Single live wired speed control circuit of ceiling fan motor

A single live wired speed control circuit of a ceiling fan motor, comprising:

• a single live wire (SLW) electricity acquisition unit, having a first power contact and a second power contact;
• wherein the first power contact of the SLW electricity acquisition unit is connected to a live wire of an alternate current (AC) circuit for acquiring electricity;
• a speed control unit, configured to output voltage signals of various voltages;
• a control unit, electrically connected to the speed control unit and the second power contact of the SLW electricity acquisition unit, and configured to receive the various voltages from the speed control unit and subsequently output various control signals;
• and
• a chopper unit, having a first contact, a second contact, and a control contact;
• wherein the control contact is electrically connected to the control unit;
• wherein the chopper unit is electrically connected to the live wire of the AC circuit in series through the first contact and the second contact of the chopper unit;
• wherein the chopper unit is configured to receive one of the control signals outputted from the control unit, and the chopper unit chops the received control signal into a chopped signal and outputs the chopped signal through the live wire of the AC circuit;
• wherein the chopper unit comprises a silicon controlled rectifier and a triode, and the live wire comprises an input side and an output side;
• wherein the triode has a collector, a base, and an emitter;
• the base of the triode is electrically connected to the control unit, the emitter of the triode is electrically connected to a ground, and the collector of the triode is electrically connected to a voltage source;
• and
• wherein the silicon controlled rectifier has an anode, a gate, and a cathode;
• the gate of the silicon controlled rectifier is electrically connected to the collector of the triode, the anode of the silicon controlled rectifier is electrically connected to the output side of the live wire, and the cathode of the silicon controlled rectifier is electrically connected to the input side of the live wire.