PC RS485 Interface


Posted on Nov 25, 2012

This interface circuit provides electrically isolated RS485 communication inteface to the PC serial port the isolation circuit protect the PC from direct connection to hazardous voltages.


PC  RS485  Interface
Click here to download the full size of the above Circuit.

Figure 1 shows the circuit diagram of RS485 interface. Connector K1 is linked to the serial port of the PC, power to the PC side of the circuit is derived from the signal lines DTR and RTS. Positive supply is derived from RTS and negative supply from the




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Monostable photocell circuit
Precision battery voltage monitor
Triggering-scr-series
Arduino Serial Call Response
Baseball
economy radar detector
Thrifty 2Hz Clock
Clap Switch Circuit Project
working principles of motor control
Definition of a Hartley oscillator
Supply Voltage Indicator
mobo43
The signal processing circuit
Clapp oscillator
LC189 making decorative lanterns with fans



Top