Detectors (IR, Energy Resolving) Ay 122a - Fall 2012 S. G. Djorgovski
... • Since the band gap is ~ 1 meV, there are ~1000 times more carriers generated than in Si detectors where the band gap is ~ 1 eV • Carriers tunnel through the barrier to the other electrode, and produce an increased current which can be measured ...
... • Since the band gap is ~ 1 meV, there are ~1000 times more carriers generated than in Si detectors where the band gap is ~ 1 eV • Carriers tunnel through the barrier to the other electrode, and produce an increased current which can be measured ...
MAX1848 White LED Step-Up Converter in SOT23 General Description Features
... The MAX1848 is put into shutdown when VCTRL is less than 100mV. In shutdown, supply current is reduced to 0.3µA by powering down the entire IC except for the CTRL voltage detection circuitry. CCOMP is passively discharged during shutdown, allowing the device to reinitiate a soft-start whenever the d ...
... The MAX1848 is put into shutdown when VCTRL is less than 100mV. In shutdown, supply current is reduced to 0.3µA by powering down the entire IC except for the CTRL voltage detection circuitry. CCOMP is passively discharged during shutdown, allowing the device to reinitiate a soft-start whenever the d ...
MAX9938 1µA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier General Description
... ratio between ROUT and R1 at RS+. Figure 2 shows the input common-mode filter. Again, the corner frequency of the filter is determined by the choice of RIN, CIN and is affected by R1. In this case RIN affects both gain error and input offset voltage. RIN should be smaller than R1 so that it has negl ...
... ratio between ROUT and R1 at RS+. Figure 2 shows the input common-mode filter. Again, the corner frequency of the filter is determined by the choice of RIN, CIN and is affected by R1. In this case RIN affects both gain error and input offset voltage. RIN should be smaller than R1 so that it has negl ...
USB Voltage and Current Output Devices
... D/A LOAD signal from an external source. When the SYNCLD pin receives the trigger signal, the analog outputs are updated simultaneously. In master mode, the internal D/A LOAD signal is sent to the SYNCLD pin. You can then synchronize with a second device of the same type and simultaneously update th ...
... D/A LOAD signal from an external source. When the SYNCLD pin receives the trigger signal, the analog outputs are updated simultaneously. In master mode, the internal D/A LOAD signal is sent to the SYNCLD pin. You can then synchronize with a second device of the same type and simultaneously update th ...
CIRCUIT FUNCTION AND BENEFITS
... digital filter (when it is a logic low). On the first MCLK falling edge after SYNC returns to logic high, the AD7765 digital filter starts to process samples internally. The SYNC function accomplishes two things: ...
... digital filter (when it is a logic low). On the first MCLK falling edge after SYNC returns to logic high, the AD7765 digital filter starts to process samples internally. The SYNC function accomplishes two things: ...
AM-270 Industrial Multimeter with Bar
... 1000V range has the lowest (300V). It is recommended to first measure the signal voltage (or current) level then activate the Hz function in that voltage (or current) range to automatically set the most appropriate trigger level. You can also press the RANGE button momentarily to select another trig ...
... 1000V range has the lowest (300V). It is recommended to first measure the signal voltage (or current) level then activate the Hz function in that voltage (or current) range to automatically set the most appropriate trigger level. You can also press the RANGE button momentarily to select another trig ...
A 10Gb/s wide-band current-mode logic I/O interface for high
... signal. This effect becomes serious especially when the circuit amplifiers a small signal and the DC offset also is amplified at the same time. The DC offset cancellation circuit is necessary because the offset voltages contributed from device and layout mismatches can become a problem after three s ...
... signal. This effect becomes serious especially when the circuit amplifiers a small signal and the DC offset also is amplified at the same time. The DC offset cancellation circuit is necessary because the offset voltages contributed from device and layout mismatches can become a problem after three s ...
RC Circuit Lab
... 6. Stop previous recording and sketch first Pasco recording onto Graph 1.1. Do the same for the second graph which was discharging but instead record it in Graph 1.2. 7. Record the resistance and capacitance from first trial into Table 1.1. 8. Observe the voltage readings on the Galvanometer as the ...
... 6. Stop previous recording and sketch first Pasco recording onto Graph 1.1. Do the same for the second graph which was discharging but instead record it in Graph 1.2. 7. Record the resistance and capacitance from first trial into Table 1.1. 8. Observe the voltage readings on the Galvanometer as the ...
Schematic Diagrams - Oregon State EECS
... A schematic diagram is a concise, symbolic description of an electrical circuit. It specifies the elements that make up an electrical circuit and how they are connected. Schematic diagrams form one of the basic languages of electrical engineering. On a schematic, there may be many parts which are id ...
... A schematic diagram is a concise, symbolic description of an electrical circuit. It specifies the elements that make up an electrical circuit and how they are connected. Schematic diagrams form one of the basic languages of electrical engineering. On a schematic, there may be many parts which are id ...
Breaking the Myth of the Audiopile - Encompass
... larger amount of different types of frequencies are required to represent the sound itself. Closer together frequencies on the other hand have longer durations. This principle limits the precision of the ear in terms of duration of the sound and frequency. In the tests given humans were able to hear ...
... larger amount of different types of frequencies are required to represent the sound itself. Closer together frequencies on the other hand have longer durations. This principle limits the precision of the ear in terms of duration of the sound and frequency. In the tests given humans were able to hear ...
Tube Town – Bias Setup
... parameter is missing: the value at which the idle current should be set. This can either simply be calculated, or read out of the table below. Setting a tube to a value from the table guarantees that the tubes are working in a stable state. They will not be unnecessarily loaded, which contributes to ...
... parameter is missing: the value at which the idle current should be set. This can either simply be calculated, or read out of the table below. Setting a tube to a value from the table guarantees that the tubes are working in a stable state. They will not be unnecessarily loaded, which contributes to ...
TPS54325 数据资料 dataSheet 下载
... The main control loop of the TPS54325 is an adaptive on-time pulse width modulation (PWM) controller that supports a proprietary D-CAP2™ mode control. D-CAP2™ mode control combines constant on-time control with an internal compensation circuit for pseudo-fixed frequency and low external component co ...
... The main control loop of the TPS54325 is an adaptive on-time pulse width modulation (PWM) controller that supports a proprietary D-CAP2™ mode control. D-CAP2™ mode control combines constant on-time control with an internal compensation circuit for pseudo-fixed frequency and low external component co ...
Q-Astec - First transient power converter using switched
... Transient can be supported in the time that it takes to turn the FET On/Off When output current follows processor demand current, significant reduction in output capacitance can be observed The constant current source is derived from a Buck Converter driving a matrix Transformer configuration ...
... Transient can be supported in the time that it takes to turn the FET On/Off When output current follows processor demand current, significant reduction in output capacitance can be observed The constant current source is derived from a Buck Converter driving a matrix Transformer configuration ...
AP65500 Description Pin Assignments
... When the HS MOSFET is on, inductor current starts to 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 ...
... When the HS MOSFET is on, inductor current starts to 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 ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.