File - Smith-Root
... frequencies. Each duty cycle can be used with each frequency. This allows for 196 standard pulse mode options with duty cycles between 10% and 80% and frequencies between 5 and 120 Hz. The CPS modes have 3 pulses per burst and 6 pulses per burst options that work in combination with designated frequ ...
... frequencies. Each duty cycle can be used with each frequency. This allows for 196 standard pulse mode options with duty cycles between 10% and 80% and frequencies between 5 and 120 Hz. The CPS modes have 3 pulses per burst and 6 pulses per burst options that work in combination with designated frequ ...
Vision™ OPLC™ V350-35-TR6/V350-J-TR6 Installation
... Allow for voltage drop and noise interference with I/O lines used over an extended distance. Use wire that is properly sized for the load. The controller and I/O signals must be connected to the same 0V signal. ...
... Allow for voltage drop and noise interference with I/O lines used over an extended distance. Use wire that is properly sized for the load. The controller and I/O signals must be connected to the same 0V signal. ...
Glossary of AV Industry Terms — From the InfoComm AV Installation
... differential-mode - refers to either noise or surge voltage disturbances occurring between the power hot and the neutral conductor. Most differential mode disturbances result from load switching within a building, with motor type loads being the biggest contributor. diffusion - the scattering or ran ...
... differential-mode - refers to either noise or surge voltage disturbances occurring between the power hot and the neutral conductor. Most differential mode disturbances result from load switching within a building, with motor type loads being the biggest contributor. diffusion - the scattering or ran ...
Smart Lowside Power Switch HITFET BSP 75N
... logic level input, an open drain DMOS output stage and integrated protection functions. It is designed for all kind of resistive and inductive loads (relays, solenoid) in automotive and industrial applications. Protection Functions • Over voltage protection: An internal clamp limits the output volta ...
... logic level input, an open drain DMOS output stage and integrated protection functions. It is designed for all kind of resistive and inductive loads (relays, solenoid) in automotive and industrial applications. Protection Functions • Over voltage protection: An internal clamp limits the output volta ...
AP5100 - Diodes Incorporated
... increase. The Current Sense Amplifier senses and amplifies the inductor current. Since the current mode control is subject to sub-harmonic oscillations that peak at half the switching frequency, Ramp slope compensation is utilized. This will help to stabilize the power supply. This Ramp compensation ...
... increase. The Current Sense Amplifier senses and amplifies the inductor current. Since the current mode control is subject to sub-harmonic oscillations that peak at half the switching frequency, Ramp slope compensation is utilized. This will help to stabilize the power supply. This Ramp compensation ...
AN1336
... Inadvertent or unexpected loss of power can cause a number of system level problems. Memory loss, uncontrolled program status and indeterminate processor state are just a few of the issues which can occur during catastrophic power failure. Power-fail recovery is critical for applications created to ...
... Inadvertent or unexpected loss of power can cause a number of system level problems. Memory loss, uncontrolled program status and indeterminate processor state are just a few of the issues which can occur during catastrophic power failure. Power-fail recovery is critical for applications created to ...
LTC4401-1/LTC4401-2 - RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range.
... pulse at the start of the ramp to quickly bring the VPCA/B output to the threshold voltage. This can generally be achieved with DAC programming. The magnitude of the pulse is dependent on the RF amplifier characteristics. Power ramp sidebands and power/time are also a factor when ramping to zero pow ...
... pulse at the start of the ramp to quickly bring the VPCA/B output to the threshold voltage. This can generally be achieved with DAC programming. The magnitude of the pulse is dependent on the RF amplifier characteristics. Power ramp sidebands and power/time are also a factor when ramping to zero pow ...
Wireless Optical PPM Telemetry and the Influence of Lighting Flicker
... PPM are compared in relation to on–off keying. The figure illustrates that for low-power telemetry PPM is much more suitable than on–off keying, especially when the bit rate is low compared to the available channel bandwidth. Further, it appears that transmitter power can be saved at the expense of ...
... PPM are compared in relation to on–off keying. The figure illustrates that for low-power telemetry PPM is much more suitable than on–off keying, especially when the bit rate is low compared to the available channel bandwidth. Further, it appears that transmitter power can be saved at the expense of ...
Voltage Quality Improvement Using Solar Photovoltaic System
... distributed generation come from inverters and some synchronous machines. The Pulse Width Modulation (PWM) switching inverters produce a much lower harmonic current content than the earlier line-commutated, thyristor-based inverters [10]. One new distortion problem that arises with the modern invert ...
... distributed generation come from inverters and some synchronous machines. The Pulse Width Modulation (PWM) switching inverters produce a much lower harmonic current content than the earlier line-commutated, thyristor-based inverters [10]. One new distortion problem that arises with the modern invert ...
isscc2000 sessions
... • Alternative storage technique that uses scanning probe techniques (SPT) and polymethylmethacrylate (PMMA) medium, achieving 200Gb/in2 (compare with today’s HDD with 6Gb/in2) and comparable speed at lower power levels (IBM) • 10ns read and write non-volatile memory (IBM) • Analog filters with suppl ...
... • Alternative storage technique that uses scanning probe techniques (SPT) and polymethylmethacrylate (PMMA) medium, achieving 200Gb/in2 (compare with today’s HDD with 6Gb/in2) and comparable speed at lower power levels (IBM) • 10ns read and write non-volatile memory (IBM) • Analog filters with suppl ...
CIRCUIT FUNCTION AND BENEFITS
... Figure 1 shows the AD5781 configured in a gain-of-two mode such that a single reference source can be used to generate a symmetrical bipolar output voltage range. This mode of operation uses an external op amp (A2), as well as on-chip resistors (see AD5781 data sheet) to provide the gain of two. The ...
... Figure 1 shows the AD5781 configured in a gain-of-two mode such that a single reference source can be used to generate a symmetrical bipolar output voltage range. This mode of operation uses an external op amp (A2), as well as on-chip resistors (see AD5781 data sheet) to provide the gain of two. The ...
1857 Room sensors QFA20..
... Inside wall (not on outside wall!) of the room to be air conditioned; not in recesses, behind curtains, above or close to heat sources or shelves not on walls behind which a chimney is located. The unit must not be exposed to spot lights or direct solar radiation. The unit must not be exposed to spo ...
... Inside wall (not on outside wall!) of the room to be air conditioned; not in recesses, behind curtains, above or close to heat sources or shelves not on walls behind which a chimney is located. The unit must not be exposed to spot lights or direct solar radiation. The unit must not be exposed to spo ...
Photoelectric Effect – Modern Physics Laboratory
... 1. On the same set of axes, plot a graph of the high light intensity data and of the low light intensity data from Procedure steps A5 & A6, using the 435.8 nm filter. For these graphs, plot the photocurrent I as a function of applied voltage V . For each graph, determine the stopping potential. NOTE ...
... 1. On the same set of axes, plot a graph of the high light intensity data and of the low light intensity data from Procedure steps A5 & A6, using the 435.8 nm filter. For these graphs, plot the photocurrent I as a function of applied voltage V . For each graph, determine the stopping potential. NOTE ...
Transformers for Low Voltage Lighting
... The boost tap is designed to compensate for dimming, but can be used to lay longer wire runs instead (see Chart B). N/A indicates that the wire AWG is not rated to handle that load. Optimum lighting performance is achieved by utilizing the appropriate tap. Charts provide the approximate maximum dist ...
... The boost tap is designed to compensate for dimming, but can be used to lay longer wire runs instead (see Chart B). N/A indicates that the wire AWG is not rated to handle that load. Optimum lighting performance is achieved by utilizing the appropriate tap. Charts provide the approximate maximum dist ...
1_Power_parts
... Controlled Thyristor (MCT) is voltage controlled fully controllable thyristor. The MCT is similar in operation with GTO thyristor, but it has voltage controlled insulated gate. It has two MOSFETs in its equivalent circuit. One is responsible for turn-on and the another is responsible for turn-of ...
... Controlled Thyristor (MCT) is voltage controlled fully controllable thyristor. The MCT is similar in operation with GTO thyristor, but it has voltage controlled insulated gate. It has two MOSFETs in its equivalent circuit. One is responsible for turn-on and the another is responsible for turn-of ...
modified coupled-inductor single-stage boost inverter
... zero vectors to store and transfer energy within the unique impedance network, to step up the bus voltage. Turns ratio of the coupled inductor within the impedance network can also be designed to improve the boost gain. So the ac output voltage can be regulated in a wide range and can be stepped up ...
... zero vectors to store and transfer energy within the unique impedance network, to step up the bus voltage. Turns ratio of the coupled inductor within the impedance network can also be designed to improve the boost gain. So the ac output voltage can be regulated in a wide range and can be stepped up ...
Improved Interline Unified Power-Quality Conditioner with
... compensating reference voltages in (15) are then transformed back into the abc reference frame. By using an improved SPWM voltage control technique (since PWM control with minor loop feedback) [8], the output compensation voltage of the series VSC can be obtained. D. Multi-Level Converter Using the ...
... compensating reference voltages in (15) are then transformed back into the abc reference frame. By using an improved SPWM voltage control technique (since PWM control with minor loop feedback) [8], the output compensation voltage of the series VSC can be obtained. D. Multi-Level Converter Using the ...
Open-Loop Torque Boost and Simple Slip Frequency Compensation
... voltage and keeping the magnitude of the stator flux constant. The simple slip frequency compensation, based on an estimation of the air-gap power and a linear torquespeed approximation, is also introduced. This method reduces the steady-state speed error to almost zero. The nameplate data and only ...
... voltage and keeping the magnitude of the stator flux constant. The simple slip frequency compensation, based on an estimation of the air-gap power and a linear torquespeed approximation, is also introduced. This method reduces the steady-state speed error to almost zero. The nameplate data and only ...
Capacitor Start and Capacitor Start/Capacitor
... voltage sensing information which can be used to extract speed data from the voltage across the motor start (auxiliary) winding. By comparing this start (auxiliary) winding RPM-sensitive voltage to the main AC input voltage (which serves as a reference voltage), the switch determines when the start ...
... voltage sensing information which can be used to extract speed data from the voltage across the motor start (auxiliary) winding. By comparing this start (auxiliary) winding RPM-sensitive voltage to the main AC input voltage (which serves as a reference voltage), the switch determines when the start ...
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.