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