As shown in the figure, what role does this circuit play? Why not directly connect the input to the output?
Fernando 发表于 November 20, 2020
Voltage divider circuit.
Annika 发表于 November 20, 2020
The voltage divider circuit, the resistance increases the power consumption is very limited.
Ryley 发表于 November 20, 2020
4.7K is used as a pull-down resistor.
Rolando 发表于 November 20, 2020
The first 4.7K is pull-down, the latter two are partial pressure, and there is a certain current limit.
