Switched-mode power supply
... with a DC input does not require this stage. In some power supplies (mostly computer ATX power supplies), the rectifier circuit can be configured as a voltage doubler by the addition of a switch operated either manually or automatically. This feature permits operation from power sources that are nor ...
... with a DC input does not require this stage. In some power supplies (mostly computer ATX power supplies), the rectifier circuit can be configured as a voltage doubler by the addition of a switch operated either manually or automatically. This feature permits operation from power sources that are nor ...
Aalborg Universitet
... dynamic and simplicity, the deadbeat current control has some limitations, especially when it is applied to a SCR unit. In this paper those issues with a possible solution have been addressed. Finally, the current modulator is synchronized with the grid based on a common Phase-Locked-Loop (PLL) appl ...
... dynamic and simplicity, the deadbeat current control has some limitations, especially when it is applied to a SCR unit. In this paper those issues with a possible solution have been addressed. Finally, the current modulator is synchronized with the grid based on a common Phase-Locked-Loop (PLL) appl ...
Microcontroller PI Treasure Hunter
... The use of a microcontroller I.C. (IC5) has allowed all of the vital pulse timing to be optimised, and set in software during development. All of the timing is set by division from the 4MHz microcontroller clock and so is extremely accurate and free fro m jitter and drift which would otherwise appea ...
... The use of a microcontroller I.C. (IC5) has allowed all of the vital pulse timing to be optimised, and set in software during development. All of the timing is set by division from the 4MHz microcontroller clock and so is extremely accurate and free fro m jitter and drift which would otherwise appea ...
Troubleshooting Techniques
... input voltage will never exceed the output, the device will remain in one of its saturated states. ...
... input voltage will never exceed the output, the device will remain in one of its saturated states. ...
Speed Checker for Highways
... no conductor is 100% efficient. To control the electron flow (current) in a predictable manner, we use resistors. Electronic circuits use calibrated lumped resistance to control the flow of current. Broadly speaking, resistor can be divided into two groups viz. fixed & adjustable (variable) resistor ...
... no conductor is 100% efficient. To control the electron flow (current) in a predictable manner, we use resistors. Electronic circuits use calibrated lumped resistance to control the flow of current. Broadly speaking, resistor can be divided into two groups viz. fixed & adjustable (variable) resistor ...
Article PDF - Power Transmission Engineering
... For centrifugal loads like fans and pumps, the flux in the motor can be altered to follow a square function. By doing this, the power consumed by the motor becomes a cubic function of speed (P∝f 3) enabling significant energy savings. Even if the V/f is held constant in these types of applications, ...
... For centrifugal loads like fans and pumps, the flux in the motor can be altered to follow a square function. By doing this, the power consumed by the motor becomes a cubic function of speed (P∝f 3) enabling significant energy savings. Even if the V/f is held constant in these types of applications, ...
Product Data Sheet - Vectron International
... 1. The VC-707 power supply pin should be filtered, eg, a 0.1 and 0.01uf capacitor. 2. See Standard Frequencies and Ordering Information for more information. 3. Includes calibration tolerance, operating temperature, supply voltage variations,, aging and IR reflow. 4. Figure 2 defines these parameter ...
... 1. The VC-707 power supply pin should be filtered, eg, a 0.1 and 0.01uf capacitor. 2. See Standard Frequencies and Ordering Information for more information. 3. Includes calibration tolerance, operating temperature, supply voltage variations,, aging and IR reflow. 4. Figure 2 defines these parameter ...
RA18H1213G <Silicon RF Power Modules > RoHS Compliance , DESCRIPTION
... 2.RA series products (RF power amplifier modules) and RD series products (RF power transistors) are designed for consumer mobile communication terminals and were not specifically designed for use in other applications. In particular, while these products are highly reliable for their designed purpos ...
... 2.RA series products (RF power amplifier modules) and RD series products (RF power transistors) are designed for consumer mobile communication terminals and were not specifically designed for use in other applications. In particular, while these products are highly reliable for their designed purpos ...
Selecting APU Power Wire
... used as the reference for this document. Due to the inherent resistance of electrical wire, the voltage at the load end of the wire will be lower than the voltage at the supply end. How much lower depends on the resistance and the length of the specific wire in question as well as the amount of curr ...
... used as the reference for this document. Due to the inherent resistance of electrical wire, the voltage at the load end of the wire will be lower than the voltage at the supply end. How much lower depends on the resistance and the length of the specific wire in question as well as the amount of curr ...
The $ensible Sound - Panamax MAX® 5510 AC Regenerator A/V
... outlets. Both are switchable between 0, 10, and 30 seconds. Two telephone jacks are provided, one in and one out. These are for telephone lines or pay-per-view type (or TiVo) surge protection, and are on the right side of the rear panel. Above them are six coaxial jacks. Two of these gold plated FCo ...
... outlets. Both are switchable between 0, 10, and 30 seconds. Two telephone jacks are provided, one in and one out. These are for telephone lines or pay-per-view type (or TiVo) surge protection, and are on the right side of the rear panel. Above them are six coaxial jacks. Two of these gold plated FCo ...
CT425 PID Temperature Controller
... Method: Determines if the PID coefficients (Kp, Ki, Kd) will be entered manually by the user, or if they will be automatically generated from Autotune data by one of several algorithms. The information gained from an Autotune procedure is saved so the Method may be changed later by the user. As with ...
... Method: Determines if the PID coefficients (Kp, Ki, Kd) will be entered manually by the user, or if they will be automatically generated from Autotune data by one of several algorithms. The information gained from an Autotune procedure is saved so the Method may be changed later by the user. As with ...
Part I - Indian Navy
... ships is improved by use of refrigeration systems and air conditioning units. This chapter covers basic thumb rules of electricity and essential electrical machines that are used at various locations on a ship. 1.1.3. The functioning of electrical machines can be Remember: LM-RGi.e explained using t ...
... ships is improved by use of refrigeration systems and air conditioning units. This chapter covers basic thumb rules of electricity and essential electrical machines that are used at various locations on a ship. 1.1.3. The functioning of electrical machines can be Remember: LM-RGi.e explained using t ...
Evaluates: MAX6948B MAX6948 Evaluation Kit General Description Features
... Search for the best driver for your device option. Specify the location of the device driver to be C:\Program Files\MAX6948 (default installation ...
... Search for the best driver for your device option. Specify the location of the device driver to be C:\Program Files\MAX6948 (default installation ...
5-0 - Amateur Radio Equipment
... transmitter harmonic emission B. Precise tone transmissions used to limit repeater access to only certain signals C. A primary transformer tuner use to match antennas D. The push to talk function which switches between receive and transmit ...
... transmitter harmonic emission B. Precise tone transmissions used to limit repeater access to only certain signals C. A primary transformer tuner use to match antennas D. The push to talk function which switches between receive and transmit ...
F42012733
... transformer (iSr_n). (f) Source current (iS_abc). (g) Load current (i). (h) Shunt L_abc compensating current (iSh_abc). (i) Current flowing through load neutral wire (iL_n). (j) Shunt neutral compensating current (iSh_n). power demands. The resulting load current profile shown in Fig. 6(g) has THD of ...
... transformer (iSr_n). (f) Source current (iS_abc). (g) Load current (i). (h) Shunt L_abc compensating current (iSh_abc). (i) Current flowing through load neutral wire (iL_n). (j) Shunt neutral compensating current (iSh_n). power demands. The resulting load current profile shown in Fig. 6(g) has THD of ...
Analysis and Performance Comparison of Different Power
... to critical loads, temporary connection or disconnection of loads, faults in conventional power stations, etc. The energy storage system must provide or absorb the energy needed to fill this gap and keep the frequency stable. Existing technology tries to maintain several conventional power stations ...
... to critical loads, temporary connection or disconnection of loads, faults in conventional power stations, etc. The energy storage system must provide or absorb the energy needed to fill this gap and keep the frequency stable. Existing technology tries to maintain several conventional power stations ...
Opti Information
... Check for voltage with an ST-125 (25K to fire this is an excellent test when checking for a misfire The ignition system may be providing enough voltage to run the engine but not enough to fire the spark plugs under heavy load). Resulting in a misfire. Since the ST-125 requiers 25,000 volts to fire i ...
... Check for voltage with an ST-125 (25K to fire this is an excellent test when checking for a misfire The ignition system may be providing enough voltage to run the engine but not enough to fire the spark plugs under heavy load). Resulting in a misfire. Since the ST-125 requiers 25,000 volts to fire i ...
SUNYUAN SZ ISO Series Analog signal Isolation Transmitter The
... equipments like in machine, machine tools, etc. Analog sensor transforms different physical quantities (e.g.:pressure, flow rate, temperature) into analog quantities (4-20mA current/ 1-5V voltage). Analog sensor as the analog input module usually used in process control to input signal. Digital sens ...
... equipments like in machine, machine tools, etc. Analog sensor transforms different physical quantities (e.g.:pressure, flow rate, temperature) into analog quantities (4-20mA current/ 1-5V voltage). Analog sensor as the analog input module usually used in process control to input signal. Digital sens ...
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.