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Visible light communication which is between
Visible light communication which is between

... Power line communication is the art of sending data through power lines. It can provide spectrum of services such as internet, home automation and home entertainment. Major problem associated with this is the isolation of power line. One of the solutions for the above problem is integrating power li ...
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... DC-DC controller for CPU power in high-end computer systems. Designed for demanding applications in which output voltage precision and good transient response are critical for proper operation, it delivers over 35A from 1.1V to 4.5V with ±1% total accuracy from a +5V ±10% supply. Excellent dynamic r ...
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the sony gendis tr-72 transistor radio from 1956.
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... Note the use of negative feedback via R22 around the audio driver & output stages to lower any distortion. The output transistors, which are not on heat-sinks are DC stabilised by 5 ohm emitter resistors and a special purpose “bias diode” D3 which tracks the base emitter voltage change with tempera ...
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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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