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METRAVOLT 12D Voltage and Continuity Tester with Phase
METRAVOLT 12D Voltage and Continuity Tester with Phase

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... however, their actual frequencies are 313Hz and 604Hz, respectively. We first touch the sub-sensor unit with 600Hz and then touch both units simultaneously. Fig.6 (a), (b), and (c) show the input signal to the computer, two output signals from the Analyzer, respectively. From Fig.6, we can see a cont ...
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... a reflector there is only one, or, for a reflector system, two surfaces. The efficiency of a lens also is very high, if the optical system is designed in an advanced way, using free-form technology. For lenses in general, it is possible to achieve an efficiency of at least 90% for most applications; ...
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Bip Transistor 20V 5A VCE(sat);500mV max. NPN Single TO-126ML

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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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