Five stalls can control fan speed optical circuit

  
Fans (Ceiling) Fifth gear speed control circuit shown in Figure 3-6. It uses capacitor step-down, three-terminal fixed 7806 integrated steady voltage regulator Ai regulator to
Five stalls can control fan speed optical circuit - schematic

achieve fan speed control integrated circuit A2 through LC906 control Triac V conduction angle. Order press the button SB. A2 will be 4 feet by a block 1 block 2 block -3 -4 -5 stop a block off a one block. cycling issue a control signal, so that V conduction block smaller race, to achieve speed.




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