1results about How to "High driving power" patented technology

The utility model discloses a lithium electric welding machine chopper drive circuit belongs to drive circuit technical field, including pulse generation controller, photo -coupler drive module, chopper power device, pulse generation controller output signal source generates control pulse signal to photo -coupler, this photo -coupler obtains pulse signal and exports to transistor Q1 and transistor Q2, transistor Q1 and transistor Q2 according to the level state of photo -coupler output signal, the conduction and cut -off of control circuit, transistor Q1 and transistor Q2 drive field effect transistor Q3 and field effect transistor Q4 provide drive signal for chopper power device, the drain electrode of field effect transistor Q3 is connected with power VCC, and the source is connected with chopper power device, the drain electrode of field effect transistor Q4 is connected with chopper power device, and the source is grounded.