Drive circuit for transmitting data signals on power wire

A drive circuit for transmitting data signals on power wire, comprising:

• a DC power module,
• a switching circuit module,
• a voltage division clamping circuit module,
• a receiving module and
• a control circuit module;
• the switching circuit module and the voltage division clamping circuit module are connected in parallel, a first end of the parallel circuit is connected to an input end of the receiving module, and a second end of the parallel circuit is connected to an anode of the DC power module;
• an output end of the receiving module is connected to a cathode of the DC power module;
• the control circuit module is connected to the switching circuit module, and controls the conduction and disconnection of the switching circuit module;
• when the switching circuit module is conducted, the DC power module will apply a first voltage to the receiving module through the switching circuit module, and when the switching circuit module is disconnected, the DC power module will apply a second voltage to the receiving module through the voltage division clamping circuit module;
• wherein the DC power module is an AC-DC constant-voltage source;
• wherein the receiving module comprises at least one LED lamp, wherein the LED lamp comprises a plurality of light-emitting diodes which are connected in series or in parallel and are connected to a current limiting circuit module in series, the anode of the LED lamp is the input end of the receiving module, a cathode of the LED lamp is connected to an input end of the current limiting circuit module, and an output end of the current limiting circuit module is the output end of the receiving module;
• wherein the current limiting circuit module comprises
• a first resistor (R4), a second resistor (R5), a first triode (Q1) and a second triode (Q2);
• a first end of the first resistor (R4) and a collector electrode of the second triode (Q2) are connected to an input end of the current limiting circuit module,
• a second end of the first resistor (R4) is connected to a base electrode of the second triode (Q2) and a collector electrode of the first triode (Q1),
• an emitter electrode of the second triode (Q2) is connected to a base electrode of the first triode (Q1) and one end of the second resistor (R5);
• an emitter electrode of the first triode (Q1) and a second end of the second resistor (R5) are connected to an output end of the current limiting circuit module.