Opto Isolated Rs232 Circuit

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Opto isolated rs232 circuit.

Isolated rs 232 analog devices offers a wide range of rs 232 transceivers to suit many applications. Your maximum baud rate is 4800 so 208 µs per bit. I had to once interface an high voltage circuit to pc the uc had to communicate thru rs232 comm port serial port. This 3 wire rs232 opto isolator features 5000v opto isolation circuitry and optically isolates three 3 rs 232 lines tx rx and gnd which effectively protects your rs 232 devices from ground loops noise problems transient surges remote lightning and spikes.

2009 06 29 19 57 41 edited 2010 10 14 22 33 18 in propeller 1. Circuit for opto isolated rs232. This design is for a simple half duplex optically isolated interface that converts a 20 ma current loop connected to j2 into an rs232 signal on j1 which can be monitored by say a laptop pc. July 15 2016 delabs digital circuits discrete circuits embedded systems 0.

Rs232 with opto isolation i had to once interface an high voltage circuit to pc the uc had to communicate thru rs232 comm port serial port. In the author s case the system operates at 1200 baud. I have searched the web and found bits of a circuit here and there but i m sure some prophead has done. Hi all can anyone point me to a suitable circuit for implementing optically isolated rs232 via max 3232 and the propeller.

Part of the 80c31 8051 sbc. Proper rs 232 logic levels are from below 5 v for space to above 5 v for mark. As rs 232 cable networks and the systems to them can be vulnerable to voltage spikes and ground loops we have developed a number of innovations that protect against these issues and create an isolated rs 232 environment. Since the idle level is space you want to detect the mark state by turning on a opto isolator.