ARUS LISTRIK 5.1. ARUS DAN RAPAT ARUS Arus listrik adalah muatan yang bergerak. Dalam konduktor padat sebagai pem-bawa muatan adalah elektron bebas dan dalam konduktor cair atau elektrolit pem-bawa muatannya adalah ion. Elektron be bas dan ion dalam konduktor bergerak karena pengaruh medan listrik. Rangkaian listrik merupakan dasar dari teori rangkaian pada teknik elektro yang menjadi dasar atay fundamental bagi ilmu-ilmu lainnya seperti elektronika, sistem daya, sistem computer, putaran mesin, dan teori control.

Oris Der Meistertaucher Regulateur divers wrist watch with helium valve from Oris TT1 Collection. Regulator, each hand is seated on its own pinion. This is the most useful feature for a deep scuba diver as its easy to read big red minute hand without confusion of others. 1000m Water resistant. Swiss ETA Automatic movement, titanium case with uni-directional 0-60 rotating bezel, screw-down crown, luminous hands and markers on black dial with date calendar, sapphire anti-reflective scratch-proof crystal, rubber watch band. Comes with a set: metal watch bracelet and tools. Oris designed this model in collaboration with troops of Italian Special Forces regiment Col Moschin in their quest of an all terrain, lightweight, non-reflective, highly water resistant, easily adjustable, comfortable to wear, anti-magnetic watch.

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This 1000m divers 4set '9 Reggement D`assalto 'Col Moschin' limited edition model made of blackened(grey plated) titanium case, with Swiss made automatic movement offering a power reserve indicator and featuring patented locking bezel system, comes in a nice presentation box.

Example #2 6309-576A 2D5822 Mvmt-Case Serial Most Seikos have a 'retail' model number that is displayed in the store but not written anywhere on the watch. They also have a 'reference' model number that is written on the case back. This reference model number is a combination of two numbers: • movement caliber • case code Each of these two numbers are four digits long and they are separated by a hyphen. In the example images the reference model number is highlighted in red.

The other number you will need is the serial number. This is also on the case back and is six digits long. In the example images the serial number is highlighted in blue. Every watch has a unique combination of reference model number plus serial number. Example #3 7S36-03J0 411082 Mvmt-Case Serial The first digit of the serial number tells you the last digit of the year the watch was made.

Looking at the example images: • for example #1 the year ends in 0 • for example #2 the year ends in 2 • for example #3 the year ends in 4 You may notice this does not tell us which decade. That is why we also ask for the model number. For many of Seiko's movements we know the first year they were produced and for most movements they were produced for less than 10 years.

This helps us narrow down the decade. Using this additional information we can update our three examples: • the 6119 was first made in 1970 so #1 is from 1970 or 1980 • the 6309 was made from 1976 to 1987 so #2 is from 1982 • the 7S36 was first made in 1996 so #3 is from 2004 or 2014 The second digit of the serial number is also useful. It tells you the month the watch was manufactured.