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Microcontroller › 8051 › interfacing
how to interface relays with ULN2803 in project home appliances control by voice…..plz reply fast…thnx..
Hi,
If u have uln2803 there are schematics available in net so you can refer to it. Else you can buy a uln2803 relay module available online.
ULN2803 connections are easiest one. one side input – other side output thats all
relay coil terminal is connected to output of chip