AEM10940 - E-peas
... power to the subsystem at optimal levels of voltage (Vsrc) and current (Isrc), the so-called MPP (Maximum Power Point). Periodically, the MPP control circuit disconnects the source from the pin BUFSRC with the transistor Q1, in order to measure the open-circuit voltage of the harvester. BUFSRC is de ...
... power to the subsystem at optimal levels of voltage (Vsrc) and current (Isrc), the so-called MPP (Maximum Power Point). Periodically, the MPP control circuit disconnects the source from the pin BUFSRC with the transistor Q1, in order to measure the open-circuit voltage of the harvester. BUFSRC is de ...
Safety Considerations in Power Supply Design
... Electric circuits rely upon insulation for operator protection, but designing for safety requires the premise that anything can fail. Therefore safety standards demand a redundant system with at least two levels of protection under the assumption that any single level may experience a failure but th ...
... Electric circuits rely upon insulation for operator protection, but designing for safety requires the premise that anything can fail. Therefore safety standards demand a redundant system with at least two levels of protection under the assumption that any single level may experience a failure but th ...
Quick Start Guide - Electrocomponents
... Modulation signals are comprised of from one to 20 individually programmed steps that may be combined into a modulation sequence and then run. Each step programs the modulation signal for the duration of the step. The amplitude and frequency of the modulation signal may be constant, swept linearly, ...
... Modulation signals are comprised of from one to 20 individually programmed steps that may be combined into a modulation sequence and then run. Each step programs the modulation signal for the duration of the step. The amplitude and frequency of the modulation signal may be constant, swept linearly, ...
Fenix_PD32_2016_user_manual
... If you are not sure what to take to light up your way to destinations, then choose Fenix PD32 (2016). It is the comprehensive integration of exquisite body size and high performance in efficient output, long battery duration and far-reaching beam distance. Furthermore, the good compatibility with on ...
... If you are not sure what to take to light up your way to destinations, then choose Fenix PD32 (2016). It is the comprehensive integration of exquisite body size and high performance in efficient output, long battery duration and far-reaching beam distance. Furthermore, the good compatibility with on ...
Current-voltage model of LED light sources - VBN
... needed. Street lighting requires generation of white light with high efficacy and low color quality thus the luminaire may consist only of phosphor converted white diodes. Mood lighting and profile lamps are designed to generate colored light at various intensity levels. These luminaires are typical ...
... needed. Street lighting requires generation of white light with high efficacy and low color quality thus the luminaire may consist only of phosphor converted white diodes. Mood lighting and profile lamps are designed to generate colored light at various intensity levels. These luminaires are typical ...
AN2844
... This information is used to change the set point of the pulse-by-pulse current limitation. In the standard application circuit with L6565 as U1, an OFF-time limitation circuit with a Q3 transistor has been added. This transistor limits the maximum switching frequency of the converter to approximatel ...
... This information is used to change the set point of the pulse-by-pulse current limitation. In the standard application circuit with L6565 as U1, an OFF-time limitation circuit with a Q3 transistor has been added. This transistor limits the maximum switching frequency of the converter to approximatel ...
Nuclear Spectroscopy with the PC
... The PC is turned into a MCA using a software package called LABVIEW. LABVIEW is a product of National Instruments and is commonly used in research environments to interface computers with data collecting hardware. For the LABVIEW applications in this class you will not need to know any of the detail ...
... The PC is turned into a MCA using a software package called LABVIEW. LABVIEW is a product of National Instruments and is commonly used in research environments to interface computers with data collecting hardware. For the LABVIEW applications in this class you will not need to know any of the detail ...
The Digital Multimeter
... position for all of your resistance measurements. • In this position, the display will show an “O.L.” reading when first turned on. This indicates that there is an “over load” or off scale resistance. This occurs when the resistance is higher than the meter is capable of reading, such as when no dev ...
... position for all of your resistance measurements. • In this position, the display will show an “O.L.” reading when first turned on. This indicates that there is an “over load” or off scale resistance. This occurs when the resistance is higher than the meter is capable of reading, such as when no dev ...
Electronics Exercise 2: The 555 Timer and its
... b) Create an accurate clock signal (Example: There is a pulse accumulator pin on the 68HC11 microcontroller that counts pulses. You can apply an Astable 555 timer circuit set at 1 Hz frequency to the pulse accumulator pin and create a seconds counter within the microcontroller. The pulse accumulator ...
... b) Create an accurate clock signal (Example: There is a pulse accumulator pin on the 68HC11 microcontroller that counts pulses. You can apply an Astable 555 timer circuit set at 1 Hz frequency to the pulse accumulator pin and create a seconds counter within the microcontroller. The pulse accumulator ...
DS1811 5V EconoReset with Open Drain Output FEATURES PIN ASSIGNMENT
... status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for approximately 150 ms to allow the power ...
... status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for approximately 150 ms to allow the power ...
ADS930 数据资料 dataSheet 下载
... hold circuit is shown in Figure 1. The switches are controlled by an internal clock which has a non-overlapping two phase signal, φ1 and φ2. At the sampling time the input signal is sampled on the bottom plates of the input capacitors. In the next clock phase, φ2, the bottom plates of the input capa ...
... hold circuit is shown in Figure 1. The switches are controlled by an internal clock which has a non-overlapping two phase signal, φ1 and φ2. At the sampling time the input signal is sampled on the bottom plates of the input capacitors. In the next clock phase, φ2, the bottom plates of the input capa ...
Issue 22 - HP Archive
... to adjust the meter for correct indication of the three input voltages of 0.1, 0.05, and 0.025 volt A second method for calibrating the input voltmeter is to compare the Calibrator voltmeter reading directly to the calibrated output of a known accurate signal generator having a piston type attenuato ...
... to adjust the meter for correct indication of the three input voltages of 0.1, 0.05, and 0.025 volt A second method for calibrating the input voltmeter is to compare the Calibrator voltmeter reading directly to the calibrated output of a known accurate signal generator having a piston type attenuato ...
Thermocouple Instrumentation Group Project Temperature Measurement in a Nuclear Reactor
... standard instrumentation cable for connection to display or control equipment, • RTDs are popular because of their excellent stability, and exhibit the most linear signal with respect to temperature of any electronic temperature sensor. ...
... standard instrumentation cable for connection to display or control equipment, • RTDs are popular because of their excellent stability, and exhibit the most linear signal with respect to temperature of any electronic temperature sensor. ...
Trip Circuit Supervision for M
... 1. Under I/O Configuration, the Input #1 setting must be configured as “General Input”. ...
... 1. Under I/O Configuration, the Input #1 setting must be configured as “General Input”. ...
Product Data Sheet: Preamplifier Type 2663 and 2663B (bp078915)
... ❍ Adjustable high- and low-pass filters ❍ Adjustable output bias ❍ Overload detection ❍ Rugged construction ❍ Power supply: single or dual polarity ...
... ❍ Adjustable high- and low-pass filters ❍ Adjustable output bias ❍ Overload detection ❍ Rugged construction ❍ Power supply: single or dual polarity ...
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.