ULN2803 driver chip for power amplification! That is, the current signal output by the single chip microcomputer is particularly small and can not directly drive the large load, so you can use ULN2803 to realize the connection between the single chip microcomputer and the load!
ULN2803 driver chip for power amplification! That is, the current signal output by the single chip microcomputer is particularly small and can not directly drive the large load, so you can use ULN2803 to realize the connection between the single chip microcomputer and the load!