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ADS7056 Ultra-Low Power, Ultra-Small Size, 14
ADS7056 Ultra-Low Power, Ultra-Small Size, 14

... The SPI-compatible serial interface is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interfacing to a variety of ho ...
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... same outstanding sonic quality and reliability that has contributed to Hafler’s enviable reputation within professional recording studios and broadcast facilities all over the world. This manual contains information on using the TA1100 and TA1600 amplifiers. It is organized into two main sections. “ ...
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... Artifacts differ in type, size, and timing across subjects Start with parameters based on previous experience Look at single trials to assess false positives & negatives Adjust parameters to achieve optimal balance between removing problematic artifacts and maintaining # of trials - Check percentage ...
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... What You Need to Get Started ............................................................................................................ 2 Attaching the Quick Reference Label.................................................................................................. 2 Getting Started with the ...
MAX17504 4.5V–60V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with  Internal Compensation
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... integrated MOSFETs operates over a 4.5V to 60V input. It delivers up to 3.5A and 0.9V to 90% VIN output voltage. Built-in compensation across the output voltage range eliminates the need for external components. The feedback (FB) regulation accuracy over -40°C to +125°C is ±1.1%. The device is avail ...
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... MATERIALS: Protoboard; power supply; multimeter; meter movement; precision potentiometer; 10K resistor. DISCUSSION: Today’s technician regularly uses a digital multimeter that makes use of analog-to-digital converter integrated circuit devices and precision parts to measure voltage, current, and res ...
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... A unique input multiplexing scheme has been utilized to provide multiple analog channels with softwareconfigurable single-ended, differential, or a new pseudo-differential option which will convert the difference between the voltage at any analog input and a common terminal. The analog signal condit ...
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... “_up” Scintillators 1& 2 up with appropriate voltage and current limits: RAMP speed 50V/s “_down” Scintillators 1& 2 down and switched OFF After powering up any detectors required the monitoring current limits can be set to safe levels by executing the command “./iLimit” In an emergency the crate ca ...
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... The MAX5216PMB1 peripheral module provides the necessary hardware to interface the MAX5216 16-bit DAC to any system that utilizes PmodK-compatible expansion ports configurable for SPI communication. The IC is a single-channel, low-power, buffered voltage-output DAC. The reference voltage for the DAC ...
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Aalborg Universitet
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... case the V− terminal of the circuit will be grounded to that metal. Alternatively, mount the LM35 inside a sealedend metal tube, and then dip into a bath or screw into a threaded hole in a tank. As with any IC, the LM35 and accompanying wiring and circuits must be kept insulated and dry, to avoid le ...
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... auxiliary inputs designed for USB applications. It has two independent channels, each with its own faultblanking and autoreset function. Each channel has an error flag output to notify the USB controller when the current limit, short circuit, undervoltage lockout, or thermal shutdown threshold is re ...
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... creates new system resonances which are dependent on specific system conditions. In addition, passive filters often need to be significantly overrated to account for possible harmonic absorption from the power system. Passive filter ratings must be co-ordinated with reactive power requirements of th ...
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... The three-phase voltage source converter (VSC) [1–3] has widespread applications, including active power filters, unified power flow control, high voltage direct current transmission, and power transmission for solar, wind, and other renewable energies. It can be also foreseen that the VSC could bec ...
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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.
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