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Crown Amplifiers Catalog - Langley Sound and Light
Crown Amplifiers Catalog - Langley Sound and Light

... amplifier to the Crown factory or to an authorized Crown service center. High-Pass Filter: A fixed 35-Hz (70-Hz in CTs 4200) high-pass filter per channel pair is automatically inserted when the mode switch is set to either of the constant-voltage settings. The high-pass filter corner frequency in th ...
Basics For Practical Operation Motor Starting Notes
Basics For Practical Operation Motor Starting Notes

A.S. Jurkov, L. Roslaniec, and D.J. Perreault, “Lossless Multi-Way Power Combining and Outphasing for High-Frequency Resonant Inverters,” IEEE Transactions on Power Electronics , Vol. 29, No. 4, pp. 1894-1908, Apr. 2014.
A.S. Jurkov, L. Roslaniec, and D.J. Perreault, “Lossless Multi-Way Power Combining and Outphasing for High-Frequency Resonant Inverters,” IEEE Transactions on Power Electronics , Vol. 29, No. 4, pp. 1894-1908, Apr. 2014.

... degrades rapidly with output power back-off. On the other hand, switched-mode PAs (inverters), e.g., classes D [8-12], E [13, 14], F [15-17], E/F [17,18],  [19], etc., offer high peak efficiency (100% ideally), but at constant supply voltage they can only generate constant envelope signals while re ...
LTC3875 - Dual, 2-Phase, Synchronous Controller with Low Value
LTC3875 - Dual, 2-Phase, Synchronous Controller with Low Value

... Note 4: The LTC3875 is tested in a feedback loop that servos VITH1,2 to a specified voltage and measures the resultant VOSNS1,2+. Note 5: Dynamic supply current is higher due to the gate charge being delivered at the switching frequency. See Applications Information. Note 6: Rise and fall times are ...
30V Internal Switch LCD Bias Supply MAX1605
30V Internal Switch LCD Bias Supply MAX1605

... Design Procedure Inductor Selection Smaller inductance values typically offer smaller physical size for a given series resistance or saturation current. Circuits using larger inductance values may start up at lower input voltages and exhibit less ripple, but also provide reduced output power. This o ...
MAX5253 +3V, Quad, 12-Bit Voltage-Output DAC with Serial Interface __________________General Description
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... with both MICROWIRE (Figure 2) and SPI/QSPI (Figure 3). The serial input word consists of two address bits and two control bits followed by 12 data bits (MSB first), as shown in Figure 4. The 4-bit address/ control code determines the MAX5253’s response outlined in Table 1. The connection between DO ...
SmartWinch - RC
SmartWinch - RC

... In most cases the best circuit for winch, radio and battery is also the simplest as shown in figure 3. In this system there must be no receiver battery connection. Power for receiver is supplied by internal 5 volt regulator. ...
44KB - Yaskawa
44KB - Yaskawa

... N. Starting Torque: 200% starting torque shall be available from 0.3 Hz to 60 Hz. O. Overload capability: 150% of rated FLA (Full Load Amps) for 60 seconds for Heavy Duty applications; 120% of rated FLA for 60 seconds for Normal Duty applications; 200% of rated FLA peak. P. Controlled speed range: 2 ...
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2.1 General Information

... It works bi-directionally: in one direction it converts DC power from the battery to AC power (Inverter Mode) and in the other direction it converts external AC power to DC power to charge the batteries (AC Mode). The same power components are used in both directions, resulting in high-energy transf ...
PAM2309 Description Pin Assignments
PAM2309 Description Pin Assignments

... cell, USB, and other standard power sources. The output voltage is adjustable from 0.6V to the input voltage. All versions employ internal power switch and synchronous rectifier to minimize external part count and realize high efficiency. During shutdown, the input is disconnected from the output an ...
Neutral Switching Transients
Neutral Switching Transients

... It is reasonable to ask about the likelihood of a ground fault occurring during the short time that the neutral contacts are overlapped. Certainly it is as likely as any other time, but perhaps it is slightly more likely during the period of the transition for the following reasons. As those who per ...
Evaluates:  MAX17480 MAX17480 Evaluation Kit General Description Features
Evaluates: MAX17480 MAX17480 Evaluation Kit General Description Features

... (PWRGD). The MAX17480 EV kit consists of one dualphase high-current switched-mode power supply (SMPS) for the CPU core (VCORE0) and one 4A internal switch SMPS for the northbridge (NB) core. The two CPU core SMPSs run 180° out-of-phase for true interleaved operation, minimizing input capacitance. Ou ...
Industrial IGBT Modules Explanation of Technical Information
Industrial IGBT Modules Explanation of Technical Information

... The difference between a preliminary and a final datasheet is, that certain values are still missing, for example the maximum values. These missing values in the preliminary datasheet are marked to be defined (t.b.d.). Modules without ENG on the label reached series production status. All quality re ...
Microwave Oven Technical File
Microwave Oven Technical File

... enable the oven to be run long enough to carry out most tests. If an oven is run for any length of time without a load, then the magnetron will be stressed. This is caused by a back heating effect, and if left too long, eventual damage causing low output will result. Modern magnetrons are fairly tol ...
section 15172
section 15172

... rejected. 6 pulse, passive filters, and 12-pulse rectifiers are not acceptable and will also be rejected. ...
MN225008EN/ Old S225-10-30
MN225008EN/ Old S225-10-30

... The information, recommendations, descriptions and safety notations in this document are based on Eaton Corporation’s (“Eaton”) experience and judgment and may not cover all contingencies. If further information is required, an Eaton sales office should be consulted. Sale of the product shown in thi ...
250-mA DUAL DIFFERENTIAL LINE DRIVER THS6022 FEATURES
250-mA DUAL DIFFERENTIAL LINE DRIVER THS6022 FEATURES

... The THS6022 contains two high-speed drivers capable of providing 200-mA output current (minimum) into a 50-Ω load. These drivers can be configured differentially to drive a 50-V p-p output signal over low-impedance lines. The drivers are current feedback amplifiers, designed for the high slew rates ...
lecture1423726011
lecture1423726011

Sollatek SVS Range Voltage Stabilisers
Sollatek SVS Range Voltage Stabilisers

MAX3243-EP - Texas Instruments
MAX3243-EP - Texas Instruments

... Flexible control options for power management are available when the serial port is inactive. The auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF ...
Application Note 9017 Manufacturing Technology of a Small Capacity Inverter CONTENTS
Application Note 9017 Manufacturing Technology of a Small Capacity Inverter CONTENTS

... cannot be used in the inverters which use large amounts of current. It is used widely in common small capacity inverters. The resistance insertion method senses the entire current at one place and thus, one protection circuit can protect the entire IGBT. Though this feature, which reduces the invert ...
AG#37EM _Imp Features of Stator Slot Insul Systems_
AG#37EM _Imp Features of Stator Slot Insul Systems_

... A very important consideration in the application of Variable Frequency Drives (VFD's) on motors is that of voltage stress on motor winding insulation. VFD's manufacture the AC output waveform from a DC source (which has usually been derived from the incoming AC power source). The inversion from DC ...
MAX985/MAX986/MAX989/ MAX990/MAX993/MAX994 Micropower, Low-Voltage, UCSP/SC70, Rail-to-Rail I/O Comparators
MAX985/MAX986/MAX989/ MAX990/MAX993/MAX994 Micropower, Low-Voltage, UCSP/SC70, Rail-to-Rail I/O Comparators

... 2) Choose the hysteresis band required (VHB). For this example, choose 50mV. 3) Calculate R1 according to the following equation: R1 = R3 x (VHB / VCC) For this example, insert the values R1 = 1.2MΩ x (50mV / 5V) = 12kΩ. 4) Choose the trip point for VIN rising (VTHR; VTHF is the trip point for VIN f ...
Online Full Text
Online Full Text

... material (typically sintered granular zinc oxide) that can conduct large currents (effectively short-circuits) when presented with a voltage above its rated voltage. MOVs typically limit voltages to about 3 to 4 times the normal circuit voltage by diverting surge current elsewhere than the protected ...
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... The master resets are active-HIGH asynchronous inputs to each 4-bit counter identified by the ‘‘1’’ and ‘‘2’’ in the pin description. A HIGH level on the nMR input overrides the clock and sets the outputs LOW. ...
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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.
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