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Chapter 3. LOAD ELECTRICAL CHARACTERISTICS 3.1 Fixed
Chapter 3. LOAD ELECTRICAL CHARACTERISTICS 3.1 Fixed

... provided by manufacturers. More often, data must be read from a single performance curve which relates pressure (head), flowrate, efficiency, and speed. Therefore, the nonlinear shape of motor/pump I-V curves must be approximated by a number of separate straight line segments. The endpoints of each ...
AD9709 数据手册DataSheet 下载
AD9709 数据手册DataSheet 下载

general catalog
general catalog

Low Input Voltage Step-Up Converter in Thin SOT
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... below the typical undervoltage lockout threshold. This function is implemented in order to prevent malfunctioning of the converter. ...
Ultra Low Power Stable On-Chip Clock Source
Ultra Low Power Stable On-Chip Clock Source

... A typical BSN operation constitutes a short burst of activity followed by a long idle time. The total power consumption of a BSN is often dictated by the power consumed in the idle mode. A clock source is often the only functional circuit in the idle mode. It is used for time keeping for “wake up” a ...
Evaluates:  MAX5069A MAX5069A Evaluation Kit General Description Features
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... The MAX5069A EV kit is a 120W, isolated, push-pull DC-DC converter that provides +12V at up to 10A output. The circuit can be powered from a 36V to 72V DC source. The user should supply an additional 330µF bulk storage capacitor between the input terminals (+VIN, -VIN). This capacitor should be rate ...
MTD5P06V 5V - Red Rock Energy
MTD5P06V 5V - Red Rock Energy

... “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ...
WT Series & PZ Power Analyzer WT series & PZ WT3000 WT500
WT Series & PZ Power Analyzer WT series & PZ WT3000 WT500

... with the specialized knowledge and up-to-date information required to periodically review the contents of the standards and perform the standards conformance tests. The model 761922 Harmonic/Flicker Measurement Software enables engineers without specialized knowledge to perform a range of operations ...
ESD Protection for Portable Electronic Products Tech Note
ESD Protection for Portable Electronic Products Tech Note

... however This shock does not cause any harm to our bodies, But could cause severe damage to electronic devices. Damage due to ESD is estimated to cost the electronic industry billions of dollars each year, and this damage is not limited to the manufacturing cost, but also impacts machinery downtime a ...
Dual Differential Line Driver With 3-State Outputs
Dual Differential Line Driver With 3-State Outputs

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Delphi NC Series Non-Isolated Point of Load DC
Delphi NC Series Non-Isolated Point of Load DC

... The Delphi NC Series, 12V input, single output, non-isolated point of load DC/DC converters are the latest offering from a world leader in power systems technology and manufacturing ― Delta Electronics, Inc. This product family provides up to 60A of power in a vertical or horizontal mounted through- ...
Chapter 4 – Typical application circuits
Chapter 4 – Typical application circuits

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AP3105NA/NV/NL/NR Description Pin Assignments
AP3105NA/NV/NL/NR Description Pin Assignments

... comparator is disabled and the gate driver can not be switched off. At the time of turning on the MOSFET, a negative undershoot (maybe larger than -0.3V) can occur on the SENSE pin. So it is strongly recommended to add a small RC filter or at least connect a resistor “R” on this pin to protect the I ...
BabyBully Servo Amplifier
BabyBully Servo Amplifier

... stalled motor conditions by installing a fuse and switch in series with the orange wire, even when just experimenting. With a centered mechanical load the quiescent current drain is about 25mA. However your fuse will have to be sized according to the starting current requirements of your motor. The ...
MAX5885 3.3V, 16-Bit, 200Msps High Dynamic Performance DAC with CMOS Inputs General Description
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... (IOUTP, IOUTN) that can be operated in a singleended or differential configuration. A load resistor can convert these two output currents into complementary single-ended output voltages. The differential voltage existing between IOUTP and IOUTN can also be converted to a single-ended voltage using a ...
LT1511 - Constant-Current/ Constant-Voltage
LT1511 - Constant-Current/ Constant-Voltage

frydaddy - Hagerman Audio Labs
frydaddy - Hagerman Audio Labs

... no circumstances shall Hagerman Audio Labs be liable for any loss, direct, indirect, incidental, special, or consequential damage arising out of or in connection with the use of this product. Hagerman Audio Labs PO Box 61911 Honolulu, HI 96839 ...
edc-module_iib-three_phase_im
edc-module_iib-three_phase_im

... rotor will appear stationary to the rotating magnetic field and the rotating magnetic field will not cut the rotor. So, no induced current will flow in the rotor and no rotor magnetic flux will be produced so no torque is generated and the rotor speed will fall below the synchronous speed – When the ...
TBS CORE PNP PRO - Team BlackSheep
TBS CORE PNP PRO - Team BlackSheep

... The TBS CORE PRO is the progression of our CORE PNP system. It now supports GPS to help navigation and a new range of TBS telemetry modules to take your FPV experience to the next level. We are leveraging some of the same core components we used in the earlier CORE series and our TBS DISCOVERY PRO m ...
Texas Instruments
Texas Instruments

... The maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(max) − TA)/θJA. If this dissipation is exceeded, the die temperature will rise above 150°C and the LM2941 will go into thermal shutdown. If the TO-263 p ...
Brochure - Controlled Power Company
Brochure - Controlled Power Company

... The most cost-effective emergency lighting applications allow for independent activation of “Normally Off” fixtures in multi-floor or multi-use facilities. The UltraLITE uses ZoneSaver-2TM to monitor normal lighting circuit panels for each floor / zone. Loss of power at the normal lighting circuit p ...
This application note explains the benefits of using the voltage-identification technique to reduce power consumption and system costs.
This application note explains the benefits of using the voltage-identification technique to reduce power consumption and system costs.

II 777 HVR SP B Installation Instructions
II 777 HVR SP B Installation Instructions

... LV/HV- The recommended settings for "LV" (low voltage) and "HV" (high voltage) depend on many factors such as motor usage, motor size, environmental factors and tolerance of the motor. The motor manufacturer should be consulted for "HV" and "LV" settings. However, the NEMA MG1 standard recommends th ...
LM4950 7.5W Mono-BTL or 3.1W Stereo Audio
LM4950 7.5W Mono-BTL or 3.1W Stereo Audio

... Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4950 does not require bootstrap capacitors or snubber circuits. Therefore, it is ideally suited for display applications requiring high power and minimal ...
PIN, Limiter, Schottky, Varactor Diodes
PIN, Limiter, Schottky, Varactor Diodes

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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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