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

Digital Clock with 6 nixies
Triac zero voltage switching
Isolated Voltage Sensor
Logic Probe
Active AM Radio Antenna Amplifier / Preamplifier Circuit
MultiKey - One Wire Keypad
Numerical control UPS uninterrupted power system technological principle and typical application
QRD1114IR Sensor
street light lamp circuit
wireless headphones transmitter
MOSFETs IN SERIES
Discolight effect with bass beat control using PIC
IR Remote Control Jammer With 2N4403 PNP Transistor
Upgrade your RC Transmitter with a DIY Tilt Motion Control Module



Top