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MS Word - Sonoma State University
MS Word - Sonoma State University

... Two students are queried about the effect of passing the square-wave signal through the RC high-pass filter. They were told that the 3-dB break frequency, denoted by f-3dB, is four octaves below the fundamental frequency of the square-wave input signal. The square-wave fundamental frequency is given ...
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... an active power supply. The 128-bit AES security encryption and decryption coprocessor adds advanced security for data protection. With its innovative wake-up and localization RF connectivity, this highly integrated SOC solution enables very small compact designs with small batteries. The device arc ...
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... independent half bridges. For this reason, each half bridge has separated gate-drive supply (GVDD_x), bootstrap pins (BST_x) and power-stage supply pins (PVDD_x). Furthermore, an additional pin (VDD) is provided as power supply for all common circuits. Although supplied from the same 12-V source, it ...
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... MAX679 3.3V capacitor charge pump. But it too failed for the same reason the previous did not succeed. A performance test was conducted to test the battery lifetime of a voltage-regulated system connected to a beacon. Without the regulator, the beacons would operate for 2 weeks before the batteries ...
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... meter can read up to 40 volts on the scale. Any reading above this level will cause the meter to reset to a higher scale. If not set on autoranging, the meter display would indicate OL if a reading exceeds the limit of the scale selected. (Courtesy of Fluke Corporation) ...
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... spikes, generated by the DC-DC converters. A larger resistor than 10 Ω should not be used because the current into Vcc of up to 2.5 mA causes a voltage drop at the resistor causing the undervoltage lockout circuitry connected at Vcc internally to switch off too early. Input Capacitor Selection Becau ...
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Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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