitigation of power quality issues in
... specifications for utility connection. The DSTATCOM can fulfill the following points. 1. The result of poor load power factor such that the current drawn from the supply has a near unity power factor. 2. The result of harmonic contents in loads such that current drawn from the supply is sinusoidal. ...
... specifications for utility connection. The DSTATCOM can fulfill the following points. 1. The result of poor load power factor such that the current drawn from the supply has a near unity power factor. 2. The result of harmonic contents in loads such that current drawn from the supply is sinusoidal. ...
Pressure regulator circuit description
... Note that this figure remains the same, regardless of the zero pressure offset figure. This means that there is a very simple way to adjust the gain for the correct slope. First, with the sensor connected but NO pressure applied, adjust P2 (level shift) to a reading of 0.00, as described above. Then ...
... Note that this figure remains the same, regardless of the zero pressure offset figure. This means that there is a very simple way to adjust the gain for the correct slope. First, with the sensor connected but NO pressure applied, adjust P2 (level shift) to a reading of 0.00, as described above. Then ...
A Novel Continuous-Time Common
... A continuous-time CMFB circuit is presented. The technique used to estimate CM level is based on the monitoring of VT variation due to bulk signal equal to output voltage of the main amplifier. Because of integrating the averaging, comparing and amplifying units in a single block and using an invert ...
... A continuous-time CMFB circuit is presented. The technique used to estimate CM level is based on the monitoring of VT variation due to bulk signal equal to output voltage of the main amplifier. Because of integrating the averaging, comparing and amplifying units in a single block and using an invert ...
Pressure regulator circuit description
... Its output is de-coupled by C6 (1n) and fed through resistor R1 (10k), to the inverting (-) input (pin 6) of IC1B (LM324), a unity gain inverting amplifier. R1 and R3, both 10k, set the gain to -1 (unity) and R2 (5.1k) sets the input current of the non-inverting (+) input (pin 5) approx. equal to th ...
... Its output is de-coupled by C6 (1n) and fed through resistor R1 (10k), to the inverting (-) input (pin 6) of IC1B (LM324), a unity gain inverting amplifier. R1 and R3, both 10k, set the gain to -1 (unity) and R2 (5.1k) sets the input current of the non-inverting (+) input (pin 5) approx. equal to th ...
THREE–PHASE SYSTEMS 1. A balanced Y–connected source with
... a. What –connected capacitor bank must be connected in parallel with the load of Problem 7 to achieve pf = 1? Assume the line voltage remains unchanged b. Repeat, but for a Y–connected bank 9. A balanced load absorbs 360kW at pf = 0.8, lagging. If the load is fed by a balanced source via a power–di ...
... a. What –connected capacitor bank must be connected in parallel with the load of Problem 7 to achieve pf = 1? Assume the line voltage remains unchanged b. Repeat, but for a Y–connected bank 9. A balanced load absorbs 360kW at pf = 0.8, lagging. If the load is fed by a balanced source via a power–di ...
MAX8532 Low-Noise, Low-Dropout, 200mA Linear Regulator in UCSP General Description
... transistor. A P-channel MOSFET provides several advantages over similar designs using PNP pass transistors, including longer battery life. It requires no base drive, reducing quiescent current. PNP-based regulators waste considerable current in dropout when the pass transistor saturates and also use ...
... transistor. A P-channel MOSFET provides several advantages over similar designs using PNP pass transistors, including longer battery life. It requires no base drive, reducing quiescent current. PNP-based regulators waste considerable current in dropout when the pass transistor saturates and also use ...
MLX81106/7/8/9
... Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent ...
... Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent ...
Automatic power factor controllers DCRL series
... residual power of the steps which is compared with the original power programmed in main menu. When the percentage results to be below the threshold set, the relative alarm is tripped. ...
... residual power of the steps which is compared with the original power programmed in main menu. When the percentage results to be below the threshold set, the relative alarm is tripped. ...
Sheet (3) Transformers
... 1) A transformer has turns ratio of 5. If a 100 Ω resistor is connected across the secondary, what is the resistance referred to the primary? If the same resistor is instead connected across the primary, what is its resistance referred to the secondary? 2) The parameters of the equivalent of a trans ...
... 1) A transformer has turns ratio of 5. If a 100 Ω resistor is connected across the secondary, what is the resistance referred to the primary? If the same resistor is instead connected across the primary, what is its resistance referred to the secondary? 2) The parameters of the equivalent of a trans ...
frequency
... • Microprocessor relays use algorithms that process the sampled and digitized values of the system voltage to estimate the frequency • These techniques are adversely affected by the presence of harmonics in the signals. Also, they may take from 50 ms to few seconds to provide accurate estimates of ...
... • Microprocessor relays use algorithms that process the sampled and digitized values of the system voltage to estimate the frequency • These techniques are adversely affected by the presence of harmonics in the signals. Also, they may take from 50 ms to few seconds to provide accurate estimates of ...
ELEC 2020 EXPERIMENT 11
... An inverter circuit outputs a voltage representing the opposite logic-level to its input. Inverters can be constructed using a single NMOS transistor or a single PMOS transistor coupled with a resistor. Digital inverter quality is often measured using the Voltage Transfer Curve, which is a plot of i ...
... An inverter circuit outputs a voltage representing the opposite logic-level to its input. Inverters can be constructed using a single NMOS transistor or a single PMOS transistor coupled with a resistor. Digital inverter quality is often measured using the Voltage Transfer Curve, which is a plot of i ...
power transistors
... UNIT-2 POWER TRANSISTORS Power transistors are devices that have controlled turn-on and turn-off characteristics. These devices are used a switching devices and are operated in the saturation region resulting in low on-state voltage drop. They are turned on when a current signal is given to base or ...
... UNIT-2 POWER TRANSISTORS Power transistors are devices that have controlled turn-on and turn-off characteristics. These devices are used a switching devices and are operated in the saturation region resulting in low on-state voltage drop. They are turned on when a current signal is given to base or ...
Sheet (2) Transformers 1) A transformer has a turns ratio of 5. if a
... the primary? If the same resistor is instead connected across the primary, what is its resistance referred to the secondary? 2) The parameters of the equivalent of a transformer, having a turns ratio of 5, are R1=0.5Ω, R2=0.021Ω, X1=3.2Ω, X2=0.12Ω, Rc=350Ω referred to primary, and Xm=98Ω referred to ...
... the primary? If the same resistor is instead connected across the primary, what is its resistance referred to the secondary? 2) The parameters of the equivalent of a transformer, having a turns ratio of 5, are R1=0.5Ω, R2=0.021Ω, X1=3.2Ω, X2=0.12Ω, Rc=350Ω referred to primary, and Xm=98Ω referred to ...
I Introduction to Real-time Applications
... with other components in the dynamical system. For instance, the device that provides means to interface with the external signals is called the General-Purpose Input Output – GPIO. GPIOs are circuits that handle input and output signals - digital (two voltage level) and analog (continuous voltage). ...
... with other components in the dynamical system. For instance, the device that provides means to interface with the external signals is called the General-Purpose Input Output – GPIO. GPIOs are circuits that handle input and output signals - digital (two voltage level) and analog (continuous voltage). ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.