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EFFECTIVE FOCUSES AND THEIR CLUES
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Miscellaneous coin. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Focus Description:

Take a copper coin from the plate and hold it with tweezers. Then dip the coin into a glass of water and it instantly turns silver. Showing it from both sides, bring a silver coin into the flame of a candle. Immediately there will be an instant flash, and the coin under the influence of the flame will suddenly become gold.

Focus secret:

Although a copper coin, tweezers and a burning candle are the most common, the trick is obtained because a zinc solution is used instead of water, which looks no different from water.

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Random news from the Archive

LED drivers from Mean Well HLG-480H 10.05.2017

Mean Well has expanded its line of highly reliable LED drivers with the launch of the new HLG-480H series of 480W output power converters. Power supplies according to the type of stabilization of output parameters are manufactured in two versions: with current stabilization (HLG-480H-C series) and with dual mode of voltage and current stabilization (HLG-480H series).

Both variants of the HLG-480H have either manual output adjustment or 3-in-1 dimming (PWM, 0-10V, Resistance) and programming (Smart Timer Dimming).

Power supplies HLG-480H have high technical parameters and a 7-year manufacturer's warranty. The new converters are designed for high-power outdoor and industrial LED luminaires, for architectural and decorative lighting of buildings and other applications where a powerful, reliable, efficient, fanless power supply is required that is resistant to various weather phenomena.

Main technical parameters of HLG-480H and HLG-480H-C series:

Output power 480W
Output current (for HLG-480H-C) from range: 1400; 1750; 2100; 2800; 3500 mA
Output voltage (for HLG-480H) from the range: 24; thirty; 30; 36; 42; 48 V
KM>0,97
Efficiency 95%
Input voltage range 90-305V
Temperature range -40°С...65°С
IP65 / 67
Warranty 7 years

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