RF - UU Indico
... Failure Rate, FR: Expected number of failures per unit time of operation Mean Time Between Failure, MTBF: Average time that a (repairable) system operates between failures For a system with a constant Failure Rate (FR = λ) Exponential Law ...
... Failure Rate, FR: Expected number of failures per unit time of operation Mean Time Between Failure, MTBF: Average time that a (repairable) system operates between failures For a system with a constant Failure Rate (FR = λ) Exponential Law ...
Line filter, SK HLD 110
... switching on, switching off, isolating, earthing and marking power circuits and devices, proper maintenance and use of protective devices in accordance with defined safety standards. ...
... switching on, switching off, isolating, earthing and marking power circuits and devices, proper maintenance and use of protective devices in accordance with defined safety standards. ...
PS161-6 Power Supply Installation Instructions UL Listings for US
... 7. For Access Control applications batteries are optional. When batteries are not used, a loss of AC will result in the loss of output voltage. Batteries must be lead acid or gel type if used. Use two 12VDC batteries connected in series for 24VDC operation (Battery leads included). 8. Connect batt ...
... 7. For Access Control applications batteries are optional. When batteries are not used, a loss of AC will result in the loss of output voltage. Batteries must be lead acid or gel type if used. Use two 12VDC batteries connected in series for 24VDC operation (Battery leads included). 8. Connect batt ...
LAB MANUAL “Transient Current Technique – A Dynamic
... Particle detectors are devices, or instruments that can detect track, momentum, energy, etc. of the incident particles. There are 3 types of detectors: solid, liquid, gas. Our study is focused on solid semiconductor silicon detectors because of various advantages over liquid and gaseous detectors. T ...
... Particle detectors are devices, or instruments that can detect track, momentum, energy, etc. of the incident particles. There are 3 types of detectors: solid, liquid, gas. Our study is focused on solid semiconductor silicon detectors because of various advantages over liquid and gaseous detectors. T ...
NTE74LS196 Integrated Circuit TTL − Presettable
... consisting of four DC coupled, master−slave flip−flops which are internally interconnected to provide a divide−by−two and a divide−by−five counter. This device is fully programmable; that is, the outputs may be preset to any state by placing a low on the count/load input and entering the desired dat ...
... consisting of four DC coupled, master−slave flip−flops which are internally interconnected to provide a divide−by−two and a divide−by−five counter. This device is fully programmable; that is, the outputs may be preset to any state by placing a low on the count/load input and entering the desired dat ...
AD8300 数据手册DataSheet 下载
... A double buffered serial data interface offers high speed, threewire, DSP and microcontroller compatible inputs using data in (SDI), clock (CLK) and load strobe (LD) pins. A chip select (CS) pin simplifies connection of multiple DAC packages by enabling the clock input when active low. Additionally, ...
... A double buffered serial data interface offers high speed, threewire, DSP and microcontroller compatible inputs using data in (SDI), clock (CLK) and load strobe (LD) pins. A chip select (CS) pin simplifies connection of multiple DAC packages by enabling the clock input when active low. Additionally, ...
A Novel Control Strategy for UPQC under Distorted Source
... concerns due to the wide use of nonlinear loads such as adjustable speed drives, electric arc welders, and switching power supplies in distribution systems. The nonlinear loads cause the harmonic currents into the networks and consequently distort the voltage waveform at the point of common coupling ...
... concerns due to the wide use of nonlinear loads such as adjustable speed drives, electric arc welders, and switching power supplies in distribution systems. The nonlinear loads cause the harmonic currents into the networks and consequently distort the voltage waveform at the point of common coupling ...
Evaluates: MAX17112 MAX17112 Evaluation Kit General Description Features
... with a 4.5V input. The step-up switching regulator output voltage can be adjusted from VIN to 20V by changing the values of the feedback resistors (see the Evaluating Other Output Voltages section). The MAX17112 EV kit can operate from a 2.6V to 5.5V input supply. When input voltage is less than 4.5 ...
... with a 4.5V input. The step-up switching regulator output voltage can be adjusted from VIN to 20V by changing the values of the feedback resistors (see the Evaluating Other Output Voltages section). The MAX17112 EV kit can operate from a 2.6V to 5.5V input supply. When input voltage is less than 4.5 ...
steady and pulsed direct current welding with a single three
... The major sources of heating contact - tube were the voltage drop between the contact tube and electrode and radiation from the arc with major heat loss occurring through conduction to the gun body. The contact tubes often reached (300) C0 with the air-cooled gun and the temperatures reached a plate ...
... The major sources of heating contact - tube were the voltage drop between the contact tube and electrode and radiation from the arc with major heat loss occurring through conduction to the gun body. The contact tubes often reached (300) C0 with the air-cooled gun and the temperatures reached a plate ...
optical - Warmly Welcome To Bundle of My Wisdom Nifrash
... Pulse Width and Pulse Position Modulation • Figure 11-12 shows a PWM modulator. This circuit is simply a high-gain comparator that is switched on and off by the sawtooth waveform derived from a very stable-frequency oscillator. • Notice that the output will go to +Vcc the instant the analog signal ...
... Pulse Width and Pulse Position Modulation • Figure 11-12 shows a PWM modulator. This circuit is simply a high-gain comparator that is switched on and off by the sawtooth waveform derived from a very stable-frequency oscillator. • Notice that the output will go to +Vcc the instant the analog signal ...
Position Paper on IEEE Task Force on Insulator Icing Test
... verification of performance tests on power supplies employed in AC Insulator Artificial Icing Tests. • An AC single phase power supply shall provide reproducible and reliable test data. ...
... verification of performance tests on power supplies employed in AC Insulator Artificial Icing Tests. • An AC single phase power supply shall provide reproducible and reliable test data. ...
optical
... Pulse Width and Pulse Position Modulation • Figure 11-12 shows a PWM modulator. This circuit is simply a high-gain comparator that is switched on and off by the sawtooth waveform derived from a very stable-frequency oscillator. • Notice that the output will go to +Vcc the instant the analog signal ...
... Pulse Width and Pulse Position Modulation • Figure 11-12 shows a PWM modulator. This circuit is simply a high-gain comparator that is switched on and off by the sawtooth waveform derived from a very stable-frequency oscillator. • Notice that the output will go to +Vcc the instant the analog signal ...
BDTIC F3 PWM controller ICE3BS03LJG
... maximum power limitation can be avoided together with the integrated Propagation Delay Compensation. Therefore the maximum power is nearly independent on the input voltage, which is required for wide range SMPS. Thus there is no need for the over-sizing of the SMPS, e.g. the transformer and the outp ...
... maximum power limitation can be avoided together with the integrated Propagation Delay Compensation. Therefore the maximum power is nearly independent on the input voltage, which is required for wide range SMPS. Thus there is no need for the over-sizing of the SMPS, e.g. the transformer and the outp ...
20, 40, and 60 Bit I/O Expander with EEPROM
... output (INT) and can be connected to the interrupt logic of the system master. This signal can inform the system master that there is incoming data on its ports or that the PWM output state was changed. The EEPROM is byte readable and supports byte-by-byte writing. A pin can be configured as an EEPR ...
... output (INT) and can be connected to the interrupt logic of the system master. This signal can inform the system master that there is incoming data on its ports or that the PWM output state was changed. The EEPROM is byte readable and supports byte-by-byte writing. A pin can be configured as an EEPR ...
Final Presentation
... • Uses a MOSFET as a voltage controlled electrical switch • Also uses a MOSFET driver in order to have the MSP430G2553 control the switching of the MOSFETs • Each pump has its own MOSFET and MOSFET driver circuit to control the cycling off or on • Signal is produced by the MSP430 to control the diff ...
... • Uses a MOSFET as a voltage controlled electrical switch • Also uses a MOSFET driver in order to have the MSP430G2553 control the switching of the MOSFETs • Each pump has its own MOSFET and MOSFET driver circuit to control the cycling off or on • Signal is produced by the MSP430 to control the diff ...
AN-1533 Over Voltage Protection Circuit for
... avalanche diodes and MOVs. The difficulty with the shunt approach is that large amounts of energy may have to be absorbed. Shunt approaches can also be unattractive if there is a requirement to provide continuous protection while in an over voltage condition (as occurs with double battery). ...
... avalanche diodes and MOVs. The difficulty with the shunt approach is that large amounts of energy may have to be absorbed. Shunt approaches can also be unattractive if there is a requirement to provide continuous protection while in an over voltage condition (as occurs with double battery). ...
Test System Signal Switching
... electrical field is generated between them, which can initiate an arc. An arc also can form when these contacts open. This is particularly true if the load being switched is inductive. Arcing, and the associated welding of contacts, affects relay contact reliability and life span. Other factors that ...
... electrical field is generated between them, which can initiate an arc. An arc also can form when these contacts open. This is particularly true if the load being switched is inductive. Arcing, and the associated welding of contacts, affects relay contact reliability and life span. Other factors that ...
MIT-240 Lab#7 - Analog to Digital
... to the Analog input of the Arduino. An excess voltage will damage the Arduino. 6. Apply power and test the circuit. Set the potentiometer so that the analog input is just about 4.88mV. The Serial Monitor should indicate a RAW A/D count of 1 and a voltage level of 4.88mV. If necessary, adjust the pot ...
... to the Analog input of the Arduino. An excess voltage will damage the Arduino. 6. Apply power and test the circuit. Set the potentiometer so that the analog input is just about 4.88mV. The Serial Monitor should indicate a RAW A/D count of 1 and a voltage level of 4.88mV. If necessary, adjust the pot ...
... the impact of large current to the MOSFETs emerges according to (8) if the device is operated under high-power output. Decreasing the charging power will help ease the current impact but increase charging time. Meanwhile to charge the battery with trickling current at low voltage can also be helpful ...
HDO4000 High Definition Oscilloscopes (200 MHz
... Simplify Analysis of FFT Power Spectrum Get better insight to the frequency content of any signal with use of the Spectrum Analyzer mode on the HDO4000. This mode provides a spectrum analyzer style user interface with controls for start/stop frequency or center frequency and span. The resolution ban ...
... Simplify Analysis of FFT Power Spectrum Get better insight to the frequency content of any signal with use of the Spectrum Analyzer mode on the HDO4000. This mode provides a spectrum analyzer style user interface with controls for start/stop frequency or center frequency and span. The resolution ban ...
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.