0
Voltage is not intended to be applied to a thermocouple. Heat is, and that will result is a voltage being developed which can be used to measure the heat.
Actually what will happen depends on the polarity of the voltage applied to the thermocouple. One polarity will heat the thermocouple, the opposite polarity will cool the thermocouple. This phenomenon can be used to make a tiny refrigeration system needing no refrigerant fluid or moving parts (other than a fan to expel the unwanted heat) called a thermoelectric cooler.
A practical thermoelectric cooler is not built with ordinary thermocouples used to measure temperature or generate electricity. Instead it uses large thermocouples having a contact area between the dissimilar metals measured in square inches. Two of these large thermocouples are connected back to back in opposite polarity with a thermal insulator between them. When power is applied, one gets cold while the other gets hot.
Thermoelectric coolers are used in microprocessor heatsinks and in small portable refrigerators that are powered from a car's cigarette lighter outlet. In fact most of these small portable electric refrigerators have a switch that reverses power to the thermoelectric cooler, making it a heater instead; thus they can keep food either cold or hot, whichever is appropriate.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
How many watts are consumed by a light if 1.2 amperes are measured when 12 voltages are applied?
14.4 watts
Is a thermocouple an active or passive transducer-why?
is a thermocouple an active or passive transducer?-why?
Is thermocouple a transducer?
Yes, it's an active transducer. A thermocouple is passive not active
What are linear wave Shaping circuits?
if a sinusoidal voltage is applied to linear circuit the output voltage is also sinusoidal in nature as far as the waveform is concerned the amplitude of input signal may change and there may be phase displacement between input voltages and output voltages
What is neutral temperature in thermocouple?
The maximum sensed
Does an electric heater do the opposite of a thermocouple?
In effect it does. Electricity applied to the heater produces heat. Heat applied to the thermocouple produces electricity.
How many watts are consumed by a light if 1.2 amperes are measured when 12 voltages are applied?
14.4 watts
Is thermocouple output linear?
The output of the thermocouple is linear.
Is thermocouple used in fridges?
Yes, thermocouple is used in fridges !
Can the total of the voltage drop across the loads of a series circuit ever exceed the total of the source voltages applied to that circuit?
no
Which materials could you use to create a thermocouple?
To create a thermocouple one needs thermocouple wire, a means of spot welding the wire, and wire strippers. A thermocouple is used to measure temperature.
What is the purpose of the thermocouple?
The thermocouple keeps a gas pilot light burning.
Is a thermocouple an active or passive transducer-why?
is a thermocouple an active or passive transducer?-why?
What type of colour are use to paint thermocouple?
You should not paint a thermocouple.
How are lower voltages combined into higher voltages for transmission?
Low voltages are not 'combined into higher voltages' for transmission! The lower voltage (e.g. the voltage generated at a power station) is applied to the primary winding of a large power transformer, and the required higher transmission voltage then appears across the transformer's secondary winding. The magnitude of the secondary voltage is determined by the turns ratio of the transformer's windings.
What is the maximum power in Watts that can be attained from a thermocouple?
not much, but it will depend on the type of thermocouple
Is thermocouple a transducer?
Yes, it's an active transducer. A thermocouple is passive not active
