Leírás
GY-471 3A tartomány MAX471 Árammodul Áramérzékelés Áramérzékelő árammérés
GY-471 3A range MAX471 Current module Current detection Current sensor current measurement
Link: https://pan.baidu.com/s/149lqpwCkHGNkZlS7Wi1_uQ extraction code: bmu3
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The module can be used to test current and voltage.
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The principle of voltage test is based on the principle of resistance voltage divider, which can reduce the input voltage of red terminal connector by 5 times. The maximum analog input voltage is 5 v, and the input voltage of the voltage detection module is 25V or less than 5Vx5 (if a 3.3 v system is used, the input voltage is 16.5 v or less than 3.3Vx5). The AVR chip has a 10-bit AD, so the analog resolution of the module is 0.00489V (5V / 1023), so the minimum voltage of the input voltage detection module is 0.00489 Vx5 = 0.02445V.
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The MAX471 chip on the board is used to test the consumption current of the load.
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Parameters:
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Test voltage range: DC3-25V (for Arduino on 5V) or DC3-16.5V (on 3.3V)
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Test current range: DC 0-3A
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Size: 19.5 * 20.3mm
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The package includes:
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1 X MAX471 voltage and current sensor module
1005004309922766. – fareast
