Passive crossover for the Power Amper NEO-20 tweeter. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Speakers
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Author: A. Shikhatov; Publication: bluesmobile.com/shikhman
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Random news from the Archive INA260 - digital current, voltage and power meter with built-in shunt
11.05.2018
The INA260 chip from Texas Instruments allows you to measure current, voltage and power in circuits up to 36 V, 15 A. Guaranteed accuracy is provided by a 2 mΩ shunt built into the microcircuit. The internal shunt has an accuracy of 0.1% and is connected according to the Kelvin circuit, so the measurement results do not depend on the length and cross section of the conductors to the measured circuit.
The INA260 can measure forward and reverse current in both the high and low side. The microcircuit internally multiplies the measured voltage and current values and outputs the resulting power.
The ADC of the microcircuit has a capacity of 16 bits. The price of the least significant digit for the measured current is 1,25 mA, voltage 1,25 V and power 10 mW. The conversion time can be selected from 140 µs to 8 ms (8 values). A special programmable output Alert is designed to signal the end of the conversion or to warn of an overload in voltage, current or power. To reduce fluctuations in readings, you can turn on automatic averaging - from 4 to 1024 times.
The internal shunt can withstand an overload of up to 100 amps for 200 milliseconds and at least 30 amps for a minute. The INA260 operates from a single 2,7...5,5 V supply, typical consumption is 310 µA. Temperature range -40°C to +125°C.
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