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the Canon DSLR Power Supply Datasheet
the Canon DSLR Power Supply Datasheet

... Instruments makes a small integrated switching power supply which can be ordered via a free sample from their website at http://www.ti.com. The power supply, part number PTN78000W, allows an input voltage range of 7V to 36V allowing one to use many different types of input power configurations. Effi ...
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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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