12. Output devices¶
This week, as a group assignment, examine the power consumption of the circuit.
The power consumption is obtained by the following formula. W = V × A
If power consumption is multiplied by time, it will become power consumption every hour. Wh = W × h
An example of power consumption in Japan. In Japan, the basic rate changes depending on the number of amps to be contracted.
And the rate of wattage per hour is changed in three steps
|0 - 120||¥19.52|
|120 - 300||¥26.00|
- Peltier Element
- Internal resistance
- 12V / 2.5Ω = 4.8A ≠ 5A
Check the power consumption by increasing 2V from 1V
- 1V → 0.27A
- 3V → 0.75A
- 5V → 0.98A
- 7V → 1.40A
By measuring the temperature, I was thinking about examining the relationship between power consumption and temperature.
However, when the measurement took time, the temperature rose during that time.
As a result, at 7 V, the Peltier element was destroyed and no current flowed.
Power consumption of Peltier device (TEC-12705)¶
Power consumption and charge for 1 hour at each voltage
|Voltage||Ampere||Killo Watt per Hour||Charge|