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Name Stores Type of stores Parent; Albert: 327: supermarket and hypermarket: Ahold: Billa: 238: supermarket: REWE Group: Coop TIP, TUTY 420+ convenience Skupina Coop
Alza.cz is owned by a group of investors that control it through the holding company L. S. Investments Limited, which is based in Cyprus. The shareholders are unknown. The Chief Executive Officer and Board of Directors is the company's founder Aleš Zavoral. Alza.cz acts as a Czech joint-stock company with a tax domicile in the Czech Republic.
A set of modern LED flashlights A flashlight ( US English ) or electric torch ( Commonwealth English ), usually shortened to torch , is a portable hand-held electric lamp. Formerly, the light source typically was a miniature incandescent light bulb , but these have been displaced by light-emitting diodes (LEDs) since the early 2000s.
Until then, electricity was usually generated where it was used. The first power-distribution systems installed in European and US cities were used to supply lighting: arc lighting running on very-high-voltage (around 3,000 V) alternating current (AC) or direct current (DC), and incandescent lighting running on low-voltage (100 V) direct ...
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The LED's depends on its material. Ohm's law and Kirchhoff's circuit laws are used to calculate the appropriate resistor value, by subtracting the LED's from the supply voltage and dividing by the desired operating current. With a sufficiently high supply voltage, multiple LEDs in series can be powered with one resistor.
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