Hi,
I have just found a RS232 - RS485 Converter with Automatic RX - TX Control.
The converter is available at http://www.radiolocman.com/shem/schematics.html?di=64700
but they only give the schematic without any explain how it work.
Could anyone help me expalain theory behind this circuit?
How transistor is used to control the "Receive" and "Transmit" modes automatically?
Thanks.
I have just found a RS232 - RS485 Converter with Automatic RX - TX Control.
The converter is available at http://www.radiolocman.com/shem/schematics.html?di=64700
but they only give the schematic without any explain how it work.
Could anyone help me expalain theory behind this circuit?
How transistor is used to control the "Receive" and "Transmit" modes automatically?
Thanks.
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