other
... If the control signal is logic-1, the BJT is on. Consequently, the lock (motor) is on. If the control signal is logic-0, the BJT is off. Consequently, the lock (motor) is off. A diode is parallel with the lock (motor) to protect the lock (motor) from reverse current. ...
... If the control signal is logic-1, the BJT is on. Consequently, the lock (motor) is on. If the control signal is logic-0, the BJT is off. Consequently, the lock (motor) is off. A diode is parallel with the lock (motor) to protect the lock (motor) from reverse current. ...
LABORATORY OF ANALOG SIGNAL PROCESSING AND DIGITIZING
... For conversion of low frequency signal to frequency is V to F convertor used. In Fig. 10 is presented V to F convertor with scale 1V/kHz used. ...
... For conversion of low frequency signal to frequency is V to F convertor used. In Fig. 10 is presented V to F convertor with scale 1V/kHz used. ...
Capacitor Self
... monitor the voltage across the 10 ohm resistor. This is important because it has the same phase as the current. Use a frequency generator output of 1 kHz (i.e. a period of 1 ms on the oscilloscope graticule.) 2. Connect the Ch 1 input of the oscilloscope to point b to measure the amplitude of the vo ...
... monitor the voltage across the 10 ohm resistor. This is important because it has the same phase as the current. Use a frequency generator output of 1 kHz (i.e. a period of 1 ms on the oscilloscope graticule.) 2. Connect the Ch 1 input of the oscilloscope to point b to measure the amplitude of the vo ...
An Introduction to Digital Control of Switching Power Converters
... set point accuracy can add up to prohibitive cost and power consumption. Dither – sometimes pulse jitter can be useful. Fortunately there are ways to improve the effective resolution of the DPWM without raising its clock rate beyond practical levels. One such method, called “Dither”, uses the fact t ...
... set point accuracy can add up to prohibitive cost and power consumption. Dither – sometimes pulse jitter can be useful. Fortunately there are ways to improve the effective resolution of the DPWM without raising its clock rate beyond practical levels. One such method, called “Dither”, uses the fact t ...
DAC 1 - godinweb
... ◊ The resolution represents the smallest change, or step, in the analog output. The greater the resolution, the smaller the steps. ◊ To increase resolution increase the number of bits in the binary value. ◊ In our example, a 4-bit number represented a 0.5 volt change per step. By increasing the numb ...
... ◊ The resolution represents the smallest change, or step, in the analog output. The greater the resolution, the smaller the steps. ◊ To increase resolution increase the number of bits in the binary value. ◊ In our example, a 4-bit number represented a 0.5 volt change per step. By increasing the numb ...
FREQUENCY INVERTER VCB 400 from 4 to 355 KW
... Means free choice of the most suitable control method for specific applications - up to positioning and synchronous drives - using the key pad or any other control unit. ...
... Means free choice of the most suitable control method for specific applications - up to positioning and synchronous drives - using the key pad or any other control unit. ...
AD8629S: Zero-Drift, Single-Supply Rail-to-Rail Input/Output Operational Amplifier Aerospace Data Sheet (Rev E, 10/2012)
... for the majority of applications without the need for additional filtering. The relatively high clock frequency of 15 kHz simplifies filter requirements for a wide, useful noise-free bandwidth. The AD8629 has low noise over a relatively wide bandwidth (0 Hz to 10 kHz) and can be used where the highe ...
... for the majority of applications without the need for additional filtering. The relatively high clock frequency of 15 kHz simplifies filter requirements for a wide, useful noise-free bandwidth. The AD8629 has low noise over a relatively wide bandwidth (0 Hz to 10 kHz) and can be used where the highe ...
Direct and Alternating Voltages, the Oscilloscope
... 6. Set the function generator to make a high-frequency (1.5 MHz) square wave and use the scope to measure the rise time. This is the time it takes the wave to go from 10% to 90% of its maximum amplitude. Measure also the corresponding fall time. 7. What is the use of the alternate and chop options? ...
... 6. Set the function generator to make a high-frequency (1.5 MHz) square wave and use the scope to measure the rise time. This is the time it takes the wave to go from 10% to 90% of its maximum amplitude. Measure also the corresponding fall time. 7. What is the use of the alternate and chop options? ...
BUX85 SWITCHMODEtNPN Silicon Power Transistors
... SWITCHMODE is a trademark of Semiconductor Components Industries, LLC. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representatio ...
... SWITCHMODE is a trademark of Semiconductor Components Industries, LLC. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representatio ...
a Wideband, High Output Current, Fast Settling Op Amp AD842*
... circuit path, as well as minimizing the effects of high frequency coupling. Sockets should be avoided because the increased interlead capacitance can degrade bandwidth. Feedback resistors should be of low enough value to assure that the time constant formed with the circuit capacitances will not lim ...
... circuit path, as well as minimizing the effects of high frequency coupling. Sockets should be avoided because the increased interlead capacitance can degrade bandwidth. Feedback resistors should be of low enough value to assure that the time constant formed with the circuit capacitances will not lim ...
Spring 2013 Final Exam Solutions
... falling edge of the enable or clock signal. Level-triggered flip-flops may have their value changed at any time during which the clock signal is on or off. Both are useful as they may be used to store data. More specifically, edge-triggered flip-flops are useful because they allow for the exact time ...
... falling edge of the enable or clock signal. Level-triggered flip-flops may have their value changed at any time during which the clock signal is on or off. Both are useful as they may be used to store data. More specifically, edge-triggered flip-flops are useful because they allow for the exact time ...
牛顿环和劈尖
... To better understand the oscilloscope controls, you need to know a little more about how the oscilloscopes display a signal. When you connect an oscilloscope probe to a circuit, the voltage signal travels through the probe to the vertical system of the oscilloscope. Figure 1 is a simple block diagra ...
... To better understand the oscilloscope controls, you need to know a little more about how the oscilloscopes display a signal. When you connect an oscilloscope probe to a circuit, the voltage signal travels through the probe to the vertical system of the oscilloscope. Figure 1 is a simple block diagra ...
Lock-in amplifiers
... Sum and difference freq generated Compare to signal addition -- interference Signal frequency close to reference freq – low freq beat – DC for equal freq sine waves – DC output level depends on relative phase ...
... Sum and difference freq generated Compare to signal addition -- interference Signal frequency close to reference freq – low freq beat – DC for equal freq sine waves – DC output level depends on relative phase ...
AD7356 数据手册DataSheet下载
... Analog Inputs of ADC A. These analog inputs form a fully differential pair. Reference Decoupling Capacitor Pins. Decoupling capacitors are connected between these pins and the REFGND pin to decouple the reference buffer for each respective ADC. It is recommended to decouple each reference pin with a ...
... Analog Inputs of ADC A. These analog inputs form a fully differential pair. Reference Decoupling Capacitor Pins. Decoupling capacitors are connected between these pins and the REFGND pin to decouple the reference buffer for each respective ADC. It is recommended to decouple each reference pin with a ...
Signals and Systems Fall 2003 Lecture #1 Prof. Alan S. Willsky 4
... — Population of the nth generation of certain species ...
... — Population of the nth generation of certain species ...
Analog-to-digital converter
An analog-to-digital converter (ADC, A/D, or A to D) is a device that converts a continuous physical quantity (usually voltage) to a digital number that represents the quantity's amplitude.The conversion involves quantization of the input, so it necessarily introduces a small amount of error. Furthermore, instead of continuously performing the conversion, an ADC does the conversion periodically, sampling the input. The result is a sequence of digital values that have been converted from a continuous-time and continuous-amplitude analog signal to a discrete-time and discrete-amplitude digital signal.An ADC is defined by its bandwidth (the range of frequencies it can measure) and its signal to noise ratio (how accurately it can measure a signal relative to the noise it introduces). The actual bandwidth of an ADC is characterized primarily by its sampling rate, and to a lesser extent by how it handles errors such as aliasing. The dynamic range of an ADC is influenced by many factors, including the resolution (the number of output levels it can quantize a signal to), linearity and accuracy (how well the quantization levels match the true analog signal) and jitter (small timing errors that introduce additional noise). The dynamic range of an ADC is often summarized in terms of its effective number of bits (ENOB), the number of bits of each measure it returns that are on average not noise. An ideal ADC has an ENOB equal to its resolution. ADCs are chosen to match the bandwidth and required signal to noise ratio of the signal to be quantized. If an ADC operates at a sampling rate greater than twice the bandwidth of the signal, then perfect reconstruction is possible given an ideal ADC and neglecting quantization error. The presence of quantization error limits the dynamic range of even an ideal ADC, however, if the dynamic range of the ADC exceeds that of the input signal, its effects may be neglected resulting in an essentially perfect digital representation of the input signal.An ADC may also provide an isolated measurement such as an electronic device that converts an input analog voltage or current to a digital number proportional to the magnitude of the voltage or current. However, some non-electronic or only partially electronic devices, such as rotary encoders, can also be considered ADCs. The digital output may use different coding schemes. Typically the digital output will be a two's complement binary number that is proportional to the input, but there are other possibilities. An encoder, for example, might output a Gray code.The inverse operation is performed by a digital-to-analog converter (DAC).