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m-bus master

Could someone explain attached m-bus bjt circuit in details? Is this a repeater of some sort?

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This is an RS232 to M-Bus Converter/Repeater. M-Bus format is used in Europe for automated meter reading. Basically it converts an RS232 signal into a 2-wire +-15v signal.

Here is a similar schematic with some additional explanation: https://code.google.com/p/iotsys/wiki/MBusConnector

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  • \$\begingroup\$ Hi Nedd, I already know what this circuit does. I just wanted if someone could breakdown the repeater and explain to me. \$\endgroup\$ – shicky Dec 31 '15 at 3:17

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