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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Active load regulator for low currents, 2,5-4,5 volts 20-200 milliamps. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Regulators of current, voltage, power

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The presented scheme of the active load regulator allows you to adjust the amount of current consumption in the range of 20-200 mA.

Low current active load regulator, 2,5-4,5 volts 20-200 milliamps

The operating voltage range is 2,5-4,5 V. It is mainly used for testing some types of batteries - determining the voltage under load.

See other articles Section Regulators of current, voltage, power.

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Power plant in a button 01.02.2002

Engineers at Columbia University (USA) have created a prototype gas turbine power generator that can replace batteries in portable electronics.

The button-sized miniature power plant is made in a block of crystalline silicon using the same methods used to make microchips. The fuel is hydrogen. Hot steam, the product of its combustion, rotates a turbine with a diameter of four millimeters, developing two million revolutions per minute, and an electric generator is connected to the turbine. The power of the unit is 20 watts, it is quite enough to power a laptop computer, a cell phone or just a flashlight.

True, not every owner will like the fact that his device throws out a trickle of hot steam. Therefore, most likely, a miniature power plant will be mounted in a separate case the size of a deck of cards, and the current from there will be used to charge conventional batteries of a computer, telephone, or flashlight.

According to the creators, the commercial version will be ready by the end of this decade.

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