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The sensitivity S [V/W] is the ratio of voltage U [V] generated due to the incident laser power P [W] on the sensor. The voltage generated depends on the Seebeck coefficient of the thermoelectric material; hence it is a material specific constant. [9] The incident power can be calculated by measuring the sensor voltage and using the formula:
Underdrive pulleys modify the amount of engine power that can be drawn by accessory devices. Such alterations to the drive systems for alternators or air conditioning compressors (rather than the power steering pump, for example) can be detrimental to vehicle usability (e.g., by not keeping the battery fully charged), but will not impair safety ...
The Tweet-a-watt [13] is a hacked version of the standard Kill-A-Watt Plug in Power Meter. By piggybacking on the device's on-board LM2902N op-amp chip, the creator was able to get readings for voltage and current and transmit to a computer, which then sent this to Twitter via handle @tweetawatt. [ 14 ]
"This also applies if you lose power due to an emergency or your refrigerator or freezer breaks," says Widen. During such emergencies it's important to keep your fridge and freezer closed to hold ...
A microwave power meter is an instrument which measures the electrical power at microwave frequencies typically in the range 100 MHz to 40 GHz. Usually a microwave power meter will consist of a measuring head which contains the actual power sensing element, connected via a cable to the meter proper, which displays the power reading.
Actor and comedian Rob Schneider revealed he was launching a women's talk show for his new media company that will be an alternative to ABC's "The View.""‘No Apologies Media,’ my new company ...
Hailing from the trendy, direct-to-consumer brand known for the iconic Always Pan, the Our Place Wonder Oven brings a similar eye-catching aesthetic and multifunctionality to the kitchen.. At just ...
Thermoelectric cooling uses the Peltier effect to create a heat flux at the junction of two different types of materials. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, depending on the direction of the current.
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