Cleaning refrigerator coils helps the appliance run efficiently, extends its life, and reduces your energy bill. Use a coil cleaning brush to remove debris on the coils, which are located under the ...

They are found in numerous hospitals, hotel rooms, schools, and offices. They are small air-handling units paired with chilled-water and hot-water coils, with a fan to circulate heated or chilled air.

MIAMI, Okla. — Unfortunately for indoor mushroom farmers, the very environmental conditions that produce bumper mushroom crops — subdued light, high humidity, and cool temperatures — also promotes ...

Some relays will become warm if they remain energized for some time. The circuit shown here will actuate the relay as before but then reduce the ‘hold’ current through the relay coil current by about ...

California’s energy crisis is hitting home. Electricity bills are rising, and people are looking for ways to cut consumption and costs. This is the 16th in a series of energy-saving tips. Previous ...

The circuit shown in the figure uses stored energy in the multiplexer relay coil to boost the power-supply voltage from 3.3 to 5.1 V. This extra voltage enhances the amplifier's ability to produce a ...