Ch 11
... • The term operational amplifier goes back to the days when op-amp circuits were used to carry out mathematical operations inside an analog computer. • Before digital computers, analog computers could “do the math” by adding, subtracting, multiplying, and dividing voltages that represented numbers. ...
... • The term operational amplifier goes back to the days when op-amp circuits were used to carry out mathematical operations inside an analog computer. • Before digital computers, analog computers could “do the math” by adding, subtracting, multiplying, and dividing voltages that represented numbers. ...
CN-0009 利用AD5662 DAC实现4 mA至20 mA过程控制环路
... 5 V reference, and the circuit requires no external trims because of the tight initial output voltage tolerance of the ADR02 and the low supply current of both the AD8627 and the AD5662. The limits on the allowable loop power supply are set by the ADR02 minimum input voltage (7 V) and maximum input ...
... 5 V reference, and the circuit requires no external trims because of the tight initial output voltage tolerance of the ADR02 and the low supply current of both the AD8627 and the AD5662. The limits on the allowable loop power supply are set by the ADR02 minimum input voltage (7 V) and maximum input ...
Differentiation of Light Sources Using Signal
... two forms of light comes from the nature of their VRXUFHV ÀXRUHVFHQW OLJKWV XVH DOWHUQDWLQJ FXUUHQW as a means for providing lighting, while sunlight is produced by nuclear fusion in a relatively constant amount. Fluorescent light pr ...
... two forms of light comes from the nature of their VRXUFHV ÀXRUHVFHQW OLJKWV XVH DOWHUQDWLQJ FXUUHQW as a means for providing lighting, while sunlight is produced by nuclear fusion in a relatively constant amount. Fluorescent light pr ...
Sampling time
... • the inferred signal does not look like the original signal and hence, not possible to reconstruct the original signal from our samples • This effect is called aliasing in signal processing as shown in the frequency domain figure - where an alias of our original signal spectrum appears near the fre ...
... • the inferred signal does not look like the original signal and hence, not possible to reconstruct the original signal from our samples • This effect is called aliasing in signal processing as shown in the frequency domain figure - where an alias of our original signal spectrum appears near the fre ...
Document
... them, for example: – Specify/Confirm adequate hold-up time for small power supplies – Specify adequate hold-up time for large equipment – Balance the cost of immunity with the frequency and severity of the disturbances – NOTE: The electrical supplier is not required to measure or care about dips sho ...
... them, for example: – Specify/Confirm adequate hold-up time for small power supplies – Specify adequate hold-up time for large equipment – Balance the cost of immunity with the frequency and severity of the disturbances – NOTE: The electrical supplier is not required to measure or care about dips sho ...
GS5802 - Globaltech Semiconductor
... feedback pin. The operation of the GS5802 can be understood by referring to the block diagram. At the start of each oscillator cycle the MOSFET is turned on through the control circuitry. To prevent sub-harmonic oscillations at duty cycles greater than 50 percent, a stabilizing ramp is added to the ...
... feedback pin. The operation of the GS5802 can be understood by referring to the block diagram. At the start of each oscillator cycle the MOSFET is turned on through the control circuitry. To prevent sub-harmonic oscillations at duty cycles greater than 50 percent, a stabilizing ramp is added to the ...
13R-Emerging Applica..
... radiation hardened power supplies and Class-D audio amplifiers. All cases support the rapidly evolving trend of conversion from power MOSFETs to gallium nitride transistors. Thirty years of silicon power-MOSFET development taught us that one of the key variables controlling the adoption rate of a di ...
... radiation hardened power supplies and Class-D audio amplifiers. All cases support the rapidly evolving trend of conversion from power MOSFETs to gallium nitride transistors. Thirty years of silicon power-MOSFET development taught us that one of the key variables controlling the adoption rate of a di ...
60V, 3A Step-Down DC/DC Converter Has Low Dropout and 100µA
... by disabling switching for a number of switch cycles and placing the part briefly in micropower shutdown until switching begins again. Bursts of switch pulses are enough to maintain output voltage regulation at light load. Figure 2 shows that the efficiency is high for nominal loads, between 100mA and ...
... by disabling switching for a number of switch cycles and placing the part briefly in micropower shutdown until switching begins again. Bursts of switch pulses are enough to maintain output voltage regulation at light load. Figure 2 shows that the efficiency is high for nominal loads, between 100mA and ...
Application Note GaAs MMIC Based Control Components with Integral Drivers Introduction
... begins to narrow the channel, increasing the resistance. The voltage that closes off the channel and creates the highest resistance of the MESFET device is known as the “pinch-off” voltage. Pinch-off voltages for M/A-COM MESFETs are typically –2.5 volts. By varying the gate voltage between 0 volts a ...
... begins to narrow the channel, increasing the resistance. The voltage that closes off the channel and creates the highest resistance of the MESFET device is known as the “pinch-off” voltage. Pinch-off voltages for M/A-COM MESFETs are typically –2.5 volts. By varying the gate voltage between 0 volts a ...
A simple way to test buck converter stability
... IC1 is a voltage controlled PWM generator IC. The voltage on the MOD pin sets the PWM duty-cycle, the voltage on the DIV pin sets the frequency range, and the resistor value connected to the SET pin sets the precise frequency. The OUT pin has sufficient driving capability to drive small MOSFETs with ...
... IC1 is a voltage controlled PWM generator IC. The voltage on the MOD pin sets the PWM duty-cycle, the voltage on the DIV pin sets the frequency range, and the resistor value connected to the SET pin sets the precise frequency. The OUT pin has sufficient driving capability to drive small MOSFETs with ...
Development of a Picosecond-resolution TDC for
... the digitization would be done with a 5 GHz 10-bit counter, resulting in a least count of 1 ps. The second design we have simulated is a time-to-amplitude converter (TAC) with a sensitivity of 1mV/ps. The maximum input time interval of 1ns will convert to a 1.0V voltage that is held in a capacitor. ...
... the digitization would be done with a 5 GHz 10-bit counter, resulting in a least count of 1 ps. The second design we have simulated is a time-to-amplitude converter (TAC) with a sensitivity of 1mV/ps. The maximum input time interval of 1ns will convert to a 1.0V voltage that is held in a capacitor. ...
Knowledge Transfer #1 The Avaya Online UPS
... The Online UPS Essentially, there are 9 basic power problems that can damage your telecommunications equipment: How does Avaya’s online UPS prevent these problems from reaching your equipment and Power Failure Power Sags Power Surges deliver clean, regulated power? Brownouts Line noise ...
... The Online UPS Essentially, there are 9 basic power problems that can damage your telecommunications equipment: How does Avaya’s online UPS prevent these problems from reaching your equipment and Power Failure Power Sags Power Surges deliver clean, regulated power? Brownouts Line noise ...
CXA-8 Spec Sheet
... • Flow-through cooling design prevents overheating • Defeatable limiter and high pass filter per channel • Detented 21-position input level control knobs • Front panel LED indication of power, clip protect and signal status ...
... • Flow-through cooling design prevents overheating • Defeatable limiter and high pass filter per channel • Detented 21-position input level control knobs • Front panel LED indication of power, clip protect and signal status ...
Role of Semiconductor Devices in Portable Electronics Power
... recently reported [3]. In the case of DC-DC converters, n-channel power MOSFETs are used with low onresistance as low as 8 mΩ at breakdown voltage of 30V. Devices are optimized for maximum efficiency since at high switching frequencies of about 300 kHz both switching and gate power losses become com ...
... recently reported [3]. In the case of DC-DC converters, n-channel power MOSFETs are used with low onresistance as low as 8 mΩ at breakdown voltage of 30V. Devices are optimized for maximum efficiency since at high switching frequencies of about 300 kHz both switching and gate power losses become com ...
2. - AIUB Solution
... Gain = VO/Vi = 3.2V/300mV = 10.67 Question and Answers : 1. Why do we need capacitors and resistors in this circuit? Capacitors are used to cutoff the dc signal in the transistor amplifier. Resistors are used to restrict the flow of the current. 2. Describe the experiment as a whole? Here the volta ...
... Gain = VO/Vi = 3.2V/300mV = 10.67 Question and Answers : 1. Why do we need capacitors and resistors in this circuit? Capacitors are used to cutoff the dc signal in the transistor amplifier. Resistors are used to restrict the flow of the current. 2. Describe the experiment as a whole? Here the volta ...
Homework 13B
... d) A Y-connected motor in a balanced three-phase system consumes 30 kW at 67% power factor lagging. The power consumed in one phase of the load is _______________ kW. e) The ________________ in an unbalanced three-phase system is usually measured using the two-wattmeter method. f) Three-phase power ...
... d) A Y-connected motor in a balanced three-phase system consumes 30 kW at 67% power factor lagging. The power consumed in one phase of the load is _______________ kW. e) The ________________ in an unbalanced three-phase system is usually measured using the two-wattmeter method. f) Three-phase power ...
Test Procedure for the LV5693PGEVB Evaluation Board SANYO Semiconductors TEST Procedure
... Line regulation is defined as the maximum change in output voltage as the input voltage is varied through the specified range. It is measured by changing the input voltage and measuring the minimum/maximum voltage of the output. Line regulation is defined as the difference between maximum and minimu ...
... Line regulation is defined as the maximum change in output voltage as the input voltage is varied through the specified range. It is measured by changing the input voltage and measuring the minimum/maximum voltage of the output. Line regulation is defined as the difference between maximum and minimu ...
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.